Voxengo MSED User Guide
Version 3.3
https://www.voxengo.com/product/msed/
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Contents
Introduction 3
Features 3
Compatibility 3
User Interface Elements 4
Parameters 4
Plasma Vector Scope 4
Credits 6
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Introduction
MSED is a professional audio encoder-decoder plug-in for mid-side processing which
is able to encode (split) the incoming stereo signal into two components: mid-side
pair, and vice versa: decode mid-side signal pair into stereo signal.
MSED is also able to work in the “inline” mode with the ability to adjust mid and side
channels’ gain and panning without the need of using two plug-in instances in
sequence.
MSED can be used to flip the phase of the mid and side channels by 180 degrees, and
swap the stereo channels, and to extract the mid or side channel.
MSED features the “plasma” vector scope, stereo correlation and balance meters
which make it easier to monitor the stereo information present in the audio signal.
Features
Mid-side encoder and decoder
Inline mode
“Plasma” vector scope
Stereo correlation and balance meters
Input channel swapping
180-degree phase flipping
Mid-side panning
Preset manager
Undo/redo history
A/B comparisons
Contextual hint messages
All sample rates support
Zero processing latency
Compatibility
This audio plug-in can be loaded into any audio host application that conforms to the
AAX, AudioUnit, VST or VST3 plug-in specification.
This plug-in is compatible with Windows (32- and 64-bit Windows XP, Vista, 7, 8, 10
and later versions, if not announced otherwise) and macOS (10.8 and later versions,
if not announced otherwise, 64-bit Intel processor-based) computers (2.5 GHz dualcore or faster processor with at least 4 GB of system RAM required). A separate
binary distribution file is available for each target computer platform and audio plugin specification.
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User Interface Elements
Note: Most interface elements (buttons, labels) located on the top of the user
interface and on the bottom are standard among all Voxengo plug-ins and do not
require much learning effort. For an in-depth description of these and other
standard user interface elements and features please refer to the “Voxengo Primary
User Guide”. Learned once it will allow you to feel comfortable with all pro audio
plug-ins from Voxengo.
Parameters
The “Mode” selector specifies which processing mode should be used. The “Encode”
mode engages the mid-side encoding mode (input left/right signal is converted into
mid-side signal). The “Decode” mode enables mid-side decoding (input mid-side
signal is converted into left/right signal). The “Inline” mode performs mid-side
encoding, mid-side channel gain and panning adjustment and then decoding,
sequentially.
The “Ch Swap” switch swaps input channels when enabled.
The “Flip 180” switch allows you to flip signal phase in both channels by 180 degrees.
Such flipping does not swap channels.
The “Mid Gain” parameter adjusts the middle channel gain (in decibels). The “Mid
Mute” switch can be used to mute the middle channel completely.
The “Side Gain” parameter adjusts the side channel gain (in decibels). The “Side
Mute” switch can be used to mute the side channel completely.
Note that you can drag either the “Mid Gain” or “Side Gain” knob with the right
mouse button to enable inversely linked adjustment of both knobs.
The “Mid Pan” parameter adjusts middle channel’s stereo panning.
The “Side Pan” parameter adjusts side channel’s stereo panning.
The left meter is the stereo correlation meter, 500-millisecond average. Values -1..0
represent anti-phase, 0 – surround, 0..1 – in-phase stereo information.
The right meter is the stereo balance meter in decibel left/right, 500-millisecond
average. This meter displays how much one stereo side is louder than the other.
Applicable to stereo signals only.
Plasma Vector Scope
This window displays output signal’s vector scope, drawn in a “plasma-like” style.
This vector scope has a very special design. It uses loudness normalization which
places loudest signals on the outside, and different frequencies at different radiuses.
Lower frequencies, below 100 Hz, are placed on the outside while higher frequencies
are gradually placed inside the vector scope, with >10 kHz signals placed at about
40% of the outside radius. The reasoning behind such design is that with loudness
normalization the higher frequencies usually draw a very disperse images filling the
display and making spotting issues in the lower frequencies harder. Also such design
produces a more “alive” display where you can see how loudest frequencies change.
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Other than that, the vector scope provides the classical information: centered signals
draw a vertical line, panned signals draw diagonal lines, out-of-phase signals draw
horizontal lines, and uncorrelated signals draw circles.
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Credits
DSP algorithms, internal signal routing code, user interface layout by Aleksey Vaneev.
Graphics user interface code by Vladimir Stolypko. Graphics elements by Vladimir
Stolypko and Scott Kane.
This plug-in is implemented in multi-platform C++ code form and uses “zlib”
compression library (written by Jean-loup Gailly and Mark Adler), “LZ4”
compression library by Yann Collet, filter design equations by Robert BristowJohnson, VST plug-in technology by Steinberg, AudioUnit plug-in SDK by Apple,
Inc., AAX plug-in SDK by Avid Technology, Inc., Intel IPP and run-time library by
Intel Corporation (used under the corresponding licenses granted by these parties).
Voxengo MSED Copyright © 2004-2019 Aleksey Vaneev.
VST is a trademark and software of Steinberg Media Technologies GmbH.
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