1 Feb
2013
1 Feb
'13
4:56 p.m.
Zita-ajbridge
Zita-ajbridge provides two applications, zita-a2j and zita-j2a. They
allow to use an ALSA device as a Jack client, to provide additional
capture (a2j) or playback (j2a) channels. Functionally these are
equivalent to the alsa_in and alsa_out clients that come with Jack,
but they provide much better audio quality. The resampling ratio will
typically be stable within 1 PPM and change only very smoothly. Delay
will be stable as well even under worst case conditions, e.g. the Jack
client running near the end of the cycle
On 1 February 2013 15:36, S C Rigler <riglersc(a)gmail.com> wrote:
On Fri, Feb 1, 2013 at 9:00 AM, James Harkins
<jamshark70(a)gmail.com> wrote:
FWIW, I tried alsa_out once upon a time, to
handle a 4-channel-out USB interface
that appears to Linux as two stereo devices. It was a complete disaster. After
booting Jack and launching alsa_out, it took between 5 and 10 minutes before the
devices would synchronize. Before that, constant glitching. Then, if I left the
devices silent for a time, they would go out of sync again after a few minutes.
More glitching.
At that point, I started to feel that was no longer a viable solution to
explore. I (still) wouldn't trust alsa_out or _in for anything serious.
YMMV.
hjh
My primary audio interface is an Echo AudioFire 4 and I'll
occasionally use alsa_in to route a (mono) M-Audio JamLab into
Guitarix. It works well enough for that and what the OP was asking
sounded like a similar case.
--Steve
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