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Re: DLSMusicDevice rendering and performance
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Re: DLSMusicDevice rendering and performance


  • Subject: Re: DLSMusicDevice rendering and performance
  • From: Chris Rogers <email@hidden>
  • Date: Wed, 2 Jul 2003 12:05:12 -0700

Yasir, I'd especially try playing with the CPULoad property as Bill suggests.
What kind of a sample bank is this? Is it a very large one??
The synth currently doesn't handle very large sample banks as well as
it could - glitches may be heard...

Chris Rogers
Core Audio
Apple Computer


I'd set the sample rate to 22050Hz

If you take the internal reverb off, then you lose substantially more quality of the output. If you set the CPULoad property to say 0.7, then the note dropping should kick in and turn off quiet notes, and also try tweaking the render quality property..

This must be both a very large sound bank and a dense MIDI file? If so, then you should also look at scaling these decisions based on CPU speed - If i've got a G5 (which I haven't, but if I did:), then I'd want to hear this in all its glory wouldn't I?

Bill

On Wednesday, July 2, 2003, at 10:46 AM, Jeremy Sagan wrote:

Yasir,

Try rendering on buss 1 (not 0) with the reverb off and turn quality to low.

Jeremy

On Wednesday, July 2, 2003, at 05:10 AM, Yasir Assam wrote:

I keep getting glitches when playing through the DLSMusicDevice and I'm sure
this is because it's overloading the CPU.

What can I do to reduce the amount of CPU time used by this AU? I've already
reduced the sample rate from the default 44.1 KHz to a much lower value, and
this has helped, but can I do more? I need to make sure that playback always
sounds 'clean' - no stutters or gaps.

Thanks,
Yasir Assam
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References: 
 >Re: DLSMusicDevice rendering and performance (From: Bill Stewart <email@hidden>)

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