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.