[PlanetCCRMA] [PD] audio breaking

Ricardo Lameiro ricardolameiro at gmail.com
Thu Mar 4 06:41:43 PST 2010


I thinj he is using realtime kernel, as he is running jack with the -R flag
(reatime) otherwise jack wouldn even start.

2010/3/4 Pierre Massat <pimassat at gmail.com>

> Are you using a realtime kernel?
>
> 2010/3/4 Oded Ben-Tal <oded at ccrma.stanford.edu>
>
> I'm encountering bad audio behvaiour with pd+jack. Pd is reporting DIO
>> errors even without any patch open. When I open one of the simple example
>> patches I get very frequent breaks in the audio sometime these are even at a
>> regular rate (around 120 bpm).
>>
>> I'm using FC10 with jack and a firewire soundcard.
>> I'm starting jack with:
>> /usr/bin/jackd -R -t10000 -dfirewire -r48000 -p256 -n3 -i2 -o6
>> (also tried p128 & 512).
>>
>> I can play soundfiles with no problems using snd so it seems the problem
>> might involve some interaction between pd & jack. I don't get this audio
>> problem when I'm using pd with a USB soundcard (without jack) on the same
>> machine.
>> Any ideas how to track the problem and (hopefully) fix it?
>>
>> Oded
>>
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>
>
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