[pulseaudio-discuss] Reverting ade0a6f88464d8aecf83982d400ccfc402341920
david.henningsson at canonical.com
Fri May 13 08:29:24 PDT 2011
On 2011-05-13 09:49, Tanu Kaskinen wrote:
> Should this commit be reverted?
> 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
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.
More information about the pulseaudio-discuss