Hi everyone, I got this info about the anolog audio output being cheap PWM with filtering from this thread : http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=8684 I'm assuming these guys know what they're talking about (I think the first reply metioning this is by a member of the Raspberry Pi team.
Cheers, Pierre 2012/8/14 Michael Zacherl <[email protected]> > > On 14.8.2012, at 01:47 , Miller Puckette wrote: > > > Thanks for the info... some quick ideas: > > good to know but that didn't help. > > I can't tell what it is but apparently it's a timing or order of execution > issue at startup in batch-mode: > Delaying the ; pd dsp 1 message by 200ms helps avoiding the "device busy" > error. > Same patch loaded in the gui, no problem. :-\ > > According to 'top' the cpu load drops from 75% to about 70% with -nogui > for a 4k-window. > Just about enough to avoid glitching. > But any system activity brings the sound to a halt for a short moment. > > So that was just an ssh-session and Pd running in batch-mode. > > At some point I'll go through this and see what can be done: > http://puredata.info/community/pdwiki/Optimize/ > > >> BTW, is it possible to quit Pd via the patch? > >> Just in case Pd has such high priority that the system becomes > inaccessible. > >> > > Yep: the message is "; pd quit" > > ah, of course! > > > thanks, Michael. > > > -- > feed your perception: http://blauwurf.at > http://soundcloud.com/noiseconformist > > > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list >
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