[pulseaudio-discuss] [PATCH 3/4] alsa-mixer: Always turn "Inverted Internal Mic" off

Tanu Kaskinen tanuk at iki.fi
Thu Jun 28 09:36:20 PDT 2012

On Thu, 2012-06-28 at 16:27 +0200, David Henningsson wrote:
> Some devices have inverted right channel, so when you add left and right,
> the result is silence, or very faint sound. In recent kernels (3.5,
> perhaps also 3.4) these are starting to be marked with a special
> "Inverted Internal Mic" capture switch.
> While we might want to add some reverse summing mechanism in the
> future, for now, we just turn the thing off to avoid the problem of
> recording silence.
> Signed-off-by: David Henningsson <david.henningsson at canonical.com>



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