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Generating variable frequency tones

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Generating variable frequency tones

Subject: Generating variable frequency tones
From: Remco Poelstra <email@hidden>
Date: Thu, 9 Sep 2010 21:58:45 +0200
Resent-date: Fri, 10 Sep 2010 07:20:57 +0200
Resent-from: Remco Poelstra <email@hidden>
Resent-message-id: <email@hidden>
Resent-to: email@hidden

Hi,

I'm looking for some way to generate a tone that resembles the sound of an instrument. I need precise control of the base frequency (pitch). I'm wondering what would be the best way to generate it on an iPhone. Store a file with a know frequency and resample it to the desired frequency? Synthesize a tone by calculating a bunch of sines? Doing some FFT trick on a file? If someone can give some insight into what would best fit the H/W available it would be grateful.

Kind regards,

Remco Poelstra

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