2010/4/6 Nicolo' Chieffo nicolo.chieffo@gmail.com
I've already attached my alsa-info.log in my first post.
- alsamixer -3 dB (94%):
Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined penum Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 57079 [87%] [on] Front Right: Playback 57079 [87%] [on]
- alsamixer 0 dB (100%):
Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined penum Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 64044 [98%] [on] Front Right: Playback 64044 [98%] [on]
you should notice that 0dB of Pulseaudio volume control is not at the maximum dB i.e. ( floating point 1.0 is not at 100% any more , seem that floating point 0 (-inf dB) is also not at 0% point too )
http://thread.gmane.org/gmane.linux.alsa.devel/70545/focus=70585
As mentioned for the PA case I decided to shift 0dB to max
amplification in any case, which I think is a workable way to avoid this problem.
how about "dbmeasure pulse" and "dbmeasure hw:0,0" ?