[pulseaudio-discuss] Config option to disable auto microphone boost?

[Laszlo KERTESZ]

Hello,
Is there a config option to disable the automatic microphone gain
adjustments? I am referring to the case where the recording section in
alsamixer has a microphone boost option that can be adjusted.
When voip applications are used, particularly with echo-cancel, this slider
is automatically adjusted, sometimes causing very loud background noise.
This can be disabled manually if i edit the corresponding conf files in
/usr/share/pulse/alsa-mixer/paths/ (Debian) and i set the volume option
from merge to zero for the boost control then restart pulseaudio. But these
changes are overwritten on every update.

Is there a method of achieving this without editing those files, preferably
an option in the pulseaudio's own configuration?
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