iOS: Pitch Shifting & Piping output from OpenAL into a buffer

Question

I have recently spotted that it is possible in iOS to use OpenAL to pitch shift.

I am looking at Hollance\'s sound bank player. it takes in 15 or so piano notes spa

Answer 1

alSourcePlayv allows you to play multiple sources concurrently - the maximum number of sources is platform dependent, but is 32 on iOS (answered on the apple core-audio list, here for completeness)