I am creating one application which requires recording voice and then funny voice will play.
Is there any library to use this work function better?
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The SpeakHere sample application provided from the SDK site has a working example of how to use the microphone to record the voice.
Now how to play funny voice.
For that there are no built-in iOS APIs that will do independent time-pitch modification.
There is open source code that implements time-pitch stretching in Audacity, but I don’t know whether this code has been ported to iOS. Same with SoundTouch.
There is a Time-Pitch Stretch Tutorial on the DSP Dimensions site.
Some more blogs on it