audio - Change the «voice» played with a button in iOS app -

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i have soundboard app says phrases, want able change male/female voice, thing have no idea how make this. appreciated.

i'm using avfoundation/avaudioplayer play sounds.

thank you!

can bit hard !

you need change pitch of voices, if raise have higher pitch (can defined female), if decrease pitch give low sound (can defined male)!

the simplest way playing áudio in different sample rate, change speed of audio :-(

the hard , right way build pitch shift algorithm, can done in time domain (psola, sola, wsola) or in frequency domain (phase vocoder) !

some of these techniques can disfigure original voice (can change phase , envelope) looking artificial, can especific question methods in https://dsp.stackexchange.com/ more detailed answer !


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