Is there any way to record/keep the voice of the AVSpeechSynthesizer before it being played and then applying some effects to it(as a voice file)? If not, do you know any open source alternative which we can do such thing with it's output voice? Thanks.
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try this http://stackoverflow.com/questions/20601824/avspeechsynthesizer-utterance-to-audio-file – Itai Spector May 07 '17 at 10:13
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Possible duplicate of [AVSpeechSynthesizer output as file?](http://stackoverflow.com/questions/25965601/avspeechsynthesizer-output-as-file) – McCygnus May 07 '17 at 18:50