[pulseaudio-discuss] How to lock front audio volume to 50%?

[Raymond Yau]

>
> I'm trying to get the following to work: There's a SoundBlaster Live
> (emu10k1) soundcard in my PC and the bass is set to 90%. This causes a
> lot of audio distortion on the audio output because Pulseaudio always
> sets the front volume to 100 % (and keeps resetting it to that value).
> If I set it down to ~50 %, there are no issues.
>
> What I'd like to do now is forcing Pulseaudio to leave my front audio
> volume where I set it. I've consulted this page:
>
http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/PulseAudioStoleMyVolumes/
>
> There it says I should add the "control=" parameter to module-alsa-sink,
> so I added this to my configuration:
>
> load-module module-alsa-sink device=hw:1,0 control=PCM
>
> Now I have a second sink for the soundcard, but the sound is still
> cracking and the front volume setting doesn't have any impact on the
> sound anymore.
>
> Does anyone have a solution for this?

The tone controls treble/bass of SB Live have -12dB atten to +12dB gain ,
this mean that you need to keep those DSP volume controls to -12dB if you
set bass to maximun
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