On 2011-05-13 09:49, Tanu Kaskinen wrote: > Hello, > > Should this commit be reverted? No. > http://git.0pointer.de/?p=pulseaudio.git;a=commit;h=ade0a6f88464d8aecf83982d400ccfc402341920 > > I don't know what problem that commit solves,but it introduces a new > problem: if Pulseaudio requests a volume that is above 0dB in the alsa > volume element scale, then it can easily happen that alsa will round the > request down. That rounding is then compensated with software volume, > which in this case is amplification. We don't want software > amplification, or do we? In short; if we e g have Mic Boost levels at (0dB, 20dB, 40dB and 60dB) and the user wants 30 dB, better have 20dB in hardware and +10dB in software than 40dB in hardware and -10dB in software, as the latter one is more likely to have digital distortion when the signal passes through the ADC. There is a longer email on this list a while back, explaining more of the philosophy behind, but I can't seem to find it right now. -- David Henningsson http://launchpad.net/~diwic
