[PD] drop out free audio on windows

Hans-Christoph Steiner hans at eds.org
Sat Dec 8 06:13:54 CET 2007

that would be good to have built-in, like it is in Mac OS X, with the  
audio output started with a higher priority.  Any Windows people want  
to comment on that?


On Dec 7, 2007, at 11:41 PM, Roman Haefeli wrote:

> hi all
> every now and then i hear people complaining here in the list or on
> #dataflow in irc, that audio is affected (drop outs), when doing some
> gui stuff in pd on windows. i don't know about osx, but on linux, i
> never experienced, that the gui was the cause for drop-outs, even  
> if it
> consumes a lot of cpu power. i assume, this is because the gui-process
> and the dsp engine are started with different priorities on linux.
> today i wanted to test one of my patches on windows. it is part of the
> patch, that a visible array is updated every 100ms. indeed, i got a
> drop-out on every update, so that my patch sounded like an uzi.  
> turning
> the array update off removed also the drop-outs. i found out, that
> 'pd.com' and 'wish84.exe' were running with the same priority, so i  
> set
> 'pd.com' in the windows task manager to 'realtime priority'. as usual,
> windows pops-up a message saying that this is dangerous and might harm
> the system. however, after that i could turn on the array update  
> without
> getting drop-outs anymore.
> i just wanted all the windows user to let know, that there _is_ a  
> way to
> optimize your pd. probably someone with a deeper knowledge about  
> windows
> than me knows a way, how to set priorities permanently, so that it
> doesn't need to be changed in taskmanager after each launch of pd (?).
> i tested with:
> windows xp home
> pd vanilla 0.40.2
> roman
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