(My name is Alex, I just want to chime in real quick. Been following the convo, have a full-year's worth of Ubuntu LAD bug reports to deliver, not even sure how to go about it, but it's all 100% - or almost - stuff I haven't been able to find anywhere, and the reason I wanted to chime in until now is that this is the exact crux of the matter. I will keep in touch, no worries about that. Can't wait to deliver the Full Report on the Problem with LAD. 17 years computer-assisted sound design here, and I'm not alone in what has become the bane of my existence, which is why I just switched back to Windows, believe it or not. Don't mind me, just letting you know I'm here, listening, at the controls, headphones on.) -A.G.
On Mon, Mar 10, 2014 at 9:51 AM, Gianfranco Ceccolini < [email protected]> wrote: > Hi Guys > > sorry for the delay. carnival time here in Brasil... > > Jeremy: I'm using the BB Audio Cape, v1. I'll take a look at the audio > driver, but from our tests the BBB cpu won't do the job. We're heading to > the Cubie's A20 cpu. > > Paul. I'm really sorry for my lack of comprehension, but I still don't get > it. Is there a relation between the ALSA period with JACK's period? > > Kind regards > > Gianfranco > The MOD Team > > > > Em 28/02/2014, à(s) 17:01, Jeremy Jongepier <[email protected]> > escreveu: > > > On 02/28/2014 06:57 PM, Gianfranco Ceccolini wrote: > >> When starting it on the Beaglebone Black I get: > >> > >> > >> /usr/bin/jackd --realtime -P80 -dalsa -r48000 -p128 -n2 -Xraw > >> > >> > >> creating alsa driver ... hw:0|hw:0|128|2|48000|0|0|nomon|swmeter|-|32bit > >> > >> configuring for 48000Hz, period = 128 frames (2.7 ms), buffer = 2 > periods > >> > >> ALSA: final selected sample format for capture: 32bit integer > little-endian > >> > >> ALSA: use 16 periods for capture > >> > >> ALSA: final selected sample format for playback: 32bit integer > little-endian > >> > >> ALSA: use 16 periods for playback > >> > >> > >> - what are those "periods" in the ALSA lines? (2 for the PC and 16 for > the > >> BBB) ? I read a post by Jeremy Jongepier about the Cubieboard2 stating > that > >> the hardcoded values for the Cubie (Minimum number of periods was 4 and > >> minimum buffer size was 1024) where unfit for realtime operation. Why is > >> that so? > > > > Hello Gianfranco, > > > > What kind of audio interface are you using with the BBB? I'm no ALSA > > expert but it seems as if the minimum period size of the driver has been > > set to 16. If you have access to the source code of the driver you could > > experiment with lower default values for .period_bytes_min and > .periods_min. > > > > Bye, > > > > Jeremy > > > > _______________________________________________ > > Linux-audio-dev mailing list > > [email protected] > > http://lists.linuxaudio.org/listinfo/linux-audio-dev > > _______________________________________________ > Linux-audio-dev mailing list > [email protected] > http://lists.linuxaudio.org/listinfo/linux-audio-dev >
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