[LAD] ALSA multi plugin and JACK xrun callbacks

[Jörn Nettingsmeier]

On 12/20/2010 09:14 AM, torbenh wrote:
>> torben, i wonder: will alsa_[in|out] be perfectly bit-transparent when
>> the two interfaces it bridges are externally synced, or will its
>> tracking algorithm keep oscillating around the correct samplerate?
> 
> it will oscilate, but the oscilation will get slower and slower,
> and its about 0.00001% so this is going to be pretty good.
> 
> but its not perfect.
> there are a bit of scheduler uncerteinties, which might perturbate the
> timebase.
> 
> if your interfaces are synced just use the pcm multi approach.
> if you dont care for bit-transparency, and dont want to edit a config
> file, use alsa_io.
> 
> the main purpose of alsa_io is jackd running with a jittery timebase.
> and i prefer optimizing it at that end.

absolutely! i was just curious...