CODEWITHSUNDEEP
iosswiftaudiokit
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Reputation: 31

Turn AKMicrophone work on both headphones channels

I'm faced with simple problem, on which not trivial to find an answer in google (at least for me). Working with AudioKit 4.4, I'm trying to make a microphone, output from which I can hear in both channels of my stereo headphones. I'm trying to set audioformat to AudioKit.format and AKSettings.channelCount manually, but in headphones I hear microphone only in left channel. What I'm missing?

Here simplified code with my current settings:

    AKSettings.bufferLength = .long
    AKSettings.fixTruncatedRecordings = true
    AKSettings.defaultToSpeaker = true
    AKSettings.ioBufferDuration = 0.002
    AKSettings.channelCount = 2
    AKSettings.enableRouteChangeHandling = false
    let format = AVAudioFormat(standardFormatWithSampleRate: 44100, channels: 2)
    AudioKit.format = format ?? AudioKit.format

    let mic = AKMicrophone()
    AudioKit.output = mic
    try? AudioKit.start()

As you can see, I'm just initialising AKSettings properties for audio session and create a microphone, that connects to AudioKit engine output. I suspect that AKSettings before AKSettings.channelCount = 2 doesn't play any role in this problem. But I don't understand at all, what I'm doing wrong? I'm sure, it would be a simple solution.

Upvotes: 1

Views: 188

Answers (1)

ASG
ASG

Reputation: 31

So, I have found the answer - it is class AKStereoFieldLimiter:

let mic = AKMicrophone()
let monoToStereo = AKStereoFieldLimiter(mic, amount: 1)
let micMixer = AKMixer(monoToStereo)
AudioKit.output = micMixer

Also, there may be a more simple solution in AudioKit 4.7.1 - initialisation AKMicrophone(with format: AVAudioFormat?), but I can't check it, because I'm working with AudioKit 4.4. If someone can try this method, please, leave a feedback in comment to this answer.

Upvotes: 1

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