[alsa-devel] Latency of mixer reconfiguration

[Mark Brown]

On Fri, Feb 19, 2010 at 10:01:26AM +0100, Jaroslav Kysela wrote:

> It's quite complex question and probably only hardware vendors knows 
> these internals for all devices. I guess also, that some devices also uses 
> volume ramping to avoid clicks.

The most common technique there is actually to do volume updates on zero
cross - ie, only update the gain when the signal level is zero.