[PD] audio problem on OSX with a particular mixer

Derek Holzer derek at umatic.nl
Thu Mar 18 22:58:26 CET 2010


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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