2010/6/22 Colin Guthrie gmane@colin.guthr.ie
'Twas brillig, and Raymond Yau at 22/06/10 03:31 did gyre and gimble:
2010/6/14 Colin Guthrie gmane@colin.guthr.ie
I've made this change on my system and while previously my UI had no "Base Volume" displayed (because all my "h/w" (I include softvol in that) controls had their dB value >0.
as your card has no h/w gain, > 0dB , but the gain in softvol plugin is
a
software gain (i.e. in the red region in PA "s volume scale
how can base_volume display in gnome volume control (unamplified) ?
BTW , -46.5dB to 0dB of softvol plugin is software atten ( not h/w atten
)
As I said above, anything that comes from alsa is considered h/w amplification for the purposes of PA's volume scale. It's not practical to differentiate them
Software gain is different from hardware gain.
Clipping due to software gain +12dB cannot compensated by -12dB by hardware atten
.
Does any card actually configure softvol, by default, to provide any gain, > 0dB for outputs? If so, then this is IMO a bad idea.
-51dB to 0dB is also software atten of softvol plugin
if PA did not want to differeniate hardware/software gain/atten Just set this softvol PCM to 0dB and use PA 's own software gain/atten or don't use front device for HDA