Mathworks SIGNAL PROCESSING BLOCKSET RELEASE NOTES

Signal Processing Blockset™ Release Notes

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Signal Processing Blockset™ Release Notes

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Summary by Version ............................... 1

Version 7.0 (R2010a) Signal Processing Blockset

Software

Version 6.10 (R2009b) Signal Processing Blockset

Software

Version 6.9 (R2009a) Signal Processing Blockset

Software

Version 6.8 (R2008b) Signal Processing Blockset

Software

Version 6.7 (R2008a) Signal Processing Blockset

Software

........................................ 4

........................................ 11

........................................ 21

........................................ 28

........................................ 32

Contents

Version 6.6 (R2007b) Signal Processing Blockset

Software

Version 6.5 (R2007a) Signal Processing Blockset

Software

Version 6.4 (R2006b) Signal Processing Blockset

Software

Version 6.3 (R2006a) Signal Processing Blockset

Software

Version 6.2 (R14SP3) Signal Processing Blockset

Software

Version 6.1 (R14SP2) Signal Processing Blockset

Software

........................................ 37

........................................ 43

........................................ 47

........................................ 51

........................................ 54

........................................ 56

iii

Version 6.0.1 (R14SP1) Signal Processing Blockset

Software

Version 6.0 (R14) SignalProcessingBlockset

Software

Compatibility S umm a ry for Signal Processing Blockset

Software

........................................ 65

........................................ 67

........................................ 78

iv Contents

SummarybyVersion

This table provides quick access to what’s new in each version. For clarification, see “Using Release Notes” on page 2.

Signal Processing Blockset™ Release Notes

Version (Release)

Latest Versi V7.0 (R2010a

V6.10 (R2009b)

V6.9 (R2009a)

V6.8 (R2

V6.7 (R2008a)

V6.6 (R2007b)

(R2007a)

V6.5

008b)

New Features and Changes

Yes

)

Details

Yes Details

Yes Detai

Yes Details

Vers ion Compatibilit Consideratio

Yes Summary

Yes

Summa

Yes Summary

Fixed Bugs

and Known

Problems

Bug Reports Includes fix

Bug Reports Includes fixes

Bug Repor Include

Bug Reports Includes fixes

Bug Re Inclu

Bug Reports Includes fixes

sfixes

ports

des fixes

Related Documentation at Web Site

Printable Release Notes: PDF

Current product documentation

V6.4 (R2006b)

V6.3 (R2006a)

.2 (R14SP3)

V6.1 (R14SP2)

Yes Details

Yes

ails

Det

Yes Details

Yes Summary

No Bug

No Bug Reports

Yes Summary

Bug Reports Includes fixes

Reports

ludes fixes

Inc

Includes fixes

Bug Reports Includes fixes

Signal Processing Blockset™ Release Notes

Version (Release)

V6.0.1 (R14SP1)

V6.0 (R14)

New Features and Changes

Yes Details

Vers ion Compatibility Considerations

Yes Summary

Fixed Bugs and Known Problems

Fixed bugs

Related Documentation at Web Site

Using Release Notes

Use release notes when upgrading to a newer version to learn about:

• New features

• Changes

• Potential impact on your existing files and practices

Review the release notes for other MathWorks™ products required for this product (for example, MATLAB bugs, or compatibility considerations in other products impact you.

If you are upgrading from a software version other than the m ost recent one, review the current release notes and all interim versions. For example, when you upg rade from V1.0 to V1.2, review the release notes for V1.1 and V1.2.

or Simulink®). Determine if enhancements,

What Is in the Release Notes

New Features and Changes

• New functionality

• Changes to existing functionality

Version Compatibility Con si derations

When a new feature or change introduces a reported incompatibility between versions, the Compatibility Considerations subsection explains the impact.

SummarybyVersion

Compatibility issues reported after the product release appear under Bug Reports at The MathWorks™ Web site. Bug fixes can sometimes result in incompatibilities, so review the fixed bugs in Bug Reports for any compatibility impact.

Fixed Bugs and Known P roblems

The MathWorks offers a user-searchable Bug Reports database so you can view Bug Reports. The development team updates this database at release time and as more information becomes available. Bug Reports include provisions for any known workarounds or file replacem ents. Information is available for bugs existing in or fixed in Release 14SP2 or later. Information is not avail able for all bugs in earlier release s.

Access Bug Reports using y our MathWorks Account.

Signal Processing Blockset™ Release Notes

Version 7.0 (R2010a) Signal Processing Blockset Software

This table summarizes what’s new in Version 7.0 (R2010a):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are:

• “New System Objects Provide Signal Processing Algorithms for use in

MATLAB” on page 5

• “New Time Scope B lock” on page 5

• “New UDP Send and UDP Receive Blocks” on pag e 6

• “Filtering Library Name Changes” on page 6

• “Ability to Use Some Filter D esigns Library Blocks Without a Filter Design

Toolbox License” on page 6

• “Data Type Assistant and Ability to Specify Design Minimums and

Maximums Added to More Fixed-Point Blocks” on page 8

• “Data Types Pane Replaces the Data Type Attributes and Fixed-Point

Panes on Fixed-Point Blocks” on page 8

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

Printable Release Notes: PDF

Current product documentation

• “Signal Processing Blockset Support for the For Each Subsystem” on page 8

• “Support for Variable-Size Signals Added to the Window Function Block”

on page 10

• “New Fixed-Point Parametric Audio Equalizer Demo” on page 10

• “Obsolete Blocks” on page 10

Version 7.0 (R2010a) Signal Processing Blockset™ Software

New System Objec Algorithms for u

System objects a modeling, and c These new obje providing the Signal Proces Simulink mode

re algorithms that provide stream processing, fixed-point

ode generation capabilities for use in MATLAB programs.

cts allow you to use signal processing algorithms in MATLAB,

same parameters, numerics and performance as corresponding

sing Blockset™ blocks. System objects can also be us ed in

ls via the Embedded MATLAB

New Time Scop

This releas Blockset Si floating-p

The new Tim the Simuli new and im

• Simulati

simulat

• Line Pro

display

e adds a new Time Scope block to the Signal Processing nks library. This new block enables you to visualize real-valued

oint and fixed-point signals in the time domain.

e Scope block offers a subset of the functionality provided by

nk Scope block, as well as some new and improved features. T he

proved features include:

on Control — You can start, stop, pause, and single-step model

ion directly from the Time Scope.

perty Editing — You can edit the line properties for signals

ed in the Tim e Scope.

se in MATLAB

eBlock

ts Provide Signal Processing

Function block.

• New Plo

zoomin

• Suppor

using

t N avigation Tool – Provides you with enhanced axes scaling and

g capabilities.

t for Frame-Based Signals — You can visualize frame-based signals

the new Time Scope block.

Compatibility Considerations

009b an d earlier relea ses, the Time Scope block in the Signal Processing

In R2

kset Sinks library was an implementation of the Simulink Scope block.

Bloc

rearenocompatibilityconsiderationsfor existing models. However, using

The

add_block command to put a Time Scope block from the Signal Processing

the

ckset Sinks library i nto your model, may result i n an incompatibility.

Blo

ou have any scripts that use

If y

u have two options:

add_block('dspsnks/Time Scope',...),

Signal Processing Blockset™ Release Notes

• To ensure the old behavior and continue to use the Simulink Scope block in

your models, change your

add_block('simulink/Sinks/Scope', ...)

• To use the new Signal Processing B lockset Time Scope block i n your models,

you can continue to use the command. However, because you cannot set the parameters of the Time Scope block from the command line, you may have to modify your code. If you previously configu red any block parameters w ithin the command, you must remove those property name/property value pairs from the command before proceeding.

New UDP Send and UDP Receive Blocks

This release adds a new UDP Send block to the Signal Processing Sinks library, and a new UDP Receive block to the Signal Processing Sources library. You can use these new blocks to send and receive U ser Datagram Protocol (UDP) messages in your Simulink model.

add_block command to the following:

add_block('dspsnks/Time Scope',...)

add_block

Filtering Library Name Changes

The following Filtering libraries have new names in the Sim ulink Help Browser in R2010a.

Library R2009b Library

Name

dspfdesign

dsparch4 Filter Designs Filter Im plem entations

Filter Design Toolbox Filter Designs

R2010a Library Name

Ability to Use Some Filter Designs Library Blocks Without a Filter Design Toolbox License

You can now edit the parameter settings of some blocks in the Filtering > Filter Designs library (previously, called the F ilter Design Toolbox library) without a Filter Design Toolbox™ license. As in previous releases, you do not need a Filter Design Toolbox license to run models that contain blocks from the Filter Designs library. With this change, the

Version 7.0 (R2010a) Signal Processing Blockset™ Software

blocks in the Filter Designs library now fall into two categories of licensing requirements:

• Blocks that allow you to edit some parameter settings without a Filter

Design Toolbox license. For full functionality, these blocks still require a Filter Design Toolbox license. This category consists of the following blocks:

- Arbitrary Response Filter

- Bandpass Filter

- Bandstop Filter

- Differentiator Filter

- Highpass Filter

- Hilbert Filter

- Lowpass Filter

- Pulse Shaping Filter

• Blocks that you can use only in their default configuration when you do

nothaveaFilterDesignToolboxlicense. Tochangeanyoftheparameter settings on these blocks, you must have a Filter Design Toolbox license. This category consists of the following blocks:

- CIC Compensator

- CIC Filter

- Comb Filter

- Halfb and Filter

- Inverse Sinc Filter

- Nyquist Filter

- Octave Filter

- Peak-Notch Filter

- Parametric Equalizer

Signal Processing Blockset™ Release Notes

Data Type Assistant and Ability to Specify Design Minimums and Maximums Added to More Fixed-Point Blocks

The following blocks now offer a Data Type A ssistant to help you specify fixed-point data types on the block mask. Additionall y, you can now enable simulation range checking for certain data types on these blocks. To do so, specify appropriate minimum and maximum values on the block dialog box. The b locks that support these features in R2010a are:

• DCT

• FFT

• IDCT

• IFFT

For more information on these features, see the following sections in the Simulink documentation:

• “Using the Data Type Assistant”

• “Checking Signal Ranges”

Data Types Pane Replaces the Data Type Attributes and Fixed-Point Panes on Fixed-Point Blocks

In previous releases, some fixed-point blocks had a Data type attributes pane, and others had a Fixed-point pane. The functionality of these panes remains the same, but the pane now appears as the Data Types pane on all fixed-point Signal Processing Blockset blocks.

Signal Processing Blockset Support for the For Each Subsystem

You can use the following Signal Processing Blockset blocks in the Simulink For Each subsystem:

• Array Vector Add

• Array Vector Multiply

• Array Vector Subtract

• Array Vector Divide

• Backward Substitution

• Create Diagonal Matrix

• Delay

• Delay Line

• Digital Filter

• Downsample

• Extract Diagonal

• FFT

• Flip

• Forward Substitution

• IFFT

Version 7.0 (R2010a) Signal Processing Blockset™ Software

• LDL Factorization

• LDL Solver

• Maximum

• Mean

• Minimum

• Normalization

• Offset

• Overwrite Values

• Pad

• RMS

• Scalar Quantizer Decoder

• Scalar Quantizer Encoder

• Sort

• Submatrix

Signal Processing Blockset™ Release Notes

• Standard Deviation

• Variance

• Vector Quantizer Decoder

• Vector Quantizer Encoder

Support for Variable-Size Signals Added to the Window Function Block

The Window Function block now supports variable-size signals. See “Working with Variable-Size Signals” in the Simulink documentation for more information.

New Fixed-Point Parametric Audio Equalizer Demo

This release adds a new demo, Using the Fixed-Point Advisor to Convert a Parametric Audio Equalizer to Fixed Point, to the Fixed Point category of Signal Processing Blockset demos. This demo shows you how to use the Fixed-Point Advisor to convert the existing Parametric Audio Equalizer demo to fixed point.

Obsolete Blocks

TheFromWaveFileandToWaveFileblocksarenowobsolete.

Compatibility Considerations

Replace Fro m Wave File blocks in your models with the From Multim edia File block.ReplaceToWaveFileblockswithaToMultimediaFileblock.

Version 6.10 (R2009b) Signal Processing Blockset™ Software

Version 6.10 (R2009b) Signal Processing Blockset Software

New Features and Changes

Yes Details below

This table summ

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are:

• ““What’s This?” Context-Sensitive Help Added for Signal Processing

Blockset Blocks” on page 12

• “Periodogram and Spectrum Scope Blocks Support Mean-Square Spectrum”

on page 12

• “Power Spectrum Estimation Blocks Compute PSD Like the Signal

Processing Toolbox Spectrum Objects” on page 13

• “Spectrum Scope Computes Both One-Sided and Two-Sided Spectra” on

page 14

• “New Data Type Assistant and Ability to Specify Design Minimums and

Maximums” on page 15

• “Variable Size Data Support” on page 17

arizes what’s new in Version 6.10 (R2009b):

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Enumerated Data Type Support” on page 18

• “New Pulse Shaping Filter Block” on page 18

• “To Audio Device Block Handles Sample-Based Signals Differently” on

page 19

• “Zero-Latency Filter Structure Removed from CIC Blocks” on page 19

• “Empty Initial Conditions Support Removed from Some Blocks” on page 19

Signal Processing Blockset™ Release Notes

“What’s This?” Context-Sensitive Help Added for Signal Processing Blockset Blocks

R2009b introduces context-sensitive help for most Signal Processing Blockset blocks. To find out if a block supports context-sensitive help, look for the

question mark icon ( you see this icon, you can get help on any parameter on the block mask by right-clicking on the parameter name.

) in the lower-left corner of the block dialog box. When

Periodogram and Spectrum Scope Blocks Support Mean-Square Spectrum

Previously, the Periodogram and Spectrum Scope blocks supported only Power Spectral Density (PSD) visualizations. Now, these blocks also support Mean-Square Spectrum (MSS) computations. The Spectrum Scope block also supports MSS visualizations. As opposed to the PSD, which measures power per unit of frequency, the MSS measures power at a specific frequency.

• To compute the mean-square spectrum using the Periodogram block, set

the M easurement parameter to

• To compute and visualize the mean-square spectrum using the Spectrum

Scope block, set the Spectrum units parameter to one of the following:

Mean-square spectrum.

- Watts

- dBW

- dBm

Compatibility Considerations

The changes in the Spectrum Scope block result in the following two compatibility considerations.

Inherit sample increment from input parameter renamed Inherit sample time from input. The Inherit sample increment from input

parameter of the Spectrum Scope block has been renamed Inherit sample time from input. The behavior of the parameter remains the same.

Version 6.10 (R2009b) Signal Processing Blockset™ Software

Tunability Status C hanged for Two Parameters. The Inherit sample time from input (previously Inherit sample increment from input)and Sample time of original time series parameters of the Spectrum Scope

block are no longer tunable during simulation. To change these parameters while you are working with a model, you must stop a running simulation, change the parameter, and then start the simulation again.

Power Spectrum Estimation Blocks Compute PSD Like the Signal Processing Toolbox Spectrum Objects

The behavior of the following blocks has changed so that they produce identical results to the Signal Processing Toolbox™

• Burg Method

• Covariance Method

• Modified Covariance Method

• Periodogram

spectrum objects:

• Yule-Walker Method

To produce correct results and align with the Signal Processing Toolbox

spectrum objects,theseblocksnowscaletheiroutputbythesampling

frequency, Fs. In addition to producing different results in R2009b, these five blocks have two new parameters:

• Inheritsampletimefrominput— When you select this check box, the

block inherits its sample time from the input signal

• Sample time of original time series —Specifythesampletimeof

the original time series. The default value of this parameter is 1. This parameter becomes visible only when you clear the Inherit sample time from input check box.

Compatibility Considerations

In releases before R2009b, the block did not scale the output by Fs. To produce correct results and give the same output as the Signal Processing Toolbox spectrum objects, these five blocks now divide the spectrum by Fs.

Signal Processing Blockset™ Release Notes

To produce the old behavior, place a Gain block in front of these blocks in your model to multiply the signal by

Spectrum Scope Computes Both One-Sided and Two-Sided Spectra

The Spectrum Scope block now computes one-sided ([0... Fs]) and two-sided ((-Fs/2...Fs/2]) spectra in the same way that the Signal Processing Toolbox spectrum objects do. A new Spectrum type parameter on the Scope Properties tab replaces the Frequency range parameter that was on the Axis Properties tab in previous releases. You can set the Spectrum type to compute and display either a

((-Fs/2...Fs/2])

Compatibility Considerations

The changes in the Spectrum Scope block result in the following compatibility considerations.

sqrt(Fs).

One-sided ([0...Fs/2]) or Two-sided

spectrum.

Spectrum Scope Output Now Scaled by Fs. To produce correct results and align with the Signal Processing Toolbox spectrum objects, the Spectrum Scope block now scales its output by Fs. Because of this change in scaling, the output of the Spectrum Scope block is different than in previous releases. To help you transition to this b ehavior, the block updates the Y-axis limits to provide the same view as previous releases. This update occurs the first time you run an R2009a or earlier model in R2009b. This update marks your model changed. Therefore, to preserve the updated Y-axis limits, save your model after running it in R2009b for t h e first time.

Version 6.10 (R2009b) Signal Processing Blockset™ Software

Spectrum type parameter replaces Frequency range parameter. In previous releases, the Spectrum Scope block computed two-sided spectra over the interval (0…Fs]. It displayed these spectrums over the interval specified by the Frequency range parameter. This release removes the Frequency range parameter from the Axis Properties tab and replaces it with a Spectrum type parameter on the Scope Properties tab. The Spectrum Scope block now computes and displays the spectrum over the interval specified by the Spectrum type parameter, either or Two-sided ((-Fs/2...Fs/2]). The blockset no longer supports the

[0...Fs] option for the Frequency range parameter. The following table

shows how values of the Frequency range parameter map to the new Spectrum type parameter.

One-sided ([0...Fs/2])

Frequency Range

[0...Fs/2] One-sided ([0...Fs/2])

[-Fs/2...Fs/2] Two-sided ((-Fs/2...Fs/2])

[0...Fs] Two-sided ((-Fs/2...Fs/2])

These changes mean that the one-sided spectrum for real signals in R2009b differs from the one-sided spectrum compute d by the R2009a Spectrum Scope block. Also, the Spectrum Scope block no longer supports one-sided spectrums for complex inputs. To view the spectrum of a complex input in R2009b, set the Spectrum type parameter to

Y-axis scaling Parameter Removed. This release removes the Y-axis scaling parameter from the Axis Properties tab. You now set the Y-axis

units using the the block mask.

Frequency units Parameter Removed. This release also removes the Frequency units parameter from the Axis Properties tab. The units of the frequency axis are now always expressed in Hertz.

Spectrum units parameter on the Scope Properties tab of

Spectrum Type

Two-sided ((-Fs/2...Fs/2]).

New Data Type Assistant and Ability to Specify Design Minimums and Maximums

Effective in R2009b, a new Data type attributes pane replaces the Fixed-point pane of the following blocks:

Signal Processing Blockset™ Release Notes

• Array-Vector Add

• Array-Vector Divide

• Array-Vector Multiply

• Array-Vector Subtract

• Autocorrelation

• Backward Substitution

• Convolution

• Correlation

• Cumulative Product

• Cumulative Sum

• Difference

• Forward Substitution

• Levinson-Durbin

• Matrix 1-Norm

• Matrix Product

• Maximum

• Mean

• Median

• Minimum

• Normalization

• Sort

The Data type attributes pane provides you with th e following new features:

• A Data Type Assistant to help you specify data types on the block mask.

See “Using the Data Type Assistant” in the Simulink documentation for more information.

• The ability to enable simulation range checking and automatic fixed-point

scaling using minimum and maximum output values. You can specify

Version 6.10 (R2009b) Signal Processing Blockset™ Software

minimums and maximums for some data types based on design criteria. See “Checking Signal Ranges” in the Simulink documentation for more information.

Variable Size Data Support

Limited support for variable size data is now available. The following blocks support variable size data as of this release:

• Array-Vector Add

• Array-Vector Divide

• Array-Vector Multiply

• Array-Vector Subtract

• Difference

• FFT

• IFFT

• Inherit Complexity

• Matrix Product

• Matrix Sum

• Maximum

• Mean

• Minimum

• Normalization

• RMS

• Standard Deviation

• To Audio Device

• Variance

See “Working with Variable-Size Signals” for more information about variable size data.

Signal Processing Blockset™ Release Notes

Enumerated Data

Limited support blocks support e

• Check Signal At

• Constant

• Convert 2–D to

• Data Type Con

• Display

• Event-Coun

• Flip

• Frame Conv

• Matrix Con

• Multipor

• Permute M

• Selecto

• Signal T

• Submat

for enumerated data types is now available. The following

numerated data types as of this release:

tributes

1–D

version

tComparator

ersion

catenate

t Selector

atrix

oWorkspace

rix

Type Support

• Time Sc

• Trigge

• Varia

See “U

rmation about enumerated data types.

info

New P

The

ck. See the block reference page for more information.

blo

ope

red To Workspace

ble Selector

sing Enumerated Data” in the Simulink documentation for more

ulse Shaping Filter Block

Filter Design Toolbox library now includes the Pulse Shaping Filter

Version 6.10 (R2009b) Signal Processing Blockset™ Software

To Audio Device B

lock Handles Sample-Bas ed Signals

Differently

In previous rele sample-based s the block has c sample-based

Compatibility Considerations

This change i sample-base in R2009b, t in past rele

Zero-Late

ases, the To Audio Device block treated each sample of

ignals as a separate signal. In R2009b, the behavior of

hanged such that it treats each column of both frame and

inputs as separate channels.

n behavior results in a backward inc om p a tib ility for d signals with a length greater than 1. For such input signals he To Audio Device Block produces different results than it did

ases.

ncy Filter Structure Removed from CIC

Blocks

The Zero- are no lon

Filter st

block ma the Filt

latency decimator

ger available. These options were previously available from the ructure parameter on the CIC Decimation and CIC Interpolation sks. Because each block now only implements one filter structure,

er structure parameter has also been removed.

Compatibility Considerations

Before

slupda

where

running a previously existing model that uses these modes, run the

function. After you do, the block now produces N extra latencies,

N is the number of filter sections.

and Zer o-la tency interpolator selections

Empty Some

The f

• Buf

• Del

• FIR

• FI

Initial Conditions Support Removed from

Blocks

ollowing blocks no longer support empty (

fer

ay Line

Decimation

RInterpolation

[]) initial conditions:

Signal Processing Blockset™ Release Notes

• Integer Delay (Obsolete)

• Unbuffer

Compatibility Considerations

Provide the initial conditions parameter on these blocks with a nonempty value.

Version 6.9 (R2009a) Signal Processing Blockset™ Software

Version 6.9 (R2009a) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.9 (R2009a):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are:

• “Zoom Capability for Spectrum Scope and Vector Scope Blocks” on page 21

• “Run-Time Library Removal” on page 24

• “Variable Fractional Delay Block E nhancements” on page 24

• “Biquad Filter Block Allows Coefficients from Port” on page 25

• “Rounding Modes” on page 25

• “Unsigned Data Type Support” on page 25

• “New Parametric Audio Equalizer Demo” on page 26

• “R12 Filtering Blocks Functionality Changed” on page 26

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

Zoom Capability for Spectrum Scope and Vector Scope Blocks

Zoom capability has been added to Spectrum Scope and Vector Scope blocks. The zoom feature allows you to

• Zoom in

• Zoom in on the x-axis only

• Zoom in on the y-axis only

• Zoom out

• Restore the original view

• Save your axes settings

Signal Processing Blockset™ Release Notes

Compatibility Considerations

The incompatibilities in the f ol lowing sections were introduced with this change.

Autoscaling. When you autoscaled the y-axis of the Vector Scope or Spectrum Scope window in previous releases, the Minimum Y-limit and Maximum Y-limit block parameters updated to reflect the limits set by the autoscaling operation. This functionality is now removed. The y-axis in the scope window is still autoscaled, but the Minimum Y-limit and Maximum Y-limit block parameters do not update with the new y-axis limits. If you want to save your axes settings after autoscaling the y-axis, use the new Save Axes Settings menu item. This feature saves both the x-andy-axis limits of your current scope window.

Parameter Names. The parameter names listed in the following table have been changed.

Block Mode Old Parameter

Name

Spectrum

–

Display DC as

Scope

–

Amplitude scaling

When Frequency display units is

User-defined

When Frequency display units is

User-defined

Minimum X-limit

Maximum X-limit

New Parameter Name

Frequency display offset

Y-axis scaling

Minimum frequency

Maximum frequency

Version 6.9 (R2009a) Signal Processing Blockset™ Software

Block Mode Old Parameter

Name

Vector Scope

Units. In previous releases, the units used by some parameters of the Spectrum Scope and Vector Scope blocks were determined by the units used to scale the x-axis of the scope window. This behavior caused inconvenience because it required you to look at the scope window to determine the units on the x-axis before you could determine what units the block parameter was using.

In R2009a, this behavior has been changed such that you can now determine the units used by these parameters without looking at the x-axis of the scop e window.

–

When Input domain is

Frequency and

Frequency display units is

When Input domain is

Frequency display units is

User-defined

Frequency and

User-defined

Amplitude scaling

Minimum X-limit

Maximum X-limit

New Parameter Name

Y-axis scaling

Minimum frequency

Maximum frequency

In the frequency domain, the following parame t ers now use t h e units specified by the Frequency units parameter (

• Spectrum Scope block

Hertz or rad/sec):

- Frequency display offset (formerly Display DC as)

- Minimum frequency (formerly Minimum X-limit)

- Maximum frequency (formerly Maximum X-limit)

• Vector Scope block

- Minimum frequency (formerly Minimum X-limit)

- Maximum frequency (formerly Maximum X-limit)

Signal Processing Blockset™ Release Notes

In the time domain, seconds are now used as units for the following parameters:

• Vector Scope block

- Minimum X-limit (s)

- Maximum X-limit (s)

Run-Time Library Removal

The Real-Time Workshop®software pack-and-go utility enables code portability. In previous releases, the Signal Processing Blockset softw are pack-and-go .zip file included more files than necessary because the code depended on a run-time library that shipped with the product. In addition, you could not examine the contents of Signal Processing Blockset run-time functions from the Real-Time Workshop HTML report, because the code was accessed through the previously built l ibrary. In R2009a, this dependence on therun-timelibraryforcodegenerationisremoved.Thepack-and-go.zipfile is now much smaller than in previous releases, and the Real-Time Workshop HTML report provides links to the source code of the run-time functions.

Variable Fractional Delay Block Enhancements

Enhancements to the Variable Fractional Delay block include the following:

• A

Farrow interpolation mode has been added.

• Fixed-point support has been added. You can set the fixed-point parameters

on the Fixed-point pane.

• AnewDisable direct feedthrough by increasing minimum possible

delay by one check b ox allows you to use the block in feedback loops.

• AnewFor small input delays parameter is available when the block is in

FIR or Farrow interpolation mode. This parameter a llow s you to spec ify

the block’s behavior for small input delay values.

• AnewValid delay range area on the block mask displays the possible

range o f valid delay values based on the settings of the block parameters. All input delay values less than D

min

and D

, respectively.

max

or greater than D

min

are clipped to

max

Version 6.9 (R2009a) Signal Processing Blockset™ Software

Compatibility Considerations

The Fractional Delay Filter block from the Filtering > Filter Design Toolbox library has been removed from the product. Any of your existing

models that use this block will continue to work. If you encounter any problems using the Fractional Delay Filter block or would like added functionality, replace the Fractional Delay Filter blocks in your models with Variable Fractional Delay blocks from the Signal Operations library.

Biquad Filter Block Allows Coefficients from Port

The Biquad Filter block has a new selection in the Coefficients source area that allows you to enter filter coefficients via coefficients into the block via such ports allows you to tune the coefficients in your generated code.

Input port(s).Bringing

Rounding Modes

The following rounding modes have been added to blocks that support fixed-point signals:

•

Convergent — Rounds the result of a calculation to the closest

representablenumber. Inthecaseofatie, nearest even number. This rounding mode is the least biased method provided by the blockset.

•

Round — Rounds the result of a calculation to the closest representable

number. Inthecaseofatie, representable number in the direction of positive infinity, and it rounds negative numbers to the closest representable number in the direction of negative infinity.

•

Simplest — Rounds the result of a calculation using the rounding mode

(

Floor or Zero) that adds the least amount of extra rounding code to your

generated code. For more information, see “R ounding Mode: Simplest” in the Simulink

Fixed Point™ documentation.

Round rounds positive numbers to the closest

Convergent rounds to the

Unsigned Data Type Support

Unsigned integer and fixed-point support has been added to the following blocks:

Signal Processing Blockset™ Release Notes

• Autocorrelation

• Convolution

• Correlation

• Matrix-1 Norm

• Normalization

New Parametric Audio Equalizer Demo

This rele as e adds a Parametric Audio Equalizer dem o to the Audio Processing library. The demo highlights a workflow for designing filters using a custom GUI a n d algorithmic code generation. Open this demo by typing

R12 Filtering Blocks Functionality Changed

The following blocks that appeared in the dspobslib library in R2008b have been changed or removed:

• Biquadratic Filter (Obsolete) — Removed. Any Biquadratic Fi lter blocks

that you are using in your models will be automatically upgraded to use the Biquad Filter block.

dspparameq.

• Direct Form II Transpos e F ilter (Obsolete) — Updated to use an

implementation of the Digital Filter block.

• Time-Varying Direct-Form II Transpose Filter (Obsolete) — Updated to

use an implementation of the Digital Filter block.

• Time-Varying Lattice Filter (Obsolete) — Updated to use an

implementation of the Digital Filter block.

Compatibility Considerations

You might need to consider the following compatibility issues for you r existing models that use these blocks:

• Empty (

• The Time-Varying Direct-Form II Transpose Filter block no longer supports

non-normalized IIR filters.

[]) initial conditions are no longer supported for these blocks.

Version 6.9 (R2009a) Signal Processing Blockset™ Software

• The Time-Varying Direct-Form II Transpose Filter block no longer supports

coefficients of mixed complexity on the coefficients input port.

Signal Processing Blockset™ Release Notes

Version 6.8 (R2008b) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.8 (R2008b):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are

• “Code Generation Support for Signals Up to 128 Bits” on page 28

• “New Biquad Filter B lock” on page 29

• “Increased N-Dimensional Support” on page 29

• “New Data Type Support Table” on page 29

• “Rectangular ROI Support for Minimum and Maximum Blocks” on page 29

• “Autocorrelation Block Provides Additional Fixed-Point Support” on page

• “QR Factorization Block SupportsFull-SizedOutputs”onpage30

• “Counter Block Enhancements” on page 30

• “FFT Block Correctly Applies Divide-By-Two on Butterfly Outputs” on

page 31

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Matrix Sum Block Is Now the Simulink Sum Block” on page 31

Code Generation Support for Signals Up to 128 Bits

Signal Processing Blockset softw are now supports C code generation and the Simulink Accelerator and Rapid Accelerator modes for fixed-point and integer word lengths up to 128 bits. This enhancement enables you to generate code for anything you can simulate using Signal Processing Blockset blocks. The only exception is the Sort block, which only supports code generation up to 32 bits for fixed-point and integer s ignals.

Version 6.8 (R2008b) Signal Processing Blockset™ Software

New Biquad Filte

A new Biquad Filt Filtering / Filt filters with op

Increased N-D

The following

• Downsample

• DCT

• FFT

• IDCT

• IFFT

• Window Fun

New Data T

You can n through data typ Blockse

Blocks

also ty to brin

ow access the Signal Processing B lockset Data Type Support Table

the Simulink model Help menu. The table provides information about

e support and code generation coverage for all Signal Processing t blocks. Select Help > Block Support Table > Signal Processing et or Help > Block Support Table > All Tables. As always, you can

showsignalblockdatatypetable at the MATLAB command line

gupthetable.

er block has been added to the Signal Processing Blockset

er Designs library. This block allows you to implement IIR

timized numerics.

imensional Support

blocks now support N-D signals:

ction

ype Support Table

rBlock

Recta Block

The M inte

ngular ROI Support for Minimum and Maximum s

inimum and Maximum blocks now support Rectangular ROI (region of

rest). See the block reference pages for more information.

Signal Processing Blockset™ Release Notes

Autocorrelatio

n Block Provides Additional

Fixed-Point Sup

The Autocorrela previous relea fixed-point i

QR Factorizat

The QR Factor R.Inpreviou release adds or Full outp

Counter Bl

This relea

• The forme

Dec when t

• The Inc/D

integer

• AnewMax

an input

tion block now supports the scaling of fixed-point signals. In

ses, the block’s Scaling parameter had to be set to

nputs. See the block reference page for more information.

ion Block Supports Full-Sized Outputs

ization block now supports full-sized output matrices Q and

s releases, the block only produced economy-sized outputs. This

the Output size parameter to enable you to select either

uts. Refer to the block reference page for more information.

ock Enhancements

se brings the following enhancements to the Counter block:

r Clk port label is now Inc when the block is counting up, and

he block is counting down.

ec port now supports 8-, 16-, and 32-bit signed and unsigned

and fixed-point data types.

port was added to enable you to control the Counter size via

port.

port

None for

Economy

• The Hit

• Anewch

• Anewc

by th

values parameter now accepts vectors as well as scalar values.

eck is in place to require that the Hit values are integers.

heckisinplacetorequireMaximum count to be an integer.

heckisinplacetorequireMaximum count to be representable

e Count data type.

Compatibility Considerations

use of the new checking on the Maximum count and Hit values

Beca

ameters, your models might produce new errors. Change these signals to

par

a types supported by each parameter.

dat

Version 6.8 (R2008b) Signal Processing Blockset™ Software

FFT Block Correc Butterfly Outpu

The Skip divide- check box on the to the Main pan check box now c In releases pr floating-poi

Fixed-point pane of the FFT block dialog has been moved

e and renamed Divide butterfly outputs by two.This

orrectly applies to both fix ed -point and floating-point inputs.

ior to R2008b, the block always ignored this check box for

nt inputs.

tly Applies Divide-By-Two on

by-two on butterfly outputs for fixed-point signals

Compatibility Considerations

The FFT bloc differentl

• The block i

• The Divide

divide-by on the Fix

• The Loggi

not set t

Make sur block re

k can give results in R2008b and later releases that are scaled

y than in previous releases when all the following conditions are met:

nput is floating point.

butterfly outputs by two check box is selected (or the Skip

-two on butterfly outputs for fixed-point signals check box ed-point pane was NOT selected, for releases prior to R2008b) .

ng mode parameter on the Fixed-Point Tool for the model is

Minimums, maximums and ove rflows.

e that this check box is set correctly for your needs. Refer to the

ference page for more information.

Matrix

The Ma diffe

Sum Block Is Now the Simulink Sum Block

trix Sum block is now identical to the Simulink Sum block, with

rent defaults selected.

Compatibility Considerations

existing models that contain the old version of the Matrix Sum block will

Your

inue to work in this release, however, the old version of the block will be

cont

ved from the product in a future release. You should use the

remo

ction to replace Matrix Sum blocks in your models with the new version.

fun

might get slightly different results using the new version of the block

You

Inherit via internal rule is used.

whe

slupdate

Signal Processing Blockset™ Release Notes

Version 6.7 (R2008a) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.7 (R2008a):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are

• “Increased N-Dimensional Support” on page 32

• “Parameter Data Types Upgrade” on page 33

• “From Audio Device and To Audio Device Blocks Generate Code on More

Platforms” on page 33

• “FIR Interpolation Block Improved for Frame-Based Signals” on page 33

• “Delay Line Block Allows Selective Enabling o f Output” on page 34

• “Increased Scaled Doubles Support” on page 34

• “Spectrum Scope Allows Relabeling of X-Axis Scale” on page 34

• “Levinson-Durbin Block Coefficients Can Have Different Word Lengths”

on page 34

• “Reference Port Added to Frame Conversion Block” on page 34

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Tunability Status Changed for Stack and Queue Blocks” on page 34

• “DSP Constant Block Removed in Favor of Constant Block” on page 35

• “Matrix Concatenation Block Renamed to Matrix Concatenate” on page 35

• “New and Updated D emos” on page 35

• “Obsolete Blocks” on page 36

Increased N-Dimensional Support

The following blocks now support N-D signals:

Version 6.7 (R2008a) Signal Processing Blockset™ Software

• Autocorrelation

• Convolution

• Correlation

• Delay

• Histogram

• Mean

• Median

• RMS

• Standard Deviation

• Variable Fractional Delay

• Variable Integer Delay

• Variance

Parameter Data Types Upgrade

Edit boxes on all Signal Processing Blockset blocks now support all built-in MATLAB data types except

char and Boolean.

From Audio Device and To Audio Device Blocks Generate Code on More Platforms

The From Audio Device and To Audio Device blocks can now generate code on any platform supported by MATLAB except Solaris™ platforms.

FIR Interpolation Block Improved for Frame-Based Signals

The FIR Interpolation block now uses less memory and is more efficient for frame-based sig nals when the Framing parameter is set to

frame rate

Maintain input

Signal Processing Blockset™ Release Notes

Delay Line Block Allows Selective Enabling of Output

The Delay Line block now supports selective enabling of the block output for increased efficiency when you select the Show En_Out port for selectively enabling output parameter. This allows the block to be more efficient in applications for which the block output does not always need to be valid.

Increased Scaled Doubles Support

The following blocks now support the scaled doubles data type:

• Discrete Impulse

• Identity Matrix

• Sine Wave

• Window Function

Spectrum Scope Allows Relabeling of X-Ax is Scale

TheAxisPropertiespaneoftheSpectrumScopeblocknowhastheDisplay DC as parameter. This parameter allows you to specify a new label for the

DC frequency (0 Hz) along the x-axis of your scope, which is desirable in modulated carrier applications.

Levinson-Durbin Block Coefficients Can Have Different Word Lengths

The polynomial coeffi c ients (A) and reflection coefficients (K) of the Levinson-Durbin block are no longer constrained to have the same word length.

Reference Port Added to Frame Conversion Block

The Frame Conversion block now has a Ref port that allows you to inherit the output sampling mode from an input signal.

Tunability Status Changed for Stack and Queue Blocks

The parameters of the Stack and Queue blocks are no longer tunable.

Version 6.7 (R2008a) Signal Processing Blockset™ Software

Compatibility Considerations

All parameters of the Stack and Queue blocks that were previously tunable during simulation are no longer tunable. To change these parameters while you are working with a model, you must stop a running simulation, change the parameter, and then start the simulation again.

DSP Constant Block Removed in Favor of Constant Block

The DSP Constant block has been removed. Use the Simulink Constant block instead.

Compatibility Considerations

Use slupdate to replace DSP Constant blocks with Simulink Constant blocks in your models.

Matrix Concatenation Block Renamed to Matrix Concatenate

The Matrix Concatenation block has been renamed Matrix Concatenate. The functionality of this block has not changed.

New and Updated Demos

The following demos are new in this release. Enter the commands provided to open each demo from the MATLAB command line:

• Synthetic Aperture Radar —

• Positional Audio — dspAudioPos

• Audio Special Effects — dspaudioe ffects

The following demos are updated in this release:

• Internet Low Bitrate Codec (iLBC) for VoIP —

• Pitch Shifting and Time Dilation Using a Phase Vocoder — dsppitchtime

• Radar Tracking — aero_radmod_dsp

SarImageFormation

dspilbc

Signal Processing Blockset™ Release Notes

• WWV Digital Receiver — dspwwv

Obsolete Blocks

The Kalman Adaptive Filter and Triggered Delay Line blocks are now obsolete.

Compatibility Considerations

Replace Kalm a n Adaptive Filter blocks in your models with th e Kalman Filter block. Replace Triggered Delay Line blocks with a Delay Line block inside a Triggered Subsystem.

Version 6.6 (R2007b) Signal Processing Blockset™ Software

Version 6.6 (R2007b) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.6 (R2007b):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are

• “New To Audio Device and From Audio Device Blocks” on page 37

• “New Array-Vector Math Blocks” on page 38

• “New CIC Filter Block” on page 38

• “FFT and IFFT Blocks Are More Op timized for Fixed-Point Signals” on

page 38

• “Rounding Modes C eiling and Zero Added to F ixed-Point Blocks” on page 3 9

• “Increased N-Dimensional Support” on page 39

• “Increased Scaled Doubles Support” on page 39

• “Increased Multichannel Support” on page 40

• “DirectX Co m po n ent Registration Limitations Removed from To

Multimedia File and From Multimedia File Blocks” on page 40

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Tunability Status Changed for Some Block Parameters” on page 40

• “Levinson-Durbin Block N ow Treats Frame-Based Row Vectors Differently”

on page 42

New To Audio Device and From Audio Device Blocks

The From Audio Device and To Audio Device blocks have been added to the Signal Processing Sources and Signal Processing Sinks libraries, respectively. These blocks offer support for more than two audio channels and for Windows for more information.

,Macintosh®,andLinux®platforms. See the block reference pag es

Signal Processing Blockset™ Release Notes

Compatibility Considerations

TheseblocksreplacetheToWaveDeviceandFromWaveDeviceblocks, which are obsolete as of this release, and might be completely removed from the product in a future release. Replace To Wave Device and From Wave Device blocks in your models with the new To Audio Device and From Audio Device blocks.

New Array-Vector Math Blocks

The following new array-vector math blocks perform arithmetic operations along a specified dimension of an N-dimensional array:

• Array-Vector Add

• Array-Vector Divide

• Array-Vector Multiply

• Array-Vector Subtract

See the block reference pages for more information.

Note The Array-Vector Multiply block replaces the Matrix Scaling block, which is removed from the product as of this release. Matrix Scaling blocks in your existing models will be automatically replaced with Array-Vector Multiply blocks.

New CIC Filter Block

The CIC Filter block has been added to the Filter Design Toolbox library. See the block reference page for more information.

FFT and IFFT Blocks Are More Optimized for Fixed-Point Signals

The double-signal and half-length optimizations that the FFT and IFFT blocks used to apply only to floating-point signals now also apply to fixed-point signals. See “Algorithms Used for FFT Computation” and “Algorithms Used

Version 6.6 (R2007b) Signal Processing Blockset™ Software

for IFFT Computation” in the respective block reference pages for more information.

Rounding Modes Ceiling and Zero Added to Fixed-Point Blocks

The Rounding Mode parameter of each fixed-point-capable block has two new rounding modes:

•

Ceiling rounds the result of a calculation to the closest representable

number in the direction of positive infinity.

•

Zero rounds the result of a calculation to the closest representable number

in the direction of zero.

Increased N-Dimensional Support

The following blocks now have support for N-D signals:

• Array-Vector Add

• Array-Vector Divide

• Array-Vector Multiply

• Array-Vector Subtract

• Constant Ramp

• Difference

• Inherit Complexity

• Maximum

• Minimum

Increased Scaled Doubles Support

The following blocks now support the scaled doubles data type:

• Difference

• Normalization

• Matrix Product

Signal Processing Blockset™ Release Notes

• Matrix Sum

Increased Multichannel Support

The following blocks now support multichannel signals:

• LPC to LSF/LSP Conversion

• LPC to/from Cepstral Coefficients

• LPC to/from RC

• LPC/RC to Autocorrelation

DirectX Component Registration Limitations Removed from To Multimedia File and From Multimedia File Blocks

YouarenowabletousetheFromMultimediaFileorToMultimediaFile blocks without first having someone with system administrator privileges register the DirectX Windows machine.

components associated with these blocks on your

Tunability Status Changed for Some Block Parameters

The tunability status for the block parameters in the following table has been changed. This was done to maintain consistency of the tunability status for any given parameter across all simulation and code generation modes.

Block

Chirp

Digital Filter

Parameter

Frequency sweep

Initial frequency

Target frequency

SOS matrix Simulation only Always

Scale values Simulation only Always

Old Tunability Status

Simulation only

Simulation only Always

New Tunability Status

Never

Version 6.6 (R2007b) Signal Processing Blockset™ Software

Block

Extract

Parameter

Extract

Triangular Matrix

Histogram Normalized

Multiphase Clock

Starting ph ase Always

Number of phase intervals over which clock is active

Active level Always

Normalization

Norm

Normalization bias

Sine Wave

Frequency

Old Tunability Status

Simulation only

New Tunability Status

Never

Simulation only

Never

Simulation only

Never

Simulation only Always

In some modes

Always when

Sample mode

Continuous or

Computation method is

Trigonometric fcn

Phase offset

In some modes

Always when

Sample mode

Continuous or

Computation method is

Trigonometric fcn

Sort Sort order Simulation only

Never

Compatibility Considerations

Due to these changes, some parameters that were previously tunable during simulation are no longer tunable. To change these parameters while you are

Signal Processing Blockset™ Release Notes

working with a model, you now have to stop a running simulation, change the parameter, and then start the simulation again.

Levinson-Durbin Block Now Treats Frame-Based Row Vectors Differently

The Levinson-Durbin block now treats a 1-by-N frame-based row vector on its input port as N channels with one sample each. Previously, the Levinson-Durbin block treated such an input as one channel with N samples. This change makes the Levinson-Durbin block consistent with the way most Signal Proces sing Blockset blocks treat frame-based row vectors.

Be aware that the block now errors for a 1-by-N frame-based row vector input when reflection coefficients (K) are output, since the block is required to have at least 2 samples per inp u t channel to calculate K.

Compatibility Considerations

To get the old behavior in an existing model, you can introduce a Frame Conversion block before a Levinson-Durbin block in your model to convert the block input to a sample-based signal.

Version 6.5 (R2007a) Signal Processing Blockset™ Software

Version 6.5 (R2007a) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.5 (R2007a):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are

• “R11.1 Blocks Have Been Removed in R2007a — Run Helper Script Before

Upgrading” on page 43

• “New Kalman Filter Block” on page 44

• “Increased Unsigned Integer and Fixed-Point Support” on page 44

• “Increased N-Dimensional Support” on page 44

• “X-Axis Control Added to Spectrum Scope and Vector Scope Blocks” on

page 45

• “New Filter Design Toolbox Library Blocks” on page 45

• “Fixed-Point Support and Tunability Added to Filter Design Toolbox

Library Blocks” on page 45

• “New FFT Length Parameters on FFT and IFFT Blocks” on page 45

• “Zero Pad Block Removed” on page 46

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Pad Block Can Truncate Either End of an Input Signal” on page 46

• “New and Updated D emos” on page 46

R11.1 Blocks Have B een Removed in R2007a — Run Helper Script Before Upgrading

The R11.1 DSP Blockset blocks have been deprecated since R14SP2. These blocks have been completely removed from the Signal Processing Blockset product in R2007a.

Signal Processing Blockset™ Release Notes

Compatibility Considerations

We are providing a script and documentation to help you remove any R11.1 DSP Blockset blocks from your models and replace them with current Signal Processing Blockset blocks. You must run this script before upgrading to R2007a. Refer to our MATLAB Central submission titled “Tool for Removing R11 DSP Blockset Blocks from Models” on the Web to download the script and its associated documentation.

New Kalman Filter Block

The Kalman Filter block has been added to the Filtering > Adaptive Filters library. This block predicts or estimates the state of a dynamic system from a series of incomplete or noisy measurements. See the block reference page for more information.

Increased Unsigned Integer and Fixed-Point Support

Unsigned integer and fixed-point data type support has been added to the following blocks:

• Cumulative Product

• Cumulative Sum

• Difference

• FIR Decimation

• FIR Interpolation

• FIR Rate Conversion

Increased N-Dimensional Support

Support for N-D signals has been added to the following blocks:

• dB Conversion

• dB Gain

• Check Signal Attributes

• Frame Conversion

• Normalization

Version 6.5 (R2007a) Signal Processing Blockset™ Software

• Pad

X-Axis Control Added to Spectrum Scope and Vector Scope Blocks

More x-axis control has been added to the Spectrum Scope and Vector Scope blocks:

• You can now specify the range of the x-axis for the Spectrum Scope and

Vector Scope blocks.

• You can now specify an x-offset for the Vector Scope block.

See the block reference pages for more information.

New Filter Design Toolbox Library Blocks

The follo wing blocks have been added to the Filter Design Toolbox library:

• Arbitrary Magnitude Filter

• Octave Filter

• Parametric Equalizer

• Peak-Notch Filter

See the block reference pages for more information.

Fixed-Point Support and Tunability Added to Filter Design Toolbox Library Blocks

The blocks in the Filter Design Toolbox library now support fixed-point and integer data types on their input and output ports. In addition, parameters of these blocks that do not change filter order or structure are now tunable.

New FFT Length Parameters on FFT and IFFT Blocks

The Inherit FFT length from input dimensions and FFT length parameters have been added to the FFT and IFFT blocks. See the block reference pages for more information.

Signal Processing Blockset™ Release Notes

Zero Pad Block Re

The Zero Pad bloc product.

k has been removed from the Signal Processing Blockset

moved

Compatibility Considerations

You can use the replicate the existing mod value parame

Pad Block Ca

You can use t that is sho releases, always tru

the block ignored the value of the Pad signal at parameter and

Pad block with the Pad value parameter set to

functionality of the Zero Pad block. Any Zero Pad blocks in

els w ill be automatically replaced by Pad blocks with the Pad

ter set to

0. Your models will continue to work correctly.

nTruncateEitherEndofanInputSignal

he Pad block to truncate a signal by specifying an output length

rter than the input length in a given dimension. In previous

ncated the end of a signal.

Compatibility Considerations

The Pad bl well as f or both. paramet the inp

ock now obeys the Pad signal at parameter for truncation as

or padding, enabling you to truncate a signal at its beginning, end,

To get the previous behavior, make sure that the Pad signal at

er is set to

ut signal.

End for any Pad blocks in your model that are truncating

0 to exactly

New and

The Vo This d alter segm Open

The I has dat

rbis Decoder demo has been added totheAudioProcessinglibrary.

emo implements the Vorbis decoder, which is a freeware, open-source

native to the MP3 standard. This audio decoding standard supports the

entation of encoded data into small packets for network transmission.

this demo by typing

nternet Low Bit-Rate Codec (iLBC) demo in the Audio Processing library

been improved. This demo now supports single-precision floating-point

a, and both builds and runs faster. Open this demo by typing

Updated Demos

dspvorbisdec.

dspilbc.

Version 6.4 (R2006b) Signal Processing Blockset™ Software

Version 6.4 (R2006b) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.4 (R2006b):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes Summary

New features and changes introduced in this version are

• “R11.1 Blocks Will Be Removed in R2007a” on page 47

• “New Filter Design Toolbox Block Library ” on page 48

• “More Blocks with Fixed-Point Support” on page 48

• “From Multimedia File Block Supports Uncompressed AVI Files on UNIX”

on page 49

• “To Wave File and From Wave File Blocks Extended to Support More than

Two Channels” on page 49

• “Enabled Subsystem Support for From Wave File Block” on page 49

• “Diagnostic Output Port Added to Report a Failure to Converge” on page 49

• “2-D Support Added” on page 50

• “Multichannel Support Added” on page 50

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

• “Blocks Removed from Pro duct” on page 50

R11.1 Blocks Will Be Removed in R2007a

The R11.1 S ignal Processing Blockset blocks have been deprecated since R14SP2. In the next release, R2007a, these blocks will be completely remove d from the product.

Signal Processing Blockset™ Release Notes

Compatibility Considerations

We strongly recommend that you replac e any R11.1 blocks that you are using in your models at this time. For more information, refer to “Obsolete Blocks” on page 57.

New Filter Design Toolbox Block Library

A new Filter Design Toolbox block library has been added for the design and implementation of single- and multirate FIR and IIR filters. The library contains the following blocks:

• Bandpass Filter

• Bandstop Filter

• CIC Compensator

• Differentiator Filter

• Fractional Delay Filter

• Halfban d Filte r

• Highpass Filter

• Hilbert Filter

• Inverse Sinc Filter

• Lowpass Filter

• Nyquist Filter

More Blocks with Fixed-Point Support

Support for fixed-point data types has been added to the following blocks:

• Backward Substitution

• Forward Substitution

• LDL Factorization

• LU Factorization

Version 6.4 (R2006b) Signal Processing Blockset™ Software

From Multimedia AVI Fil e s o n U N I X

The From Multime

UNIX to import mult platforms.

platform

To Wave File a Support More

TheToWaveF support an a stereo.

Enabled Su

The From Wa

Diagnost to Conve

Anewdia afailur

gnostic output port has been added to t he following blocks to report

etoconverge:

dia File block now supports uncompressed AVI files on

s. As a result, you no longer need to use separate blocks

imedia files if you are working on both Windows and UNIX

nd From Wave File Blocks Extended to than Two Channels

ile (Obsolete) a nd From Wave File (Obsolete) blocks now

rbitrary number of audio channels, instead of just mono and

bsystem Suppor t for From Wave File Block

ve File (Obsolete) block now supports enabled subsystems.

ic Output Port Added to Report a Failure rge

File Block Supports Uncompressed

• Pseudo

• Singul

• SVD So

To mak the b

inverse

ar Value D ecomposition

lver

e t his port appear, select the Show error status port check box on

lock dialog.

Compatibility Considerations

rior releases, these blocks returned an error when the computation failed

In p

onverge. This error no longer occurs. Instead, select the Show error

to c

tus port check box on the block dialog to make the error port E appear.

sta

can then connect this port to a block such as the Simulink Assertion block

You

receive information about the convergence of the output.

Signal Processing Blockset™ Release Notes

2-D Support Adde

2-D support has b

• Matrix Product

• Matrix Sum

• Maximum

• Minimum

Multichanne

Multichann

• Autocorrel

• Levinson-

• LSF/LSP to

• Yule-Wal

• Zero Cros

Blocks R

The DSP G blocks

ain, DSP Sum, DSP Product, and DSP Fixed-Point Attributes

have been removed from the Signal Processing Blockset product.

een added to the following blocks:

l Support Added

el support has been added to the following blocks:

ation LPC

Durbin

LPC Conversion

ker AR Estimator

sing

emoved from Product

Compatibility Considerations

You ca model no rep

n replace any DSP Gain, DSP Sum, and DSP Product blocks in your

s with Simulink Gain, Sum, and Product blocks, respectively. There is

lacement for the DSP Fixed-Point Attributes block.

Version 6.3 (R2006a) Signal Processing Blockset™ Software

Version 6.3 (R2006a) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.3 (R2006a):

New Features and Changes

Yes Details below

Version Compatibility Considerations

No Bug Reports

New features and changes introduced in this version are

• “Integration of Filter Blocks with Signal Processing Toolbox Filter Objects

and FVTool” on page 51

• “Transposed Direct Form Structure Added to FIR Decimation Block” on

page 52

• “Data Type Specification Modes Added to CIC Decimation and CIC

Interpolation Blocks” on page 52

• “Taylor Window Type Added to Window Function Block” on page 53

• “Reduced Simulation Memory Footprint for Fixed-Point Capable Blocks”

on page 53

• “Improved Usability for the To Wave Device Block” on page 53

• “New Demos” on page 53

Fixed Bugs and Known Problems

Includes fixes

Related Documentation at Web Site

Integration of Filter Blocks with Signal Processing ToolboxFilterObjectsandFVTool

Significant enhancements were made to the following filter blocks for this release:

• CIC Decimation

• CIC Interpolation

• FIR Decimation

• FIR Interpolation

Signal Processing Blockset™ Release Notes

• FIR Rate Conversion

The changes made to these blocks bring them into closer alignment with the Signal Processing Toolbox product:

• These filter blocks can now operate in two different modes, which you select

in the Coefficient source group box. If you select Dialog parameters, you enter information about the filter in the block mask. If you select Multirate filter object (MFILT), you can now specify the filter using a

mfilt object from the Signal Processing Toolbox product.

• YoucannowopentheSignalProcessingToolbox

masks to view the filter response.

A few minor changes have also been made to the Digital Filter block mask to bring it into closer alignment with these blocks and with the Signal Processing Toolbox product. H ow ev er, most of the updates to this block for this improvement were made in the previous release. See “Di gi tal Filter Block Enhancements” on page 54.

fvtool from the block

Transposed Direct Form Structure Added to FIR Decimation Block

You can now implement either a transposed direct form or a direct form structure with the FIR Decimation block using the Filter structure parameter.

The addition of the transposed direct form structure to this block brings it into closer alignment to the Signal Process ing Toolbox

mfilt.firdecim object.

Data Type Specification Modes Added to CIC Decimation and CIC Interpolation Blocks

The Data type specification mode parameter has been added to the CIC Decimation and CIC Interpolation blocks. This parameter allows you to choose how the word and fraction lengths are specified for the filter sections and outputs. You can choose to fully specify the word and fraction lengths of the filter sections and outputs yourself, or have one or more of these quantities automatically selected for you.

Version 6.3 (R2006a) Signal Processing Blockset™ Software

This feature brings these blocks into closer alignment with the Signal Processing Toolbox

mfilt.cicdecim and mfilt.cicinterp objects.

Taylor Window Type Added to Window Function Block

TheTaylorwindowtypehasbeenaddedtotheWindowFunctionblock. The block functionality in this mode is identical to that of the Signal Processing Toolbox

taylorwin function.

Reduced Simulation Memory Footprint for Fixed-Point Capable Blocks

Fixed-point capable Signal Processing Blockset blocks now use less memory as they simulate. There is no change to the memory requirements for the generated code from these blocks.

Improved Usability for the To Wave Device Block

TheusabilityoftheToWaveDevice block has been improved with the addition of the Automatically determine intern al buffer size and User-defined internal buffer size parameters. These parameters allow you to define the size of the chunks of data that are written to the hardware audiodevicebytheblock,independently of the input dimensions. The block reference page in the documentation also has significant updates, includi n g a “Troubleshooting” section. Refer to the reference page for more information.

New Demos

Signal Processing Demo

Demo Name

DTMF Generator and Receiver Communications

Envelope Detection Miscellaneous

Internet Low Bitrate C odec (iLBC)

Library Location Launch Command

Audio Processing

dspdtmf

dspenvdet

dspilbc

Signal Processing Blockset™ Release Notes

Version 6.2 (R14SP3) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.2 (R14SP3):

New Features and Changes

Yes Details below

Version Compatibility Considerations

No Bug Reports

New features and changes introduced in this version are

• “New Numerically Controlled Oscillator (NCO) Block” on page 54

• “Digital Filter Block Enhancements” on page 54

• “Fixed-Point Support Added to the Matrix Multiply Block” on page 55

• “Simulink Virtual Bus Support Added to Key Blocks” on page 55

• “New Audio Sample Rate Conversion Demo” on page 55

Fixed Bugs and Known Problems

Includes fixes

Related Documentation at Web Site

New Numerically Controlled Oscillator (NCO) Block

The NCO block in the Signal Operations library is new for this release.

Digital Filter Block Enhancements

SignificantenhancementsweremadetotheDigitalFilterblockforthis release:

• Digital Filter can now operate in two different modes, which you select in

the Filter source group box. If you select Specify filter characteristics in dialog, you enter information about the filter in the block mask as in previous releases. If you select Specify discrete-time filter object (DFILT), you can now specify the filter using a Signal Processing Toolbox product.

• You can now open the Signal Processing Toolbox

Filter block mask to view the filter response.

dfilt object from the

fvtool from the Digital

Version 6.2 (R14SP3) Signal Processing Blockset™ Software

Fixed-Point Sup

port Added to the Matrix Multiply

Block

The Matrix Multi Product block. types.

Simulink Virt

Simulink®vi

• DCT

• Delay

• Flip

• Overwrite

• Submatrix

• Transpos

For more i Simulin

nformation on virtual buses, refer to “Using Buses” in the Using

k documentation.

New Aud

The new conver (CD sam conve Help b

AudioSampleRateConversiondemoillustratesaudiosamplerate

sion of a 48 kHz (DAT sampling rate) input audio signal to a 44.1 kHz

pling rate) output audio signal using a multistage multirate FIR rate

rsion approach. You can access this demo from the Demos pane of the

rowser under Blocksets > Signal Processing > Audio Processing.

ply block now has functionality identical to the Simulink

The block now supports Boolean, integer, and fixed-point data

ual Bus Support Added to Key Blocks

rtual bus support has been added to the following blocks:

Values

io Sample Rate Conversion Demo

Signal Processing Blockset™ Release Notes

Version 6.1 (R14SP2) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.1 (R14SP2):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes—Details labeled as Compatibility Considerations, below. See also Summary.

New features and changes introduced in this version are

• “Broader Support for the Logging of Simulation Minimums and Maximums

and Fixed-Point Autoscaling” on page 56

• “Fixed-Point Support for the DCT and IDCT Blocks” on page 56

• “New Audio File Source and Sink Blocks” on page 57

• “Multirate Support for CIC Filter Blocks” on p age 57

• “Obsolete Blocks” on page 57

Fixed Bugs and Known Problems

Bug Reports Includes fixes

Related Documentation at Web Site

Broader Suppor t for the Logging of Simulation Minimums and Maximums and Fixed-Point Autoscaling

An increased number of fixed-point capable Signal Processing Blockset blocks now support the logging of simulation minimums and maximums and autoscaling v ia the Fixed-Point Settings interface.

Fixed-Point Support for the DCT and IDCT Blocks

The DCT and IDCT blocks now support fixed-point data types.

Version 6.1 (R14SP2) Signal Processing Blockset™ Software

New Audio File So

The F rom Multime Specific I/O > W i

Multirate Sup

The CIC Decima sample-based

Obsolete Blo

The blocks i still shipp the Signal P replaceme

n the table below are obsolete, although they are currently

ed with the product, and may be removed in a future version of

rocessing Blockset product. We recommend that you use the

nt blocks listed in the third column.

dia File and To Multimedia File blocks in the Platform

ndows (WIN32) library are new in this release.

port for CIC Filter Blocks

tion and CIC Interpolation blocks now support multirate

processing.

cks

urce and Sink Blocks

Compatibility Considerations

You can ru you are us obsolete that are

To acces

Replac

n the Signal Processing Blockset function

ing any obsolete blocks in your models. If your models are using blocks, we strongly recommend that you exchange them for blocks currently supported.

s each replacement block, type the library name listed in the

ement Block(s) Library column at the MATLAB

dsp_links to see if

command line.

Obsolete (R11.1) Block

Analog Filter Design

Analytic Signal

Autocorrelation

kward

Bac

stitution

Sub

Biquadratic Filter

Buffer

Obsolete Block Library

dspddes2

dspbdsp2

dspvect2

dsplinalg

parch2

dspbuff2

Replacement Block(s)

Analog Filter Design

Analytic Signal

Autocorrelation

kward

Bac

stitution

Sub

Digital Filter

Buffer

Replacement Block(s) Library

dsparch4

dspxfrm3

dspstat3

dspsolvers

parch4

dspbuff3

Signal Processing Blockset™ Release Notes

Obsolete (R11.1) Block

Buffered FFT Frame Scope

Burg A R Estimator

Burg Method

Chirp

Cholesky Factorization

Cholesky Solver

Commutator

Complex C epstrum

Complex E xponential

Constant Diagonal Matrix

Contiguous Copy

Convert Complex DSP to Simulink

Convert Complex Simulink to DSP

Convolution

Correlation

Covariance AR Estimator

Covariance Method

Create Diagonal Matrix

Cumulative Sum

Obsolete Block Library

dspsnks2

dspparest2

dspspect2

dspsrcs2

dsplinalg

dspswit2

dspxfrm2

dspelem2

dspmtrx2

dspelem2

dspvect2

dspparest2

dspspect2

dspmtrx2

dspvect2

Replacement Block(s)

Spectrum Scope

Burg A R Estimator

Burg Method

Chirp

Cholesky Factorization

Cholesky Solver

Reshape > Frame Conversion > Unbuffer

Complex C epstrum

Complex E xponential

Constant Diagonal Matrix

Contiguous Copy

No Direct Replacement

Convolution

Correlation

Covariance AR Estimator

Covariance Method

Create Diagonal Matrix

Cumulative Sum

Replacement Block(s) Library

dspsnks4

dspparest3

dspspect3

dspsrcs4

dspfactors

dspsolvers

Simulink block,

dspsigattribs, dspbuff3

dspxfrm3

dspmathops

dspmtrx3

dspobslib

N/A

dspsigops

dspstat3

dapparest3

dspspect3

dspmtrx3

dspmathops

Version 6.1 (R14SP2) Signal Processing Blockset™ Software

Obsolete (R11.1) Block

Counter

dB Gain

DCT

Detrend

Difference

Digital FIR Filter Design

Digital FIR Raised Cosine Filter Design

Digital IIR Filter Design

Direct-Form II Transpose Filter

Discrete Constant

Discrete Impuls e

Distributor

Downsample

Dyadic Analysis Filter Bank

Dyadic Synthesis Filter Bank

Edge Detector

Event-Count Comparator

Extract Diagonal

Extract Triangular Matrix

Obsolete Block Library

dspswit2

dspelem2

dspxfrm2

dspbdsp2

dspvect2

dspddes2

dsparch2

dspsrcs2

dspswit2

dspbdsp2

dspmlti2

dspswit2

dspmtrx2

Replacement Block(s)

Counter

dB Conversion

dB Gain

DCT

Detrend

Difference

Digital Filter Design

Digital Filter

DSP Constant

Discrete Impuls e

Buffer

Downsample

Dyadic Analysis Filter Bank

Dyadic Synthesis Filter Bank

Edge Detector

Event-Count Comparator

Extract Diagonal

Extract Triangular Matrix

Replacement Block(s) Library

dspswit3

dspmathops

dspxfrm3

dspstat3

dspmathops

dsparch4

dspsrcs4

dspbuff3

dspsigops

dspmlti4

dspswit3

dspmtrx3

Signal Processing Blockset™ Release Notes

Obsolete (R11.1) Block

FFT

FFT Frame Scope

Filter Realization Wizard

FIR Decimation

FIR Interpolation

FIR Rate Conversion

Flip

Forward Substitution

Frequency Frame Scope

From Wave Device

From Wave File

Histogram

IDCT

IFFT

Inherit Complexity

Integer Delay

Kalman Ad ap tiv e Filter

LDL Factorization

LDL Solver

Least Squares FIR Filter Design

Levinson Solver

LMS Adaptive Filter

LPC

Obsolete Block Library

dspxfrm2

dspsnks2

dsparch2

dspmlti2

dspvect2

dsplinalg

dspsnks2

dspsrcs2

dspstat2

dspxfrm2

dspelem2

dspbdsp2

dspadpt2

dsplinalg

dspddes2

dsplinalg

dspadpt2

dspbdsp2

Replacement Block(s)

FFT

Spectrum Scope

Filter Realization Wizard

FIR Decimation

FIR Interpolation

FIR Rate Conversion

Flip

Forward Substitution

Vector Scope

From Wave Device

From Wave File

Histogram

IDCT

IFFT

Inherit Complexity

Delay

Kalman Ad ap tiv e Filter

LDL Factorization

LDL Solver

Digital Filter Design

Levinson-Durbin

LMS Filter

Autocorrelation LPC

Replacement Block(s) Library

dspxfrm3

dspsnks4

daparch4

dspmlti4

dspindex

dspsolvers

dspsnks4

dspwin32

dspstat3

dspxfrm3

dspsigattribs

dspsigops

dspadpt3

dspfactors

dspsolvers

dsparch4

dspsolvers

dspadpt3

dsplp

Version 6.1 (R14SP2) Signal Processing Blockset™ Software

Obsolete (R11.1) Block

LU Factorization

LU Solver

Magnitude FFT

Matrix 1-Norm

Matrix Constant

Matrix From Workspace

Matrix Multiplication

Matrix Product

Matrix Scaling

Matrix Square

Matrix Sum

Matrix To Workspace

Matrix Viewer

Maximum

Mean

Median

Minimum

Modified Covariance AR Estimator

Modified Covariance Method

Multiphase Clock

Normalization

N-Sample Enable

N-Sample Switch

Obsolete Block Library

dsplinalg

dspspect2

dspmtrx2

dspsnks2

dspstat2

dspparest2

dspspect2

dspswit2

dspvect2

dspswit2

Replacement Block(s)

LU Factorization

LU Solver

Magnitude FFT

Matrix 1-Norm

Replacement Block(s) Library

dspfactors

dspsolvers

dspspect3

dspmtrx3

Constant Simulink block

Signal From

dspsrcs4

Workspace

Matrix Multiply

Matrix Product

Matrix Scaling

Matrix Square

Matrix Sum

To Workspace

Matrix Viewer

Maximum

Mean

Median

Minimum

Modified Covariance

dspmtrx3

Simulink block

dspsnks4

dspstat3

dspparest3

AR Estimator

Modified Covariance

dspspect3

Method

Multiphase Clock

Normalization

N-Sample Enable

N-Sample Switch

dspswit3

dspmathops

dspswit3

Signal Processing Blockset™ Release Notes

Obsolete (R11.1) Block

Overlap-Add FFT Filter

Overlap-Save FFT Filter

Partial Unbuffer

Permute Matrix

Polynomial Evaluation

Queue

QR Factorization

QR Solver

Random Source

Repeat

Real Cepstrum

Rebuffer

Reciprocal Condition

Remez FIR Filter Design

Reshape

RLS Adaptive Filter

RMS

Shift Register

Sample and Hold

Short-Time FFT

Signal From Workspace

Signal To Workspace

Obsolete Block Library

dsparch2

dspbuff2

dspmtrx2

dspelem2

dspbuff2

dsplinalg

dspsrcs2

dspbdsp2

dspxfrm2

dspbuff2

dsplinalg

dspddes2

dspmtrx2

dspadpt2

dspstat2

dspbuff2

dspswit2

dspspect2

dspsrcs2

dspsnks2

Replacement Block(s)

Overlap-Add FFT Filter

Overlap-Save FFT Filter

Submatrix > Unbuffer

Permute Matrix

Polynomial Evaluation

Queue

QR Factorization

QR Solver

Random Source

Repeat

Real Cepstrum

Buffer

Reciprocal Condition

Digital Filter Design

Reshape

RLS Filter

RMS

Delay Line

Sample and Hold

Periodogram

Signal From Workspace

Signal To Workspace

Replacement Block(s) Library

dsparch4

dspmtrx3, dspbuff3

dspmtrx3

dsppolyfun

dspbuff3

dspfactors

dspsolvers

dspsrcs4

dspsigops

dspxfrm3

dspbuff3

dspmtrx3

dsparch4

Simulink block

dspadpt3

dspstat3

dspbuff3

dspsigops

dspspect3

dspsrcs4

dspsnks4

Version 6.1 (R14SP2) Signal Processing Blockset™ Software

Obsolete (R11.1) Block

Sine Wave

Sort

Stack

Standard Deviation

Submatrix

Time Frame Scope

Time-Varying Direct-Form II Transpose Filter

Time-Varying Lattice Filter

Toeplitz

To Wave Device

To Wave File

Transpose

Triggered Matrix To Workspace

Triggered Shift Register

Triggered Signal From Workspace

Triggered Signal To Workspace

Unbuffer

Uniform Decoder

Uniform Encoder

Unwrap

Upsample

Obsolete Block Library

dspsrcs2

dspstat2

dspbuff2

dspstat2

dspmtrx2

dspsnks2

dsparch2

dspmtrx2

dspsnks2

dspmtrx2

dspsnks2

dspbuff2

dspbdsp2

dspsnks2

dspbuff2

dspquant

dspvect2

dspbdsp2

Replacement Block(s)

Sine Wave

Sort

Stack

Standard Deviation

Submatrix

Vector Scope

Digital Filter

Toeplitz

To Wave Device

To Wave File

Transpose

Triggered To Workspace

Triggered Delay Line

Triggered Signal From Workspace

Triggered To Workspace

Unbuffer

Uniform Decoder

Uniform Encoder

Unwrap

Upsample

Replacement Block(s) Library

dspsrcs4

dspstat3

dspbuff3

dspstat3

dspmtrx3

dspsnks4

dsparch4

dspmtrx3

dspwin32

dspmtrx3

dspsnks4

dspbuff3

dspsigops

dspsnks4

dspbuff3

dspquant2

dspsigops

Signal Processing Blockset™ Release Notes

Obsolete (R11.1) Block

User-defined Frame Scope

Variable Fractional Delay

Variable Integer Delay

Variable Selector

Variance

Wavelet Analysis

Wavelet Synthesis

Window Function

Yule-Walker AR Estimator

Yule-Walker IIR Filter Design

Yule-Walker Method

Obsolete Block Library

dspsnks2

dspbdsp2

dspelem2

dspstat2

dspmlti2

dspbdsp2

dspparest2

dspddes2

dspspect2

Replacement Block(s)

Vector Scope

Variable Fractional Delay

Variable Integer Delay

Variable Selector

Variance

Wavelet Analysis

Wavelet Synthesis

Window Function

Yule-Walker AR Estimator

Digital Filter Design

Yule-Walker Method

Replacement Block(s) Library

dspsnks4

dspsigops

dspindex

dapstat3

dspobslib

dspsigops

dspparest3

dsparch4

dspspect3

Version 6.0.1 (R14SP1) Signa l Processing Blockset™ Software

Version 6 .0.1 (R14SP1) Signal Processing Blockset Software

New Features and Changes

Yes Details below

This table summ

Version Compatibility Considerations

New features and changes introduced in this version are

• “Changes from the Previous Release” on page 65

• “New Demos” on page 66

• “Enhanced Blocks” on page 66

arizes what’s new in Version 6.0.1 (R14SP1):

Fixed Bugs and Known Problems

Fixed bugs

Related Documentation at Web Site

Changes from the Previous Release

In this release, the following blocks have been affected by changes in the behavior of source block dialog boxes and the Model Explorer. See the “Changed Source Dialog Box Behavior” se ction in the Simulink Release Notes.

• Chirp

• Constant Diagonal Matrix

• DSP Constant

• Multipha se Clock

• N-Sample Enable

• Random Source

• Sine Wave

Signal Processing Blockset™ Release Notes

New Demos

Signal Processing Demo

Demo Name

Cochlear implant speech processor

Creating sample-based signals Working with Signals

Creating frame-based signals Working with Sign als

Creating multichannel signals Working with Signals

Splitting and reordering multichannel signals

Importing signals

Exporting signals

Library Location Launch Command

Audio Processing

Working with Signals

dspcochlear_all

(Platform independent)

dspcochlear_all_fixpt

(Platform independent, fixed-point version)

dspcreatesbsigs

dspcreatefbsigs

dspcreatemltichansigs

dspsplitreordmltichansigs

dspimportsigs

dspexportsigs

Enhanced Blocks

The following blocks have been enhanced for Release 14SP1:

• Sample and Hold

• Spectrum Scope

The Sample and Hold block has a new parameter, the Latch (buffer) input check box. If you select this check box, the block outputs the value of the input f rom the pre viou s time step until the next triggering event occurs. This parameter enables this block to be used i n a feedback loop.

The Spectrum Scope block has two new parameters, Window type and Window sampling.UsetheWindow type parameter to specify which window to apply to the input. Use the Window sampling parameter to specify whether the window samples are computed in a periodic or a symmetric manner.

Version 6.0 (R14) Signal Processing Blockset™ Software

Version 6.0 (R14) Signal Processing Blockset Software

This table summarizes what’s new in Version 6.0 (R14):

New Features and Changes

Yes Details below

Version Compatibility Considerations

Yes—Details labeled as Compatibility Considerations, below. See also Summary.

New features and changes introduced in this version are

• “Product Name Change” on page 68

• “Additional Fixed-Point Support” on page 68

• “New Blocks” on page 70

• “Enhanced Blocks” on page 73

• “Renamed Blocks” on page 74

• “New Demos” on page 74

• “Triggered Subsystem Support” on page 75

• “Constant Sample Time Support” on page 75

• “Source Blocks Obey New Simulink Inherited Sample Time Parameter”

on page 75

Fixed Bugs and Known Problems

Fixed bugs

Related Documentation at Web Site

• “Signal & Scope Manager Support” on page 76

• “Multitasking Support” on page 76

• “Multirate Models” on page 77

• “Scalar Quantizer Block Obsoleted” on p age 77

• “Obsolete Product Versions” on page 77

Signal Processing Blockset™ Release Notes

Product Name Cha

DSP Blockset has

Additional Fix

For this relea added to the Si

been renamed. The new name is Signal Processing Blockset.

ed-Point Support

se, significant support for fixed-point development has been

gnal Processing Blockset product.

nge

New Fixed-Point Blocks

The followin

• CIC Decimat

• CIC Interpo

• Offset

• Peak Finde

• Scalar Qu

• Vector Q

• Zero Cr

g new blocks support fixed-point data types:

ion

lation

antizer Decoder

antizer Encoder

uantizer Decoder

uantizer Encoder

ossing

Blocks with Added Fixed-Point Support

llowing blocks now support fixed-point data types:

The fo

• Const

• Cumu

• Diff

• Dig

• FIR

• Hi

ant Ramp

lative Product

lative Sum

erence

ital Filter — m ore structures now support fixed-point data types

Rate Conversion

stogram

• Levinson-Durbin

• LMS Filter

• Matrix 1-Norm

• Matrix Scaling

• Mean

• Median

• Normalization

• Short-Time FFT

• Signal From Workspace

• Signal To Workspace

• Sort

• Triggered Signal From Workspace

• Triggered To Workspace

Version 6.0 (R14) Signal Processing Blockset™ Software

• Toeplitz

• Two-Channel Analysis Subband Filter

• Two-Channel Synthesis Subband Filter

Fixed-Point Blocks with New Complex Suppor t

The following blocks supported real fixed-point data types in the last major release. They now also support complex fixed-point data types:

• Autocorrelation

• Convolution

• Correlation

• FIR Decimation

• FIR Interpolation

• Sort

Signal Processing Blockset™ Release Notes

Fixed-Point Blocks with a New Interface

Many of the Signal Processing Blockset blocks that support fixed-point data types have a new, easier-to-use interface. For more information, see “Specifying Fixed-Point Attributes” in the Signal Processing Blockset User’s Guide.

New Automatic Selection of Fixed-Point Word and Fraction Lengths

Many fixed-point capable Signal Processing Blo ckset blocks allow you to set intermediate data types via block mask parameters. The Accumulator, Product output,andOutput parameters on many such blocks have a new

Inherit via internal rule setting. When you select Inherit via

internal rule

fraction lengths will be automatically calculated for you. In general, all the bits are preserved in the internal block algorithm for quantities using this selection. That is, the accumulator, product output, or block output word and fraction lengths are selected such that

, the accumulator, product output, or block output word and

• No overflow occurs

• No precision loss occurs

Internal rule equations specific to each block are given in the block referen ce pages.

New Logging of Simulation Minimums and Maximums and Autoscaling

A number of fixed-point capable Signal Pro cessing Blockset blocks now support the logging of simulation minimums and maximums and autoscaling via the Fixed-Point Settings interface.

New Blocks

This section gives a brief descriptionofeachofthenewblocks.

Version 6.0 (R14) Signal Processing Blockset™ Software

CIC Decimation and CIC Interpolation

The CIC Decimation and CIC Interpolation blocks are in the Filtering/ Multirate Filters library. These blocks decimate or interpolate a signal using a Cascaded Integrator-Comb filter.

G711 Codec

The G711 Codec block is in the Quantizers library. This block encodes a linear, pulse code modulation (PCM) narrowband speech signal using an A-law or mu-law encoder. The block decodes index values into quantized output values using an A-law or mu-law decoder. The block converts between A-law and mu-law index values.

InverseShort-TimeFFT

The Inverse Short-Time FFT block is in the Transforms library. This block recovers the time-domain signal by performing an inverse short-time, fast Fourier transform operation.

LPC to/from Cepstral Coefficients

The LPC to/from Cepstral C oefficie n ts block is in the Linear Prediction library. This block converts linear prediction coefficients (LPC s) to cepstral coefficients (CC s) or cepstral coefficients to linear prediction coefficients.

Offset

The Offset block is in the Signal Operations library. This block truncates vectors by removing or keeping beginning or ending values.

Peak Finder

The Peak Finder block is in the Signal Operations library. This block finds the local maxima and/or minima of an input signal.

Scalar Quantizer Decoder

The Scalar Quantizer Decoder block is in the Quantizers library. This block converts each index value into a quantized output value.

Signal Processing Blockset™ Release Notes

Scalar Quantizer Encoder

The Scalar Quantizer Encoder block is in the Quantizers library. This block encodes each input value by associating it with the index value of a quantization region.

Short-Time FFT

The S hort-Time FFT block is in the Transforms library. This block computes a nonparametric estimate of the spectrum using the short-time, fast Fourier transform method. The Short-Time FFT block that was located in the Power Spectrum Estimation library h as been renamed the P eriodogram block.

Vector Quantizer Decoder

The Vector Quantizer Decoder block is in the Quantizers library. This block finds the vector quantizer codeword that corresponds to a given, zero-based index value.

Vector Quantizer Design

The V ector Quantizer Design block is in the Quantizers library. This block designs a vector quantizer using the Vector Quantizer Design Tool (VQDTool).

Vector Quantizer Encoder

The Vector Quantizer Encoder block is in th e Quantizers library. This block finds the index of the nearest codeword based on a Euclidean or weighted Euclidean distance measure.

Waterfall

The Waterfall block is in the DSP Sinks library. This block enables you to view vectors of data over time.

Zero Crossing

The Zero Crossing block is in the Signal Operations library. This block counts the number of times a signal crosses zero.

Enhanced Blocks

This section giv

Counter

The Count data and unsigned i

Digital Filter

The Digital F

• FIR

es a brief description of each of the block enhancements.

type parameter of the Counter block now supports signed

ntegers.

ilter block now supports these additional filter structures:

Version 6.0 (R14) Signal Processing Blockset™ Software

- Direct form

- Direct for

• IIR Biquad

- Direct fo

- Direct f

Every fi

Biquad fixed-

lter structure now supports fixed-point data types.

(SOS) filter structures support interstage floating-point and

point scale values.

symmetric

m antisymmetric

(SOS)

rm I

rm I transposed

orm II

Matrix Viewer

The Ma

trix Viewer block parameters dialog box has been upgraded.

Scalar Quantizer Design

an now use th e Scalar Quantizer Design Tool to create Scalar Quantizer

You c

der and Scalar Quantizer Decoder blocks inside your models.

Enco

Signal Processing Blockset™ Release Notes

Sort

The Sort block now supports an additional sorting algorithm. Now, for the Sort algorithm parameter, you can choose either

. Previously, only the quick sort algorithm was supported.

sort

Renamed Blocks

Periodogram

The Short-Time FFT block that was located in the Power Spectrum Estimation library has been renamed the Periodogram block. This block computes a nonparametric estimate of the spectrum. All instances of the old Short-Time FFT block have been replaced by the Periodogram block.

New Demos

Signal Processing Demo

Demo Name

Adaptive filter convergence Adaptive Process ing

CELP speech coder Audio Processing

G711 A-law and A-Mu-A conversion

G711 Mu-law and Mu-A-Mu conversion

G711 and PCM encoding Audio Processing

Phase vocoder

Plucked string

Radar tracking demonstration

Short-Time Spectral Attenuation

Vector quantizer design Miscellaneous

Library Location Launch Command

Audio Processing

Aerospace

Spectral Analysis

Quick sort or Insertion

lmsxyplot

dspcelpcoder

dspg711amua

dspg711muamu

dspg711cmp

dsppitchtime

dsppluck

aero_radmod_dsp

dspstsa

dspvqtwodim

The Short-Time FFT demo in Spectral Analysis demo library is now the Periodogram demo.

Version 6.0 (R14) Signal Processing Blockset™ Software

The Acoustic Noise Canceler demo (dspanc) is now supported on all platforms. It also has a fixed-point version (

The Signal Processing Blockset product has a new demo library called Fixed-Point. This library contains demo models that support fixed-point data types.

dspanc_fixpt).

Triggered Subsystem Support

Signal Processing Blockset blocks now support triggered subsystems. The exceptions are

• Chirp

• Multipha se Clock

• Sine Wave

• Blocks with multiple sample times

Constant Sample Time Support

The Signal Processing Blockset product has extended support of constant sample times to its blocks. The output of blocks with constant sample times does not change during the simulation. Y ou can remove all blocks having constant sample times from the simulation "loop" by setting the Inline parameters option. If you select the Inline parameters check box on the Optimization pane of the Configuration Parameters dialog box, the parameters of these blocks cannot be changed during a simulation, and simulation speed is improved.

Source Blocks Obey New Simulink Inherited Sample Time Parameter

Signal Processing Blockset source blocks capable of inheriting their sample time obey a new Simulink inherited sample time p arameter. To view this parameter, open the Configuration Parameters dialog box. In the Select pane, expand Diagnostics and click Sample Time. The new parameter, Source block specifies -1 sample time appears in the left pane. This parameter can be set to

none, warning (default), or error.

Signal Processing Blockset™ Release Notes

The Random Source block is the only block that does not obey this parameter. If its Sample time parameter is set to itssampletimefromitsoutputportand never produces warnings or errors.

Signal & Scope Manager Support

You can use the Signal & Scope Manager to create and view signals without using blocks. The Signal Processing Blockset product provides signal generators and viewers that you can associate with your model using the Signal & Scope Manager. To view these generators and viewers, right-click in your model, and select Signal & Scope Manager.FromtheGenerators and Viewers lists, expand Signal Processing.

For information on how to use the Signal & Scope Manager, see “Introducing the Signal and Scope Manager” in the Simulink documentation.

Multitasking Support

If you have a multirate model that you want to run in MultiTasking mode and your model contains any of the blocks listed below, your reset event can be delayed as much as one reset time interval so your model behaves deterministically:

-1, the Random Source block inherits

• Minimum

• Maximum

• Mean

• Standard Deviation

• Variance

• RMS

• Cumulative Sum

• Cumulative Product

• Delay

To minimize delay in m ultirate models, run them in

SingleTasking mode.

Version 6.0 (R14) Signal Processing Blockset™ Software

Multirate Model

The following bl ports:

• Permute Matrix

• Variable Sele

• Variable Inte

ocks no longer support different sample rates at their input

ctor

ger Delay

Scalar Quant

The Scalar Q Encoder and

Obsolete P

As of Versi Blockset V supporte a future r

uantizer block has been replaced by the Scalar Quantizer Scalar Quantizer Decoder blocks.

roduct Versions

on 6.0 (Release 14) of the Signal Processing Blockset product, DSP ersions 2.2 (Release 10) and earlier are obsolete and no longer

d. DSP Blockset Version 3.x (Release 11) might also be obsoleted in

elease.

izer Block Obsoleted

Compatibility Considerations

Models t links wh contai blocks upgrad comma

hat contain blocks from Versions 2.2 and earlier will have broken en loaded into Simulink 6.0 (Release 14). If you have models that

n blocks from DSP Blockset Versions 2.2 or earlier, replace the older

by blocks from DSP Blockset Versions 4.0 (Release 12) or later before

ing to Signal Processing Blockset 6 . 0 software (Release 14). Use the nd

dsp_links to facilitate this process.

Signal Processing Blockset™ Release Notes

Compatibility Summary for Signal Processing Blockset Software

This table summarizes new features and changes that might cause incompatibilities when you upgrade from an earlier version, or wh en you use files on multiple versions. Details are provided in the description of the new feature or change.

Version (Release) New Features and Changes with

Version Compatib ility Impact

Latest Version V7.0 (R2010a)

V6.10 (R2009b) See the Compatibility

See the Compatibi l ity Considerations subheading for each of these new features or changes:

• “NewTimeScopeBlock”onpage5

• “Obsolete Blocks” on page 10

Considerations subheading for each of these new features or changes:

• “Periodogram and Spectrum Scope

Blocks Support Mean-Square Spectrum” on page 12

• “Power Spectrum E stimation

Blocks Compute PSD Like the Signal Processing Toolbox Spectrum Objects” on page 13

• “Spectrum Scope Computes

Both One-Sided and Two-Sided Spectra” on page 14

• “To A udio Device Block

Handles Sample-Based Signals Differently” on page 19

Compatibility Summary for Signal Processing Blockset™ Software

Version (Release) New Features and Changes with

Version Compatib ility Impact

• “Zero-Latency Filter Structure

Removed from CIC Blocks” on page 19

• “Empty Initial Conditions Support

Removed from Some Blocks” on page 19

V6.9 (R2009a) See the Compatibil ity

Considerations subheading for each of these new features or changes:

• “Zoom Capability for Spectrum

Scope and Vector Scope Blocks” on page 21

• “Variable Fractional Delay Block

Enhancements” on page 24

• “R12 Filtering Blocks

Functionality Changed” on page 26

V6.8 (R2008b) See the Compatibil ity

Considerations subheading for each of these new features or changes:

• “Counter Block Enhancements”

on page 30

• “FFT Block Correctly Applies

Divide-By-Two on Butterfly Outputs” on page 31

• “Matrix Sum Block Is Now the

Simulink Sum Block” on page 31

Signal Processing Blockset™ Release Notes

Version (Release) New Features and Changes with

V6.7 (R2008a) See the Compatibil ity

V6.6 (R2007b) See the Compatibil ity

Version Compatib ility Impact

Considerations subheading for each of these new features or changes:

• “Tunability Status Changed for

Stack a nd Queue Blocks” on page 34

• “DSP Constant Block Removed in

FavorofConstantBlock”onpage 35

• “Obsolete Blocks” on page 36

Considerations subheading for each of these new features or changes:

• “New To Audio Device and From

Audio D ev ice Blocks” on page 37

• “Tunability Status Changed for

Some Block Parameters” on page 40

• “Levinson-Durbin Block Now

Treats Frame-Based Row Vectors Differently” on page 42

Compatibility Summary for Signal Processing Blockset™ Software

Version (Release) New Features and Changes with

Version Compatib ility Impact

V6.5 (R2007a) See the Compatibil ity

Considerations subheading

for each of these new features or changes:

• “R11.1 Blocks Have Been

Removed in R 2007a — Run Helper Script Before Upgrading” on page 43

• “Zero Pad Block Removed” on

page 46

• “Pad Block Can Truncate Either

End of an Input Signal” on page 46

V6.4 (R2006b) See the Compatibil ity

Considerations subheading for each of these new features or changes:

• “R11.1 Blocks Will Be Removed in

R2007a” on page 47

• “Diagnostic Output Port Added to

Report a Failure to Converge” on page 49

• “Blocks Removed from Product”

on page 50

V6.3 (R2006a)

V6.2 (R14SP3)

None

V6.1 (R14SP2) See the Compat ib i lity

Considerations subheading for this new feature or change:

• “Obsolete Blocks” on page 57

Signal Processing Blockset™ Release Notes

Version (Release) New Features and Changes with

Version Compatib ility Impact

V6.0.1 (R14SP1)

None

V6.0 (R14) See the Compatibi l ity

Considerations subheading for this new feature or change:

• “Obsolete Product Versions” on

page 77

Mathworks SIGNAL PROCESSING BLOCKSET RELEASE NOTES

Specifications and Main Features

Frequently Asked Questions

User Manual