AVAudioPlayer: How to Change the Playback Speed of Audio?

iphone avaudioplayer
jecob picture jecob · Feb 28, 2010 · Viewed 17.2k times · Source

I want to control the playback speed of audio in AVAudioplayer. Is this possible? If so, how would you do it?

Answer

james shen picture james shen · Jan 8, 2013

Now it is possible to change the playback speed.

Sample code:

player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&err];
player.volume = 0.4f;
player.enableRate = YES; //<--
[player prepareToPlay];
[player setNumberOfLoops:0];
player.rate = 2.0f; //<-- Playback Speed
[player play];

enableRate is set to YES and you can change it.

See more in the docs.

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