AVAudioEngine inputNode installTap crash when restarting recording

Question

I am implementing Speech Recognition in my app. When I first present the view controller with the speech recognition logic, everything works fine. However, when I try presen

Answer 1

There are two possible ways to solve this problem.

1. Check inputFormat.channelCount. It may be throwing the error because the mic is in use in another application or somewhere else you yours.

if(inputNode.inputFormat(forBus: 0).channelCount == 0){
    NSLog("Not enough available inputs!")
    return
}

2. Try to reset the audioEngine.

audioEngine.reset()