[LAU] M/S processing w/o 'convenient' plugins

Fons Adriaensen fons at linuxaudio.org
Sat May 21 08:34:55 UTC 2016


On Sat, May 21, 2016 at 09:47:45AM +0200, Ralf Mardorf wrote:

> Jörn explained what those rare cases are.

Yes. When you have to modify a stereo mix, or a stereo signal
that is part of a mix. 

Do you claim that such cases don't exist ?

In theory anything that can be done in the L/R domain can be
done as well in the M/S domain and vice versa. But the simple
fact is that some things are much easier in one domain than
in the other. 

In particular:

* Anything that affects L and R in an assymetric way (e.g. 
modifying only L or R) is easy in L/R and difficult in M/S.
  
* Anything that affects L and R in a symmetric way (e.g.
modifying stereo width) is much more easily done in M/S.
That remain true even if you have access to the components
of a stereo mix. And certainly if doing the same thing in
L/R would require you panpots to go beyond their range
limits, or be frequency dependent.

Maybe you're not familiar which such techniques. In that
case just stop commenting.

Ciao,
     
-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)



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