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SA VE THESE INSTRUCTIONS
2
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AVIS
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Reverb<>Compress51342
Revrse LaserVerb103459
Ring Modulator3801256
Rotor 12951144
Shaper<>Reverb3222194
SingleLFO Phaser2531116
SoftKneeCompress3311195
Spectral 4-Tap154275
Spectral 6-Tap155375
St Chor+4Tap ms4271305
St Chor+Delay ms4261305
St Chor+Dly+Rvrb4082305
St Chorus+4Tap4071305
St Chorus+Delay4061305
St Flan+4Tap ms4771305
St Flan+Delay ms4761305
St Flan+Dly+Rvrb4582305
St Flange+4Tap4571305
St Flange+Delay4561305
StCh+Dly+Rvrb ms4282305
Stereo Analyze4991308
Stereo Hall13335
Stereo Image2801135
StereoDistort+EQ3043158
StFl+Dly+Rvrb ms4782305
Subtle Distort3051167
Super Shaper3061168
Surround704321
Switch Loops172289
Tone Suppressor3752251
TQ Place6319
TQ Place 5.170212311
TQ Verb7319
TQ Verb 5.170312311
Tremolo2711128
Tremolo BPM2701128
TrigEnvelopeFilt3612234
TubeAmp<>MD>Chor3173188
TubeAmp<>MD>Flan3183188
VC+Dist+1Rotor 22932144
VC+Dist+HiLoRot22942144
VC+Dist+HiLoRotr2922144
VC+Dist+Rotor 42964144
VC+Tube+Rotor 42974144
VibChor+Rotor 22902144
VibratoPhaser2541116
WackedPitchLFO3873274
11
KSP8 Algorithm Specifications
MiniVerbs
1 MiniVerb
2 Dual MiniVerb
600 Mn MiniVerb
Versatile, small stereo and dual mono reverbs
PAUs:1 for MiniVerb
2 for Dual MiniVerb
MiniVerb is a versatile stereo reverb found in many combination algorithms, but is equally useful on its
own because of its small size. The main control for this effect is the Room Type parameter. Room Type
changes the structure of the algorithm to simulate many carefully crafted room types and sizes. Spaces
characterized as booths, small rooms, chambers, halls and large spaces can be selected.
Dry
L Input
R Input
Figure 1Simplified Block Diagram of MiniVerb
Each Room Type incorporates different diffusion, room size and reverb density settings. The Room Types
were designed to sound best when Diff Scale, Size Scale and Density are set to the default values of 1.00x.
If you want a reverb to sound perfect immediately, set the Diff Scale, Size Scale and Density parameters to
1.00x, pick a Room Type and you’ll be on the way to a great sounding reverb. But if you want to
experiment with new reverb flavors, changing the scaling parameters away from 1.00x can cause a subtle
(or drastic!) coloring of the carefully crafted Room Types.
Diffusion characterizes how the reverb spreads the early reflections out in time. At very low settings of
Diff Scale, the early reflections start to sound quite discrete, and at higher settings the early reflections are
seamless. Density controls how tightly the early reflections are packed in time. Low Density settings have
the early reflections grouped close together, and higher values spread the reflections for a smoother reverb.
L PreDelay
R PreDelay
Miniverb
Dry
Core
WetOut Gain
L Output
R Output
12
L Input
Dry
MiniVerbBalance
Pan
Wet
L Output
R Input
MiniVerb
Dry
Wet
Balance
Pan
Figure 2Simplified Block Diagram of Dual MiniVerb
Dual MiniVerb has a full MiniVerb, including Wet/Dry, Pre Delay and Out Gain controls, dedicated to
both the left and right channels. In Figure 2, the two blocks labeled MiniVerb contain a complete copy of
the contents of Figure 1. Dual MiniVerb gives you independent reverbs on both channels which has
obvious benefits for mono material. With stereo material, any panning or image placement can be
maintained, even in the reverb tails! This is pretty unusual behavior for a reverb, since even real halls will
rapidly delocalize acoustic images in the reverberation. Since maintaining image placement in the
reverberation is so unusual, you will have to carefully consider whether it is appropriate for your
particular situation. To use Dual MiniVerb to maintain stereo signals in this manner, set the reverb
parameters for both channels to the same values. The Dry Pan and Wet Bal parameters should be fully left
(-100%) for the left MiniVerb and fully right (100%) for the right MiniVerb.
MiniVerb Parameters:
Page 1
Wet/Dry0 to 100%wetOut GainOff, -79.0 to 24.0 dB
Rvrb Time0.5 to 30.0 s, InfHF Damping8 to 25088 Hz
L Pre Dly0 to 620 msR Pre Dly0 to 620 ms
R Output
Page 2
Room TypeHall1Diff Scale0.00 to 2.00x
Size Scale0.00 to 4.00x
Density0.00 to 4.00x
13
Dual MiniVerb Parameters
Page 1
L Wet/Dry0 to 100%wetR Wet/Dry0 to 100%wet
L Out GainOff, -79.0 to 24.0 dBR Out GainOff, -79.0 to 24.0 dB
L Wet Bal-100 to 100%R Wet Bal-100 to 100%
L Dry Pan-100 to 100%R Dry Pan-100 to 100%
Page 2
L RoomTypeHall1
L RvrbTime0.5 to 30.0 s, Inf
L Diff Scl0.00 to 2.00xL Density0.00 to 4.00x
L Size Scl0.00 to 4.00xL HF Damp8 to 25088 Hz
L PreDlyL0 to 620 msL PreDlyR0 to 620 ms
Page 3
R RoomTypeHall1
R RvrbTime0.5 to 30.0 s, Inf
R Diff Scl0.00 to 2.00xR Density0.00 to 4.00x
R Size Scl0.00 to 4.00xR HF Damp8 to 25088 Hz
R PreDlyL0 to 620 msR PreDlyR0 to 620 ms
Wet/ Dry A simple mix of the reverb sound with the dry sound.
Out GainThe overall gain or amplitude at the output of the effect.
Rvrb TimeThe reverb time displayed is accurate for normal settings of the other parameters (HF
Damping = 25088kHz, and Diff Scale, Room Scale and Density = 1.00x). Changing Rvrb
Time to Inf creates an infinitely sustaining reverb.
HF DampingReduces high frequency components of the reverb above the displayed cutoff frequency.
Removing higher reverb frequencies can often make rooms sound more natural.
L/R Pre DlyThe delay between the start of a sound and the output of the first reverb reflections from
that sound. Longer predelays can help make larger spaces sound more realistic. Longer
times can also help improve the clarity of a mix by separating the reverb signal from the
dry signal, so the dry signal is not obscured. Likewise, the wet signal will be more audible
if delayed, and thus you can get by with a dryer mix while maintaining the same
subjective wet/dry level.
Room TypeChanges the configuration of the reverb algorithm to simulate a wide array of carefully
designed room types and sizes. This parameter effectively allows you to have several
different reverb algorithms only a parameter change away. Smaller Room Types will
sound best with shorter Rvrb Times, and vice versa. (Note that since this parameter
changes the structure of the reverb algorithm, you don’t want to modulate it.)
14
Diff ScaleA multiplier which affects the diffusion of the reverb. At 1.00x, the diffusion will be the
normal, carefully adjusted amount for the current Room Type. Altering this parameter
will change the diffusion from the preset amount.
Size ScaleA multiplier which changes the size of the current room. At 1.00x, the room will be the
normal, carefully tweaked size of the current Room Type. Altering this parameter will
change the size of the room, and thus will cause a subtle coloration of the reverb (since the
room’s dimensions are changing).
DensityA multiplier which affects the density of the reverb. At 1.00x, the room density will be the
normal, carefully set amount for the current Room Type. Altering this parameter will
change the density of the reverb, which may color the room slightly.
Wet BalIn Dual MiniVerb, two mono signals (left and right) are fed into two separate stereo
reverbs. If you center the wet balance (0%), the left and right outputs of the reverb will be
sent to the final output in equal amounts. This will add a sense of spaciousness.
15
3 Gated MiniVerb
A reverb and gate in series
PAUs:2
This algorithm is a small reverb followed by a gate. The main control for the reverb is the Room Type
parameter. Room Type changes the structure of the algorithm to simulate many carefully crafted room
types and sizes. Spaces characterized as booths, small rooms, chambers, halls and large spaces can be
selected.
Each Room Type incorporates different diffusion, room size and reverb density settings. The Room Types
were designed to sound best when Diff Scale, Size Scale and Density are set to the default values of 1.00x.
If you want a reverb to sound perfect immediately, set the Diff Scale, Size Scale and Density parameters to
1.00x, pick a Room Type and you’ll be on the way to a great sounding reverb. But if you want experiment
with new reverb flavors, changing the scaling parameters away from 1.00x can cause a subtle (or drastic!)
coloring of the carefully crafted Room Types.
Diffusion characterizes how the reverb spreads the early reflection out in time. At very low settings of Diff
Scale, the early reflections start to sound quite discrete, and at higher settings the early reflections are
seamless. Density controls how tightly the early reflections are packed in time. Low Density settings have
the early reflections grouped close together, and higher values spread the reflections for a smoother reverb.
The gate turns the output of the reverb on and off based on the amplitude of the input signal.
A gate behaves like an on off switch for a signal. One or both input channels is used to control whether the
switch is on (gate is open) or off (gate is closed). The on/off control is called “side chain” processing. You
select which of the two input channels or both is used for side chain processing. When you select both
channels, the sum of the left and right input amplitudes is used. The gate is opened when the side chain
amplitude rises above a level that you specify with the Threshold parameter.
The gate will stay open for as long as the side chain signal is above the threshold. When the signal drops
below the threshold, the gate will remain open for the time set with the Gate Time parameter. At the end of
the Gate Time, the gate closes. When the signal rises above threshold, it opens again. What is happening is
that the gate timer is being constantly retriggered while the signal is above threshold.
1
0
attack
time
signal rises
above threshold
signal falls
below threshold
gate
time
release
time
Figure 3Gate Behavior
16
If Gate Duck is turned on, then the behavior of the gate is reversed. The gate is open while the side chain
signal is below threshold, and it closes when the signal rises above threshold.
If the gate opened and closed instantaneously, you would hear a large digital click, like a big knife switch
was being thrown. Obviously that’s not a good idea, so Gate Atk (attack) and Gate Rel (release) parameters
are use to set the times for the gate to open and close. More precisely, depending on whether Gate Duck is
Off or On, Gate Atk sets how fast the gate opens or closes when the side chain signal rises above the
threshold. The Gate Rel sets how fast the gate closes or opens after the gate timer has elapsed.
The Signal Dly parameter delays the signal being gated, but does not delay the side chain signal. By
delaying the main signal relative to the side chain signal, you can open the gate just before the main signal
rises above threshold. It’s a little like being able to pick up the telephone before it rings.
Parameters
Page 1
Wet/Dry0 to 100%wetOut GainOff, -79.0 to 24.0 dB
Rvrb Time0.5 to 30.0s, InfHF Damping8 to 25088 Hz
L Pre Dly0 to 620msR Pre Dly0 to 620 ms
Page 2
Room TypeHall1Diff Scale0.00 to 2.00x
Size Scale0.00 to 4.00x
Density0.00 to 4.00x
Page 3
Gate Thres-79.0 to 0.0 dBGate Time0 to 3000 ms
Gate DuckIn or OutGate Atk0.0 to 228.0 ms
Gate Rel0 to 3000 ms
GateSigDly0.0 to 25.0 ms
||||||||||||||||||||||||||||||Reduction
-dB 60 40 ❃ 16 ❃ 8 4 0
Wet/DryA simple mix of the reverb sound with the dry sound. When set fully dry (0%), the gate is
still active.
Out Gain An overall level control of the effect’s output (applied after the gate).
Rvrb TimeThe reverb time displayed is accurate for normal settings of the other parameters (HF
Damping = 25088kHz, and Diff Scale, Room Scale and Density = 1.00x). Changing Rvrb
Time to Inf creates an infinitely sustaining reverb.
HF DampingReduces high frequency components of the reverb above the displayed cutoff frequency.
Removing higher reverb frequencies can often make rooms sound more natural.
L/R Pre DlyThe delay between the start of a sound and the output of the first reverb reflections from
that sound. Longer predelays can help make larger spaces sound more realistic. Longer
times can also help improve the clarity of a mix by separating the reverb signal from the
dry signal, so the dry signal is not obscured. Likewise, the wet signal will be more audible
17
if delayed, and thus you can get by with a dryer mix while maintaining the same
subjective wet/dry level.
Room TypeThe configuration of the reverb algorithm to simulate a wide array of carefully designed
room types and sizes. This parameter effectively allows you to have several different
reverb algorithms only a parameter change away. Smaller Room Types will sound best
with shorter Rvrb Times, and vice versa. (Note that since this parameter changes the
structure of the reverb algorithm, you may not modulate it.)
Diff ScaleA multiplier which affects the diffusion of the reverb. At 1.00x, the diffusion will be the
normal, carefully adjusted amount for the current Room Type. Altering this parameter
will change the diffusion from the preset amount.
Size ScaleA multiplier which changes the size of the current room. At 1.00x, the room will be the
normal, carefully tweaked size of the current Room Type. Altering this parameter will
change the size of the room, and thus will cause a subtle coloration of the reverb (since the
room’s dimensions are changing).
DensityA multiplier which affects the density of the reverb. At 1.00x, the room density will be the
normal, carefully set amount for the current Room Type. Altering this parameter will
change the density of the reverb, which may color the room slightly.
Gate ThresThe input signal level in dB required to open the gate (or close the gate if Gate Duck is on).
Gate DuckWhen set to Off, the gate opens when the signal rises above threshold and closes when
the gate time expires. When set to On, the gate closes when the signal rises above
threshold and opens when the gate time expires.
Gate TimeThe time in seconds that the gate will stay fully on after the signal envelope rises above
threshold. The gate timer is started or restarted whenever the signal envelope rises above
threshold.
Gate AtkThe attack time for the gate to ramp from closed to open (reverse if Gate Duck is On) after
the signal rises above threshold.
Gate RelThe release time for the gate to ramp from open to closed (reverse if Gate Duck is On)
after the gate timer has elapsed.
Signal DlyThe delay in milliseconds (ms) of the reverb signal relative to the side chain signal. By
delaying the reverb signal, the gate can be opened before the reverb signal rises above the
gating threshold.
18
Reverbs
4 Classic Place
5 Classic V erb
6 TQ Place
7 TQ V erb
8 Diffuse Place
9 Diffuse V erb
10 OmniPlace
11 OmniV erb
Reverb algorithms
PAUs:2 (Classic) or 3 (others)
This set of 2- and 3-PAU algorithms can be divided into 2 groups: Verb and Place. Verb effects allow userfriendly control over medium to large spaces. Their decay times are controlled by Rvrb Time or
LateRvbTim parameters, and Room Types range from rooms to large areas. Place algorithms on the other
hand are optimized for small spaces. Decay time is controlled by the Absorption parameter, and Room
Types offers several booths.
Each reverb algorithm consists of a several components: a diffuser, an injector, predelay, an ambience
generator with feedback, and various filters. These components provide sonic building blocks for both the
body of the reverb and the early reflection portions.
The ambience generator is the heart of each reverb algorithm and creates most of the “late” reverb in
algorithms with an Early Reflections circuit. It consists of a complex arrangement of delay lines to disperse
the sound. By using feedback in conjunction with the ambience generator, a reverb tail is produced. The
length of this reverb tail is controlled by the Rvrb Time parameter in the Verb algorithms, or the
Absorption parameter in Place algorithms.
In order to create reverbs that are smoother and richer, some of the delays in the ambience generator are
moved by LFOs. The LFOs are adjusted by using the LFO Rate and LFO Depth controls. When used subtly,
unwanted artifacts such as flutteriness and ringiness that are inherent in digital reverbs can be reduced.
In the feedback loop of the ambience generator are filters that further enhance the sonic properties of each
reverb. A lowpass filter is controlled by HF Damping and mimics high frequency energy that is absorbed
as the sound travels around a room. A low shelving filter is controlled by LF Split and LF Time, which are
used to shorten or lengthen the decay time of low frequency energy.
At the beginning of each algorithm are diffusers. A diffuser creates an initial “smearing” quality on input
signals usually before the signal enters the ambience generating loop. The DiffAmtScl and DiffLenScl
parameters change the amount and the length of time that the sound is smeared. The Diffuse reverbs,
however, implement diffusion a little differently. See the sections on Diffuse Verb and Diffuse Place on
page 25 for detailed information.
Some algorithms use injector mechanisms when feeding a signal into the ambience generator. An injector
creates copies of the input signal at different delay intervals and feeds each copy into the ambience
generator at different points. This results in finer control over the onset of the reverb. By tapering the
amplitudes of early copies vs. late copies, the initial build of the reverb can be controlled. Inj Build controls
this taper. Negative values create a slower build, while positive values create a faster build. Inj Spread
scales the time intervals that the copies are made. Inj Skew (Omni reverbs) delays one channel relative to
the other before injecting into the ambience generator. Negative values delay the left side while positive
19
values delay the right side. Inj LP controls the cutoff frequency of a 1-pole (6dB/oct) lowpass filter
associated with the injector.
Predelay can give the illusion that a space is more voluminous. Separate control over left and right
predelay is provided that can be used to de-correlate the center image, increasing reverb envelopment.
In addition to filters inside the ambience feedback loop, there also may be filters placed at the output of the
reverb including a low shelf, high shelf, and/or lowpass.
Algorithms that use Early Reflection circuits employ a combination of delays, diffusers, and filters to
create ambience that is sparser than the late portion of the reverb. These early reflections model the initial
near-discrete echoes rebounding directly off of near field surfaces before the reverb has a chance to become
diffuse. They add realism when emulating real rooms and halls.
Your starting point when creating a new reverb preset should be the Room Type parameter. This
parameter selects the basic type of reverb being. Due to the inherent complexity of reverb algorithms and
the sheer number of variables responsible for their character, the Room Type parameter provides
condensed preset collections of these variables. Each Room Type collection has been painstakingly
selected by Kurzweil engineers to provide the best sounding combination of mutually complementary
variables modeling an assortment of reverb families.
When you select a room type, an entire incorporated set of delay lengths and diffusion settings are
established within the algorithm. By using the Size Scale, DiffAmtScl, DiffLenScl, and Inj Spread
parameters, you may scale individual elements away from their pre-defined value. When set to 1.00x, each
of these elements is equivalent to its preset value as determined by the current Room Type.
Room Types with similar names in different reverb algorithms do not sound the same. For example, Hall1
in Diffuse Verb does not sound the same as Hall1 in TQ Verb.
The Size Scale parameter scales the inherent size of the reverb chosen by Room Type. For a true
representation of the selected Room Type size, set this to 1.00x. Scaling the size below this will create
smaller spaces, while larger scale factors will create large spaces. See Room Type for more detailed
information.
The InfinDecay switch is designed to override the Rvrb Time parameter and create a reverb tail with an
infinite decay time when On. However, certain HF Damping settings may reduce this effect, and cause the
tail to taper away.
Classic Verb and Classic Place
Classic reverbs are 2-PAU algorithms with early reflections. The late portion consists of an input diffuser,
ambience generator with low shelving filters, lopass filters, and LFO moving delays, and predelay.
The early reflection portion consists of one delay per channel sent to its own output channel controlled by
E Dly L and E Dly R, and one delay per channel sent to its opposite output channel controlled be E Dly LX
and E Dly RX. Each of these delays also use a Diffuser. Diffusion lengths are separately controlled by
E DifDly L, E DifDly R, E DifDly LX, and E DifDly RX while diffusion amounts are all adjusted with
E DiffAmt.
The late reverb and early reflection portions are independently mixed together with the Late Lvl and
EarRef Lvl controls. The wet signal is passed through a final high shelving filter before being mixed with
the dry signal.
20
L Input
DiffAmtScl
DiffLenScl
Diffusor
LF Mult
HF Damping
Rvrb Time
Absorption
L ER Output
L Pre Dly
EarRef Lvl
Late
Lvl
Treble
Dry
Wet
L Output
Ambience
Rvrb Time
Absorption
R Pre Dly
R ER Output
R Input
DiffAmtScl
DiffLenScl
Diffusor
HF Damping
LF Mult
Figure 4Signal flow of Classic Verb and Classic Place
E DfDlyScl
E DiffAmt
(Apply to all Diffusors)
E DifDlyL
E Dly L
L Input
E Dly LX
Diffusor
E DifDlyLX
Diffusor
E DifDlyR
Late
Lvl
EarRef Lvl
Treble
Blend
E Blend X
Out Gain
R Output
Wet
Dry
L ER Output
E Dly RX
R Input
E Dly R
Diffusor
E DifDlyRX
Diffusor
E Blend X
Blend
Figure 5Early reflection portion of Classic Verb and Classic Place
Parameters for Classic Verb and Classic Place:
Page 1(Classic Verb)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Rvrb Time0.00 to 60.00 sEarRef Lvl-100 to 100%
HF Damping0 to 25088 HzLate Lvl-100 to 100%
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
R ER Output
21
Page 1(Classic Place)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Absorption0 to 100 %EarRef Lvl-100 to 100%
HF Damping0 to 25088 HzLate Lvl-100 to 100%
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
Page 2(Classic Verb)
Room TypeHall1, ...DiffAmtScl0.00 to 2.00 x
Size Scale0.01 to 2.00xDiffLenScl0.00 to 2.00 x
InfinDecayOn or OffLFO Rate0.01 to 10.00 Hz
LFO Depth0.0 to 100.0 ct
TrebShlf F8 to 25088 HzLF Split8 to 25088 Hz
TrebShlf G-79.0 to 24.0 dBLF Time0.50 to 1.50 x
Page 2(Classic Place)
Room TypeHall1, ...DiffAmtScl0.00 to 2.00 x
Size Scale0.01 to 2.00xDiffLenScl0.00 to 2.00 x
LFO Rate0.01 to 10.00 Hz
LFO Depth0.0 to 100.0 ct
TrebShlf F8 to 25088 HzLF Split8 to 25088 Hz
TrebShlf G-79.0 to 24.0 dBLF Time0.50 to 1.50 x
Page 3
E DfDlyScl0.00 to 2.00 xE X Blend0 to 100 %
E DiffAmt-100 to 100 %
E Dly L0.0 to 720.0 msE Dly R0.0 to 720.0 ms
E Dly LX0.0 to 720.0 msE Dly RX0.0 to 720.0 ms
E DifDlyL0.0 to 160.0 msE DifDlyR0.0 to 160.0 ms
E DifDlyLX0.0 to 230.0 msE DifDlyRX0.0 to 230.0 ms
TQ Verb and TQ Place:
TQ reverbs are 3-PAU algorithms with early reflections. The late portion consists of an input diffuser,
injector, ambience generator with a lopass filter, low shelving filter, and LFO moving delays, and predelay.
The early reflection portion combines a combination of delays, diffusers, and feedback outlined by
Figure 7. The relative delay lengths are all fixed but are scalable with the E Dly Scl parameter. Relative
diffusion lengths are also fixed, and are scalable with the E DfLenScl parameter. Diffusion amount are
adjusted with E DiffAmt. The E Build parameter ramps the gains associated with each delay line in a way
that changes the characteristic of the onset of the early reflections. Negative amounts create a slower onset
while positive amount create a faster onset.
The late reverb and early reflection portions are independently mixed together with the Late Lvl and
EarRef Lvl controls. The wet signal is passed through a final high shelving filter before being mixed with
the dry signal.
22
L Input
Reverb Time
Absorption
DiffAmtScl
DiffLenScl
Diffuser
DiffAmtScl
DiffLenScl
Diffuser
Inj LP
L Pre Dly
Inj LP
R Pre Dly
InjBuild
InjSpread
Injector
Injector
InjBuild
InjSpread
LF Mult
LF Mult
Reverb Time
HF Damping
Ambience
HF Damping
Absorption
R Input
Figure 6Signal flow of TQ Verb and TQ Place
E Dly Scl
(Applies to
All Delays)
Delay
Diffusor
L ER Output
R ER Output
EarRef Lvl
Late Lvl
Late Lvl
EarRef Lvl
Treble
Treble
Wet
Wet
Dry
Out
Gain
Out
Gain
Dry
L Output
R Output
L Input
E PreDly L
E Fdbk Amt
Delay
Delay
Diffusor
Diffusor
Delay
Delay
Diffusor
Diffusor
Diffusor
R Input
E PreDly R
Delay
Delay
Delay
Figure 7Early reflection portion of TQ Verb and TQ Place
L ER Output
E Build
E Build
R ER Output
23
Parameters for TQ Verb and TQ Place:
Page 1(TQ Verb)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Rvrb Time0.00 to 60.00 sEarRef Lvl-100 to 100%
HF Damping0 to 25088 HzLate Lvl-100 to 100%
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
Page 1(TQ Place)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Absorption0 to 100 %EarRef Lvl-100 to 100%
HF Damping0 to 25088 HzLate Lvl-100 to 100%
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
Page 2(TQ Verb)
Room TypeHall1, ...TrebShlf F8 to 25088 Hz
Size Scale0.00 to 2.50xTrebShlf G-79.0 to 24.0 dB
InfinDecayOn or OffDiffAmtScl0.00 to 2.00 x
DiffLenScl0.00 to 2.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
Page 2(TQ Place)
Room TypeHall1, ...TrebShlf F8 to 25088 Hz
Size Scale0.00 to 2.50xTrebShlf G-79.0 to 24.0 dB
DiffAmtScl0.00 to 2.00 x
DiffLenScl0.00 to 2.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
Page 3
Inj Build-100 to 100 %Inj LP8 to 25088 Hz
Inj Spread0.00 to 2.50 x
E DiffAmt-100 to 100 %E Build-100 to 100 %
E DfLenScl0.00 to 2.50 xE Fdbk Amt-100 to 100 %
E DlyScl0.00 to 2.50 xE HF Damp8 to 25088 Hz
E PreDlyL0.0 to 150.0 msE PreDlyR0.0 to 150.0 ms
24
Diffuse Verb and Diffuse Place
Diffuse reverbs are 3-PAU algorithms and are characterized as such because of the initial burst of diffusion
inherent in the onset of the reverb. The diffusion consists of an input diffuser, ambience generator with a
lopass filter, low shelving filter, and LFO moving delays, and predelay.
In the diffuse reverbs, the diffuser is implemented a little differently. The diffuser is just inside the
ambience generation loop, so changes in diffusion create changes the reverb decay. The diffuse reverbs
also offer DiffExtent and Diff Cross parameters. DiffExtent selects one of seven arbitrary gate time lengths
of the initial diffusion burst, while Diff Cross adjusts the combination of left and right channels that are
diffused.
LateRvbTim
Absorption
LateRvbTim
Absorption
HF Damping
HF Damping
L Pre Dly
R Pre Dly
Lopass
Lopass
Wet
Wet
L Input
R Input
LF Mult
DiffExtent
Diff Cross
DiffusorAmbience
DiffAmtScl
DiffLenScl
LF Mult
Figure 8Signal flow of Diffuse Verb and Diffuse Place
Parameters for Diffuse Verb and Diffuse Place:
Page 1(Diffuse Verb)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
LateRvbTim0.00 to 60.00 s
HF Damping0 to 25088 HzLopass8 to 25088 Hz
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
Dry
L Output
Out Gain
R Output
Dry
Page 1(Diffuse Place)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Absorption0 to 100 %
HF Damping0 to 25088 HzLopass8 to 25088 Hz
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
25
Page 2(Diffuse Verb)
Room TypeHall1, ...DiffExtent1 to 7 x
Size Scale0.01 to 2.50xDiff Cross-100 to 100 %
InfinDecayOn or OffDiffAmtScl0.00 to 2.00 x
DiffLenScl0.01 to 2.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
Page 2(Diffuse Place)
Room TypeHall1, ...DiffExtent1 to 7 x
Size Scale0.01 to 2.50xDiff Cross-100 to 100 %
DiffAmtScl0.00 to 2.00 x
DiffLenScl0.01 to 2.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
OmniVerb and OmniPlace:
Omni reverbs are 3-PAU algorithms that consists of an input diffuser, injector, ambience generator with a
lopass filter, low shelving filter, and LFO moving delays, and predelay.
The Expanse parameter adjusts the amount of reverb energy that is fed to the edges of the stereo image. A
value of 0% concentrates energy in the center of the image, while non-zero values spread it out. Positive
and negative values impose different characteristics on the reverb image.
At the output of the reverb are a pair each of low shelving and high shelving filters.
26
L Input
DiffAmtScl
DiffLenScl
Diffuser
Lopass
Inj Build
Inj Spread
Inj Skew
Injector
LF Mult
Reverb Time
Absorption
Ambience
HF Damping
L Pre Dly
Treble
Bass
Wet
Dry
Out
Gain
L Output
DiffAmtScl
DiffLenScl
Diffuser
Lopass
InjectorR Pre Dly
Inj Build
Inj Spread
Inj Skew
LF Mult
Reverb Time
Absorption
HF Damping
Treble
Bass
Wet
R Input
Figure 9Signal flow of OmniVerb and OmniPlace
Parameters for OmniVerb and OmniPlace:
Page 1(OmniVerb)
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Rvrb Time0.00 to 60.00 s
HF Damping0 to 25088 HzLopass8 to 25088 Hz
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
Page 1(OmniPlace)
Out
Gain
Dry
R Output
Wet/Dry-100 to 100%Out GainOff; -79.0 to 24.0 dB
Absorption0 to 100 %
HF Damping0 to 25088 HzLopass8 to 25088 Hz
L Pre Dly0.0 to 230.0 msR Pre Dly0.0 to 230.0 ms
27
Page 2(OmniVerb)
Room TypeHall1, ...Expanse-100 to 100 %
Size Scale0.00 to 2.50x
InfinDecayOn or OffDiffAmtScl0.00 to 2.00 x
DiffLenScl0.00 to 4.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
Page 2(OmniPlace)
Room TypeHall1, ...Expanse-100 to 100 %
Size Scale0.00 to 2.50x
DiffAmtScl0.00 to 2.00 x
DiffLenScl0.00 to 4.50 x
LF Split8 to 25088 HzLFO Rate0.01 to 10.00 Hz
LF Time0.50 to 1.50 xLFO Depth0.0 to 100.0 ct
Page 3
TrebShlf F8 to 25088 Hz
Inj Build-100 to 100 %TrebShlf G-79.0 to 24.0 dB
Inj Spread0.00 to 4.50 xBassShlf F8 to 25088 Hz
Inj Skew-200 to 200 msBassShlf G-79.0 to 24.0 dB
Parameters
AbsorptionThis controls the amount of reflective material that is in the space being
emulated, much like an acoustical absorption coefficient. The lower the
setting, the longer it will take for the sound to die away. A setting of 0%
will cause an infinite decay time.
Rvrb TimeAdjusts the basic decay time of the late portion of the reverb.
LateRvbTimAdjusts the basic decay time of the late portion of the reverb after
diffusion.
HF DampingThis controls the amount of high frequency energy that is absorbed as the
reverb decays. The values set the cutoff frequency of the 1 pole (6dB/oct)
lowpass filter within the reverb feedback loop.
L Pre Dly, R Pre DlyThese control the amount that each channel of the reverb is delayed
relative to the dry signal. Setting different lengths for both channels can
de-correlate the center portion of the reverb image and make it seem
wider. This only affects the late reverb in algorithms that have early
reflections.
LopassControls the cutoff frequency of a 1 pole (6dB/oct) lowpass filter at the
output of the reverb. This only affects the late reverb in algorithms that
have early reflections.
28
EarRef LvlThe mix level of the early reflection portion of algorithms offering early
reflections.
Late LvlThe mix level of the late reverb portion of algorithms offering early
reflections.
Room TypeThis parameter selects the basic type of reverb being emulated, and
should be your starting point when creating your own reverb presets.
Due to the inherent complexity of reverb algorithms and the sheer
number of variables responsible for their character, the Room Type
parameter provides condensed preset collections of these variables. Each
Room Type preset has been painstakingly selected by Kurzweil engineers
to provide the best sounding collection of mutually complementary
variables modeling an assortment of reverb families. When a room type is
selected, an entire incorporated set of delay lengths and diffusion settings
are established within the algorithm. By using the Size Scale, DiffAmtScl,
DiffLenScl, and Inj Spread parameters, you may scale individual
elements away from their preset value. When set to 1.00x, each of these
elements are accurately representing their preset values determined by
the current Room Type.
Room Types with similar names in different reverb algorithms do not
sound the same. For example, Hall1 in Diffuse Verb does not sound the
same as Hall1 in TQ Verb.
Size ScaleScales the inherent size of the reverb chosen by Room Type. For a true
representation of the selected Room Type size, set this to 1.00x. Scaling
the size below this will create smaller spaces, while larger scale factors
will create large spaces. See Room Type for more detailed information.
InfinDecayFound in “Verb” algorithms. When turned On, the reverb tail will decay
indefinitely. When turned Off, the decay time is determined by the Rvrb
Time or LateRvbTim parameters.
LF SplitUsed in conjunction with LF Time. This controls the upper frequency
limit of the low frequency decay time multiplier. Energy below this
frequency will decay faster or slower depending on the LF Time
parameter.
LF TimeUsed in conjunction with LF Split. This modifies the decay time of the
energy below the LF Split frequency. A setting of 1.00x will make low
frequency energy decay at the rate determined by the decay time. Higher
values will cause low frequency energy to decay slower, and lower values
will cause it to decay more quickly.
TrebShlf FThe frequency of a high shelving filter at the output of the late reverb.
TrebShlf GThe gain of a high shelving filter at the output of the late reverb.
BassShlf FThe frequency of a low shelving filter at the output of the late reverb.
BassShlf GThe gain of a low shelving filter at the output of the late reverb.
DiffAmtSclThe amount of diffusion at the onset of the reverb. For true representation
of the selected Room Type diffusion amount, set to 1.00x.
DiffLenSclThe length of the diffusion at the onset of the reverb. For true
representation of the selected Room Type diffusion length, set to 1.00x.
Diff CrossThe onset diffusion cross-coupling character. Although subtle, this
parameter bleeds left and right channels into each other during onset
diffusion, and also in the body of the reverb. 0% setting will disable this.
Increasing this value in either the positive or negative direction will
increase its affect.
ExpanseAmount of late reverb energy biased toward the edges of the stereo
image. A setting of 0% will bias energy towards the center. Moving away
from 0% will bias energy towards the sides. Positive and negative values
will have a different character.
LFO RateThe rate at which certain reverb delay lines move. See LFO Depth for
more information.
LFO DepthAdjusts the detuning depth in cents caused by a moving reverb delay
line. Moving delay lines can imitate voluminous flowing air currents and
reduce unwanted artifacts like ringing and flutter when used properly.
Depth settings under 1.5ct with LFO Rate settings under 1.00Hz are
recommended for modeling real spaces. High depth settings can create
chorusing qualities, which won’t be unsuitable for real acoustic spaces,
but can nonetheless create interesting effects. Instruments that have little
if no inherent pitch fluctuation (like piano) are much more sensitive to
this LFO than instruments that normally have a lot of vibrato (like voice)
or non-pitched instruments (like snare drum).
Inj BuildUsed in conjunction with Inj Spread, this adjusts the envelope of the onset
of the reverb. Specifically, it tapers the amplitudes of a series of delayed
signals injected into the body of the reverb. Values above 0% will produce
a faster build, while values below 0% will cause the build to be more
gradual.
Inj SpreadUsed in conjunction with Inj Build, this scales the length of the series of
delays injected into the body of the reverb. For a true representation of
the selected Room Type injector spread, set this to 1.00x.
Inj LPThe cutoff frequency of a 1 pole (6dB/oct) lowpass filter applied to the
signal being injected into the body of the reverb.
Inj SkewThe amount of delay applied to either the left or right channel of the
reverb injector. Positive values delay the right channel while negative
values delay the left channel.
E DiffAmtThe amount of diffusion applied to the early reflection network.
E DfLenSclThe length of diffusion applied to the early reflection network. This is
influenced by E PreDlyL and E PreDlyR.
E Dly SclScales the delay lengths inherent in the early reflection network.
E BuildThe envelope of the onset of the early reflections. Values above 0% will
create a faster attack while values below 0% will create a slower attack.
E Fdbk AmtThe amount of the output of an early reflection portion that is fed back
into the input of the opposite channel in front of the early predelays.
Overall, it lengthens the decay rate of the early reflection network.
Negative values polarity invert the feedback signal.
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