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From: Jeff Learman <jjlearman@gmail.com>
To: sox-users@lists.sourceforge.net
Subject: MS->LR conversion: why does order matter with gain?
Date: Sat, 30 May 2020 14:46:21 -0400	[thread overview]
Message-ID: <CAGyjer5_KdCSof6MSgx+HCAupfwbEp2dD71KiVpXtHoSyMNSqw@mail.gmail.com> (raw)


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I'm converting mid-side to LR.  Originally I used this:

sox $MS $LR gain -0.5 : remix -m 1,2 1,2i

but found that the result does not have an important property of mid-side:
when summed to mono, the effect does not cancel out.
I changed it to this:

sox $MS $LR remix -m 1,2 1,2i : gain -0.5

and it works as expected.  Why is there a difference?  Note that there is
no clipping going on in either case.  My intuition says that MS->LR is
linear, so gain applied before or after should have the same effect.

Thanks!
Jeff

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             reply	other threads:[~2020-05-30 18:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-30 18:46 Jeff Learman [this message]
2020-05-30 18:52 ` MS->LR conversion: why does order matter with gain? Jeff Learman
2020-05-30 19:40   ` Jeff Learman

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