[CM] New to SND
Kjetil Svalastog Matheussen
Thu, 30 Dec 2004 16:19:54 +0100 (CET)
Pam & Harold Norris:
> My interest in snd is realtime recording of our church service with
> editing afterwards. I know I can do this with arecord as well as a
> couple of others, but liked the looks of snd, especially the VU meters.
> HOWEVER, I need 8 channels in AND out. I have made some progress in
> achieving this but it seems like an uphill battle. I am using version
> 7.8 and snd_conffile.scm. I have gotten as far as the 8 channels in but
> haven't gotten 8 channels out to disk.
> Is snd the right software to use? Are there instructions somewhere
> which will tell me how to do this?
I don't think you should use snd_conffile.scm when playing 8 channels I'm
afraid to tell.
The file does some scheme things while playing which cause regular garbage
collections. Clicks can be avoided by setting a very very large dac-size,
but 8 channels is quite much...
Or you should be able to avoid it totally by removing the following lines
from snd_conffile.scm :
;; Show the time in the minibuffer when playing
(let ((samplecount 0))
(set! samplecount (+ samplecount (* 40 samples)))
(if (> samplecount (srate (selected-sound)))
(set! samplecount 0)
(c-show-times (cursor) #f)))
Anyway, snd only use one thread for all its work, which currently
sometime isn't very nice for realtime work. So perhaps you should
looking at ecasound or ardour instead...