17 Feb
2004
17 Feb
'04
11:10 p.m.
Hi Robert,
Thanks for the clarification. It xcertainly neededit after my
explaination :)
On Tue, 2004-02-17 at 03:27, Robert Jonsson wrote:
>
...
There's a misunderstanding here somewhere. The
samplerate you are running at
doesn't have anything to do with the size of the buffers you set up. (Well it
does, but in this discussion it does not.)
44.1khz, e.g. CD-standard is definitely supported by JACK, infact I think
pretty much any samplingrate is supported as long as the CARD/driver can
support it.
Now, in reality most cards only support the standard samplerates e.g. 32khz,
44.1khz, 48khz, 96khz...
....
I do recall reading that part of the problem with usb-audio is in the
spec itself.
---
Now, the size of the buffers, which normally are limited to ^2 are the amount
of data that the card/driver pre-buffers. You usually have a setting for
number of buffers also.
Lower is often better, causes less latency, but it also puts more strain on
the computer.
USB based soundcards do particularily don't like the ^2 sound-buffers, I think
there is a patch for jack so it supports any buffer size (unless it's already
integrated into jack...which is possible).
If the patch is ion there I don't know how to use it. In the end it
seems that usb-audio just isn't the wat to go if I want to use jack.
Thanks,
digger