Is it possible to change the playback speed?

[Wyctus]

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Can I change the playback speed directly through the library, or should I implement it myself?

Thank you for the help and the great library!

[CasperPas]

I think you implement it yourself would be a better solution. You can apply multiple filters to the raw audio data before sending it to the player.

Cheers!

[Wyctus]

Thank you! But I think changing the playback speed is not a raw audio manipulation, but some setting on the underlying Android/iOS player. So maybe it would be a nice feature to have on this library.

What do you think?

[CasperPas]

I think the easiest way to achieve that without any raw data manipulation is setting the player's frequency higher or lower the recording frequency. However, that would cause a pitch-changed side effect. I'll look into this anyway, hope it wouldn't add too much overhead to the lib 😁

[Wyctus]

On Android, you can use the setPlaybackParams(PlaybackParams params) method of the Audiotrack to change the speed, without affecting the pitch. I guess something similar exists on iOS too.

Update: On iOS you can use the mAudioEngine.connect(...) method to attach an AVAudioUnitVarispeed.

Hope this helps!