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Guide: M/S processing in Mixing & Mastering
A lot of questions have been asked lately about "depth" and "width" in recordings. One of the ways to articulate and bring out stereo information in a recording is the usage of M/S (Mid/Side) coding.
M/S transforms a Left/Right signal into a Mid/Side signal, where both can be treated individually in order to get better processing results in your mix. The simple option is to insert a M/S plugin and turn up the side signal a notch in order to get a wider stage. However, often this also introduces some unwanted artifacts in kick and bass, which sort of make this option not very viable for dance music.
More advanced is to use a plug that can be put in ENCODER and DECODER mode and convert te signal to M/S, process M & S seperately and then ENCODE it back to stereo.
VOXENGO has a FREE VST , which allows you to do exactly that:
MSED
MSED can be used in 2 ways:
1- Inline Mode:
- Insert 1 instance, select "Inline" which allows you to change gain for M & S independently, changing the relative volume between the 2 WITHOUT additional processing. > just place the plug somewhere in the masterbus and start changing level
2- Encoder / Decoder Mode:
- Start 1 instance in "Encoder" Mode at the top the chain, this converts L/R in M/S (L=M) (R=S)
- Place any stereogear behind the Encoder and it's left channel will process Mid signal, while it's right channel will process side signal
- At the end of the chain, place another instance of MSED, but now in "Decoder" Mode, This converts the processed signal back from M/S to L/R
You need real STEREO plugins to insert inbetween, where you can dissable the "stereo linkage" in order to have the M & S dynamics being processed induvidually, if you don't have real stereo plugins, you can also convert your channel to 2 mono channels (DAW dependent) and process the M & S signal seperately with mono instances of your plugins.
A clear advantage of M/S processing can be to avoid the "treble crunch" which is compression distortion on highs, which is triggered by heavy compressing. limiting the lows. But there is a multitude of scenarios where this technology can be leveraged.
As with all effects, being conservative is key, otherwise you might introduce more issues than solving.
MSED is free, so suggest you give it a go and hear for yourself.
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Analogue Mastering
Esoteric sound for the discerning ear
Last edited by Raphie on Mar-05-2011 at 08:38
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