How to slow down or speed up the playback of audio when using Audio Queue Services?

Question

Is that possible? How is this done in theory? Would I simply make a very small buffer packet size and then delay the playback artificially? I assume that's the low-brain way? How could I do it in such a way that the sound is smooth and doesn't suck?

score 2 · Answer 1 · answered Jan 14 '14 at 20:48

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AudioQueueSetParameter with kAudioQueueParam_PlayRate should do the trick

https://developer.apple.com/library/mac/documentation/MusicAudio/Reference/AudioQueueReference/Reference/reference.html#//apple_ref/c/func/AudioQueueSetParameter

answered Jan 14 '14 at 20:48

joels

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score 1 · Accepted Answer · edited May 23 '17 at 12:24

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Delaying playback will cause stuttering in the audio. Perhaps this question might point the way?

edited May 23 '17 at 12:24

Community

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answered May 01 '10 at 13:19

Frank Shearar

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How to slow down or speed up the playback of audio when using Audio Queue Services?

2 Answers2