[PD] wierd feedback popping with pd/freebob/jack/rt

Hans-Christoph Steiner hans at eds.org
Tue May 20 16:59:10 CEST 2008

Which version of Pd is this?  There are large differences, so you  
need to be specific.


On May 20, 2008, at 2:15 PM, Rich E wrote:

> Hi,
> I have been having this problem off and on for a while, but never  
> thought it would do any good to post on this forum about it.   
> However, I have a lead now.
> I have an Edirol FA-101 hooked up to pd in Ubuntu Gutsy, with the  
> rt kernel.  If pd is running by itself, everything sounds great.   
> If jack is running in non-realtime and there are lots of things  
> going on, everything sounds great except there are big pauses in  
> midi/audio throughput.  If jack is running in realtime everything  
> BUT pd sounds great, while pd produces feint pops, with feedback.
> And what I just noticed today, if I start another JACK application  
> afterwards, the pops go away and everything is runnnig smooth in  
> realtime.  I don't know if it is just any application, but what I  
> am explaining happened when I opened audacity to try to record the  
> output of pd's wierdness.
> I've only had this issue with pd.  Does this make sense to anyone?
> -rich
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