Re: AudioToolbox Pitch Bend?
Re: AudioToolbox Pitch Bend?
- Subject: Re: AudioToolbox Pitch Bend?
- From: Chunk 1978 <email@hidden>
- Date: Mon, 30 Nov 2009 12:39:18 -0500
thanks. i'm going to check out apple's iPhoneMultichannelMixerText
sample code. i assume the sample code shows how to change volume for
each track (audio-in / volume / audio-out), so i'm hoping replacing
volume for a pitch shift won't be too difficult..
On Mon, Nov 30, 2009 at 12:14 PM, Jens Alfke <email@hidden> wrote:
>
> 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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