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pitch-shift/time-stretch

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pitch-shift/time-stretch

Subject: pitch-shift/time-stretch
From: Denise Eatherly <email@hidden>
Date: Sun, 1 Nov 2009 09:01:25 -0700

Hi,

Does anyone know of a way to get pitch-shifting and time-stretching in realtime on the iPhone? The smbPitchShift code form dspDimensions works great in the simulator, but not on the device. I also tried the code from Paul Embree's book, but it doesn't even sound good on the simulator. SoundTouch looks good, but I haven't been able to get it to work yet. Same with STK. We can shift the pitch with OpenAL, but the results are compressed - we need the duration to stay the same. We would sure love to hear about it if anyone has a solution to this problem or if Apple is about to release their audio unit for the iPhone.

Thanks for your help,
Denise
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