AudioPitchShift

AudioPitchShift[audio, r] applies pitch shifting to audio by the ratio r, shifting every frequency f to r*f.

AudioPitchShift[video, r] applies pitch shifting to the first audio track in video.

Examples

Shift pitch up by an octave:

audio = ExampleData[{"Audio", "Bird"}];
AudioPitchShift[audio, 2]

Please visit the official Wolfram Language Reference for more details.