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Re: AudioToolbox Pitch Bend?
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Re: AudioToolbox Pitch Bend?


  • Subject: Re: AudioToolbox Pitch Bend?
  • From: Jens Alfke <email@hidden>
  • Date: Mon, 30 Nov 2009 09:14:15 -0800

On Nov 30, 2009, at 9:04 AM, Chunk 1978 wrote:

> is it possible to bend the pitch of a sound using AudioToolbox?

Nope. For that you need to use AudioUnits; there's a built-in unit that will do time/pitch shifting.

> how can i accomplish a pitch bend of a live running sound?

Basically you'd create an AUGraph that looks like
	audio-in ---> pitch-shifter ---> audio-out

CoreAudio is kind of involved :( but there's a bunch of C++ sample code and utilities in /Developer/Examples/CoreAudio/. If you run into trouble, the coreaudio-api list is the right place to ask questions.

—Jens_______________________________________________

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