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Re: Preserve pitch
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Re: Preserve pitch

  • Subject: Re: Preserve pitch
  • From: Cynthia Bruyns <email@hidden>
  • Date: Tue, 31 May 2005 23:59:11 -0700
Hello all,

I am new to Core Audio and would like to take a movies sound and stretch the duration preserving pitch.
I understand Tiger has an audio unit for this, but I don't know its subtype.

aufx tmpt appl  -  Apple: AUPitch

Presumably I have to start an audio extraction session, feed the data to the audio unit and write to a file. What is the simplest way to write to a file? 
Does an audio unit exist that writes to a file?

This thread has some good pointers: http://lists.apple.com/archives/Coreaudio-api/2005/May/msg00251.html

BTW, I don't think such a thing as an movie audio addition API exists, does it? So I will have to copy the sound file to the movie in the end.

Or you could use SoundTrack Pro and use the plug-in in the movie editing environment. 
http://www.apple.com/finalcutstudio/soundtrackpro/


TIA,

Jan
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