[PD] Pd-extended 0.42.5 Lucid - Audio Settings / Delay - not working!

[Ingo Scherzinger]

Hi Tim,

usually I get better performance with oss. When I use alsa I have to start
it with the -realtime and - nosleep flag to get the same performance.
Unfortunately this makes the gui unmanageable from time to time. That's why
I prefere oss. Leaving out the -nosleep flag helps somehow but seems not
quite as fast.

Alsa actually lets me change the latency, though.

When starting with oss and a higher latency than 8 ms I get the message

"OSS: requested audio buffer size 12168 limited to 4096" (the actual number
vary!)

(BTW I am always starting pd from the terminal with root rights)

Could it be that there are some general audio settings in the ubuntu system
that I have to change in order to increase the maximum buffer size? Does
anybody know where this could be?

Ingo

________________________________________
Von: tim vets [mailto:timvets at gmail.com] 
Gesendet: Mittwoch, 16. Februar 2011 19:29
An: Ingo Scherzinger
Cc: pd-list at iem.at
Betreff: Re: [PD] Pd-extended 0.42.5 Lucid - Audio Settings / Delay - not
working!


2011/2/16 Ingo Scherzinger <ingo at miamiwave.com>
Hi,

I just wanted to change the delay in the audio settings for a higher latency
to avoid glitches and dropouts in my current patch.
Unfortunately there is no effect when I change the delay time.

Even setting it to 100 or 300 ms results in 0 delay (+ the usual os delay,
of course)!

I am using the first release version of 0.42.5 on Lucid with oss.

Hi Ingo,
Is there a reason why you use oss and not alsa or jack?
I wanted to test what you describe, but my soundcard apparently doesn't even
show up in Media>OSS...
when I try switching to OSS i get this:
/dev/dsp (read/write): No such file or directory
(now will try write-only...)
/dev/dsp (writeonly): No such file or directory
/dev/dsp (readonly): No such file or directory
audio I/O stuck... closing audio

alsa works.
ubuntu Maverick, Pd version 0.42-6

Tim
 
Does anybody know if there was a bug about the audio settings in that
version?

Everything is working as expected on windows xp with (probably) the same
version as well as with the 0.43 version on windows.
(I havn't tested 0.43 on Linux, yet)

Ingo


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