15 Mar
2013
15 Mar
'13
4:07 p.m.
On Fri, 2013-03-15 at 10:48 -0400, Bill Gribble wrote:
You can very easily connect up equipment like you
describe, and get
processed audio back into your computer. It just works. However, the
audio that you get back into the computer will be delayed with respect
to the audio you sent out. How much depends on your JACK buffer
settings and the properties of your audio interface and external
equipment; you can measure it with "jdelay".
If you are planning to mix the new sounds with the old, you will need
to delay the old before mixing it with the new. Ardour and most other
DAW software will handle this automatically.
That's a half-truth!
If you want to monitor the mix in real-time not only by latency
compensation for the recording, than you need exorbitant low latency or
it's simply impossible to get good results.
I'm doing loop in for revberb. It does work for reverb, because the
reverb starts with delay, so I only need to reduce the delay for the 19"
gear by the latency of the PC hardware.
There's no guarantee that using a professional sound card, does provide
exorbitant low latency. I got lower latency for my Envy24 cards, as I
can get for my RME card. There are many factors hat can cause issues,
e.g. a bad mobo chip set and you can't know what will work and what not,
without testing.