Programmatically increase the pitch of an array of audio samples

Question

Hello kind people of the audio computing world,

I have an array of samples that respresent a recording. Let us say that it is 5 seconds at 44100Hz. How would I play

Answer 1

This helped me with resampling, which is same thing you need just looked from the opposite side.

If you can't find code, ping me, I have a nice C routine for this.