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in the init method i use

audioEngine = AVAudioEngine()

to init my audioEngine and then after button "record" is click i start my engine..

    audioEngine.prepare()
    do{
        try audioEngine.start()
    }catch {
        print("audioEngine start failed")
    }

but i comes to an error error : libc++abi.dylib: terminating with uncaught exception of type NSException

Osman
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  • Have you attached `AVAudioPlayerNode`'s to it? This is how I'm starting my audioEngine in a watchos3 app http://pastebin.com/Xf7Bi3ru EDIT: Added pastebin link for formatting. – ApperleyA Oct 06 '16 at 17:31

0 Answers0