Play back the recorded audio?

[KevinWSteele]

Hi! Thanks so much for the example, tomisacat. However, I'm trying to play back the recorded sound from using this app. When I write code to search for the audio file that was used to record the sound, it looks like the audio file does not exist - even after recording.

Any idea how to access the recorded file?

[tomisacat]

Hi! Check the location to find whether the file exist. The file located in app sandbox like /path/to/the/app/tmp/audio.wav

[KevinWSteele]

Ok, thanks - apparently I was getting slightly different files, partly based on whether I did:
let myUrl = URL(fileURLWithPath: path)
or
let myURL = URL(string: path)!;

As long as I'm consistent and keep making sure the program is using the right file, the file does exist after recording.

However, I still can't get the recorded file to play back. I let the recording go for a few seconds and I can see that the audioQueueInputCallback method is getting called a lot. Then, I stop the recording.

However, when I try to play back the recorded file with AudioQueuePlayer ( after recording and passing the correct file into the player), there is just no sound. It looks like like audioQueueOutputCallback gets called quickly three times and then there is an error message about finding nil while unwrapping an Optional value on this line:
var status = AudioFileReadPacketData(info.pointee.mAudioFile!,

My function, which I call from the view controller after recording the file is:

func playSound() {
        let path = (NSTemporaryDirectory() as NSString).appendingPathComponent("audio.wav")
        print(path)
        let myURL = URL(string: path)!
        
        let myPlayer = AudioQueuePlayer(url: myURL)
        myPlayer?.play();
   }