6 May
2020
6 May
'20
8:58 a.m.
On Tue, 5 May 2020, S. wrote:
Hi there, recently I've been running into major
problems with Electron apps
for the Linux desktop (Microsoft Teams and Riot.im) modifying my mic input
levels. Also Chrome / Chromium do the same thing during WebRTC calls, they
raise my mic level to 100%, thus completely saturating the audio and making
it unusable. I drop it back down manually, but within a few seconds it
creeps back up to 100% again. In Windows there's an option to not allow
programs to control a specific device. Is there any way to do this with ALSA
and/or PulseAudio? Thanks a lot.
Use jack as the back end for pulse and unload the alsa and udev modules
from pulse. Pulse sees jack as the only sink/source and has no access to
alsa controls. Any level adjustments pulse can do from there on are dsp
level changes.
Thats what I know best because I run jack all the time anyway. however, I
think it should also be possible to change the device profile for your
device in pulse to use that directly. (that is break the profile :) ) on
my machine pulse hides its profiles in:
/usr/share/pulseaudio/alsa-mixer/profile-sets/
I do not konw how to set profiles up or really how they work. I am blessed
with an audio device that pulse finds confusing and leaves alone (ice1712
based).
--
Len Ovens
www.ovenwerks.net