On Wednesday 10 November 2010 08:43:09 Ken Restivo wrote:
The point of libsamplerate is exactly for word-clocks that are not in sync.
While both soundcards might say they run at 48 kHz, the master (which is=20
clocking jack) is running at 47990 Hz while the slave runs at 48010 Hz, tha=
is 20 Hz difference. Which means the slave needs the next block of audio 0.=
before the master, otherwise it will produce silence for 0.4 ms. Such a sma=
silence every second, actually several smaller clicks of silence each secon=
will be very audible as clicks in the slaves output.
The only way you can skip libsamplerate is when both really run from the sa=
word-clock but then the only reason to use alsa_[in|out] would be when the=
first device is a firewire/network/macosx device and you want to use the sa=
synced alsa device too...
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