Playing WAV sound files at different pitches

[fobbasaur]

Say you have 3 wav files {piano-c.wav, violin-c.wav, flute-c.wav} and you wanted to make an app that plays each type of wav in different pitches at semitone intervals (F(n) = 440*2^((n-40)/12) Hz, F(n±1) to get one semitone higher/lower). Would it be better to make individual files at varying pitches for each of the 3 wav files? Or is there a way to do it via the Core Library?

Thanks

[lefty]

Originally Posted by fobbasaur

Say you have 3 wav files {piano-c.wav, violin-c.wav, flute-c.wav} and you wanted to make an app that plays each type of wav in different pitches at semitone intervals (F(n) = 440*2^((n-40)/12) Hz, F(n±1) to get one semitone higher/lower). Would it be better to make individual files at varying pitches for each of the 3 wav files? Or is there a way to do it via the Core Library?

Thanks

You can do it with OpenAL AL_PITCH

[Hollance]

I wrote some code for this: SoundBankPlayer: Using OpenAL to Play Musical Instruments in Your iOS App – Hollance: Freelance iPhone + iPad Development