3 Mar
2004
3 Mar
'04
6:20 a.m.
On 3 Mar 2004, Petr Sumbera wrote:
Hello,
I would like to use JACKD with two SBLives! soundcards in Surround40
mode (8 output channels and 4 input channels). I have seen on internet
examples of "alsa.conf" how to use SBLive! in Surround40 mode and
also how to use two normal sound cards for jack.
Problem is that I am new to this problematic and I have no idea how to
achieve my desires. Can you please help me with this? I hope it is
possible.
this is not possible. the problem is that the oscillators that drive the
two cards will not be 100 per cent in sync. one will gradually fall
behind the other. it will not be immediately obvious, because there are
buffers, but once the timing difference between the cards exceeds the
buffer size, jackd will likely crash.
in general, the only cards that can be used this way are those with an
external sync in, such as word clock.
regards,
joern