AudioKit: mic = AKMicrophone() throws error

I have MacOS 10.14.1, Xcode 10.0, and the latest version of AudioKit. I was trying out the microphone analysis (https://audiokit.io/examples/MicrophoneAnalysis/) but I keep on getting an error. I used breakpoints and found that the error is on the line mic = AKMicrophone()

Here is my code:

import UIKit

import AudioKit



class ViewController: UIViewController {



    @IBOutlet weak var frequencyLabel: UILabel!



    var mic: AKMicrophone!             

    var tracker: AKFrequencyTracker!

    var silence: AKBooster!

    var frequency = 0.0



    override func viewDidLoad() {

        super.viewDidLoad()



        AKSettings.audioInputEnabled = true

        mic = AKMicrophone()                  //Error here

        tracker = AKFrequencyTracker(mic)

        silence = AKBooster(tracker, gain: 0)



    }



    override func viewDidAppear(_ animated: Bool) {

        super.viewDidAppear(animated)



        AudioKit.output = silence



        do {

            try AudioKit.start()

        } catch {

            print("AudioKit did not start!")

        }



        Timer.scheduledTimer(timeInterval: 0.1,

                             target: self,

                             selector: #selector(ViewController.updateUI),

                             userInfo: nil,

                             repeats: true)



    }



    @objc func updateUI() {

        let temp = tracker.frequency

        frequency = temp

        print("Frequency: " + String(frequency))

        frequencyLabel.text = String(format: "%0.1f", temp)

    }





}

I'm not sure how to fix this error, and Google yielded nothing. The error that shows up is

AVAEInternal.h:70:_AVAE_Check: required condition is false: [AVAudioIONodeImpl.mm:911:SetOutputFormat: (format.sampleRate == hwFormat.sampleRate)]



*** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: format.sampleRate == hwFormat.sampleRate'

Thanks.

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

add a comment |

Here is my code:

import UIKit

import AudioKit



class ViewController: UIViewController {



    @IBOutlet weak var frequencyLabel: UILabel!



    var mic: AKMicrophone!             

    var tracker: AKFrequencyTracker!

    var silence: AKBooster!

    var frequency = 0.0



    override func viewDidLoad() {

        super.viewDidLoad()



        AKSettings.audioInputEnabled = true

        mic = AKMicrophone()                  //Error here

        tracker = AKFrequencyTracker(mic)

        silence = AKBooster(tracker, gain: 0)



    }



    override func viewDidAppear(_ animated: Bool) {

        super.viewDidAppear(animated)



        AudioKit.output = silence



        do {

            try AudioKit.start()

        } catch {

            print("AudioKit did not start!")

        }



        Timer.scheduledTimer(timeInterval: 0.1,

                             target: self,

                             selector: #selector(ViewController.updateUI),

                             userInfo: nil,

                             repeats: true)



    }



    @objc func updateUI() {

        let temp = tracker.frequency

        frequency = temp

        print("Frequency: " + String(frequency))

        frequencyLabel.text = String(format: "%0.1f", temp)

    }





}

I'm not sure how to fix this error, and Google yielded nothing. The error that shows up is

AVAEInternal.h:70:_AVAE_Check: required condition is false: [AVAudioIONodeImpl.mm:911:SetOutputFormat: (format.sampleRate == hwFormat.sampleRate)]



*** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: format.sampleRate == hwFormat.sampleRate'

Thanks.

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

add a comment |

Here is my code:

import UIKit

import AudioKit



class ViewController: UIViewController {



    @IBOutlet weak var frequencyLabel: UILabel!



    var mic: AKMicrophone!             

    var tracker: AKFrequencyTracker!

    var silence: AKBooster!

    var frequency = 0.0



    override func viewDidLoad() {

        super.viewDidLoad()



        AKSettings.audioInputEnabled = true

        mic = AKMicrophone()                  //Error here

        tracker = AKFrequencyTracker(mic)

        silence = AKBooster(tracker, gain: 0)



    }



    override func viewDidAppear(_ animated: Bool) {

        super.viewDidAppear(animated)



        AudioKit.output = silence



        do {

            try AudioKit.start()

        } catch {

            print("AudioKit did not start!")

        }



        Timer.scheduledTimer(timeInterval: 0.1,

                             target: self,

                             selector: #selector(ViewController.updateUI),

                             userInfo: nil,

                             repeats: true)



    }



    @objc func updateUI() {

        let temp = tracker.frequency

        frequency = temp

        print("Frequency: " + String(frequency))

        frequencyLabel.text = String(format: "%0.1f", temp)

    }





}

I'm not sure how to fix this error, and Google yielded nothing. The error that shows up is

AVAEInternal.h:70:_AVAE_Check: required condition is false: [AVAudioIONodeImpl.mm:911:SetOutputFormat: (format.sampleRate == hwFormat.sampleRate)]



*** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: format.sampleRate == hwFormat.sampleRate'

Thanks.

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

Here is my code:

import UIKit

import AudioKit



class ViewController: UIViewController {



    @IBOutlet weak var frequencyLabel: UILabel!



    var mic: AKMicrophone!             

    var tracker: AKFrequencyTracker!

    var silence: AKBooster!

    var frequency = 0.0



    override func viewDidLoad() {

        super.viewDidLoad()



        AKSettings.audioInputEnabled = true

        mic = AKMicrophone()                  //Error here

        tracker = AKFrequencyTracker(mic)

        silence = AKBooster(tracker, gain: 0)



    }



    override func viewDidAppear(_ animated: Bool) {

        super.viewDidAppear(animated)



        AudioKit.output = silence



        do {

            try AudioKit.start()

        } catch {

            print("AudioKit did not start!")

        }



        Timer.scheduledTimer(timeInterval: 0.1,

                             target: self,

                             selector: #selector(ViewController.updateUI),

                             userInfo: nil,

                             repeats: true)



    }



    @objc func updateUI() {

        let temp = tracker.frequency

        frequency = temp

        print("Frequency: " + String(frequency))

        frequencyLabel.text = String(format: "%0.1f", temp)

    }





}

I'm not sure how to fix this error, and Google yielded nothing. The error that shows up is

AVAEInternal.h:70:_AVAE_Check: required condition is false: [AVAudioIONodeImpl.mm:911:SetOutputFormat: (format.sampleRate == hwFormat.sampleRate)]



*** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: format.sampleRate == hwFormat.sampleRate'

Thanks.

swift xcode audiokit

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

edited Nov 12 '18 at 14:31

asked Nov 12 '18 at 14:15

Jerry Qian

113

asked Nov 12 '18 at 14:15

Jerry Qian

113

asked Nov 12 '18 at 14:15

Jerry Qian

113

add a comment |

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