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Re: [PD] audio problem on OSX with a particular mixer

Derek Holzer
Thu, 18 Mar 2010 15:00:48 -0700

What is your patch doing then? Any DC offset or similar which could freak the mixer out? Did you try it with just the test tone, or a simple [osc~ 220]?

D.

On 3/18/10 10:54 PM, rene beekman wrote:
Derek,

Well, that's the thing; with any other piece of external hardware I'm having no 
problems what so ever, just with this one damn mixer....
Voodoo does sound like an option :D

Rene



On Mar 18, 2010, at 23:35, Derek Holzer wrote:

Hi Rene,

I think you can safely factor the mixer out of the equation, unless you believe 
in voodoo ;-)

Pd doesn't play well with Coreaudio or Portaudio at all, so using JACK is the 
best workaround for that. Lots of archive discussion on this topic, but no 
solutions...

Best,
Derek

On 3/18/10 8:53 PM, rene beekman wrote:
i'm running into a strange problem with a particular mixer, a behringer dx626. 
I've got the headphones/lineout of my intel macbook (running os 10.6.2) 
connected to one of the line-ins on the mixer.

audio playback through the mixer works fine from itunes or from the finder.

when i switch to pd, however, audio keeps switching on and off at a rate of 
about 2 or 3 times a second.

i've tried fiddling with the Pd settings to solve this, but have not been able 
to find a solution so far.

i'm using portaudio, sampling rate 44100, delay 50ms, no callbacks, input and 
output devices are set to built-in mic&   output.

changing any of these settings does not make any difference.

tonight i installed jack and this did solve the problem.
while i'm glad i've found a solution, i hate not understanding why it works....
anyone any suggestions or pointers? :)

--
::: derek holzer ::: http://macumbista.net :::
---Oblique Strategy # 41:
"Define an area as `safe' and use it as an anchor"



--
::: derek holzer ::: http://macumbista.net :::
---Oblique Strategy # 140:
"Reverse"

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