Mute AudioListener but still process audio

Questions & Answers
1

I need to process some audio recorded from a microphone, but he is being reproduced by my application. How can I avoid that? This is my code for recording and processing the audio:

AudioSource audioSrc;
SoundTrigger trigger;
float[] spectrum = new float[1024];

AudioSource[] sources;
int srcIndex;

void Start()
{
    trigger = new SoundTrigger(4000, 620);
    GameObject a = new GameObject("AudioSource");
    audioSrc = a.AddComponent<AudioSource>();
    Instantiate(a);

    audioSrc.clip = Microphone.Start(null, true, 1000, 44100);
    while (!(Microphone.GetPosition(null) > 0)) { }

    sources = new AudioSource[1]{ audioSrc };
    srcIndex = 0;
    sources[srcIndex].Play();
}

void Update()
{
    sources[srcIndex].GetSpectrumData(spectrum, 0, FFTWindow.BlackmanHarris);
}

I tried to mute and lower the volume of the audio listener, but it doesn’t work, because then I dont have audio to process. I also tried to use 3d sound, and put the audio listener far away, but I didnt manage to do it. Is there a good solution for this?

2

I’m not the best at this sort of thing but may I suggest something.

I think the problem is you’re not calling Microphone.End(null). Another thing you can try is to move your .Play code to another function which you can trigger at a push of a button or something. One last thing is I added .playOnAwake = false, in case it is initialized with a true from Unity

Hope this helps

     AudioSource audioSrc;
     SoundTrigger trigger;
     float[] spectrum = new float[1024];
     AudioSource[] sources;
     int srcIndex;
     void Start()
     {
         trigger = new SoundTrigger(4000, 620);
        GameObject a = new GameObject("AudioSource");
        audioSrc = a.AddComponent<AudioSource>();
        Instantiate(a);
        audioSrc.playOnAwake = false;
         audioSrc.clip = Microphone.Start(null, true, 1000, 44100);
         while (!(Microphone.GetPosition(null) > 0)) { }
         // stop the recording!
        Microphone.End(null);
// consider moving this to another function (maybe one that is triggered at a push of a button or something)
         sources = new AudioSource[1]{ audioSrc };
         srcIndex = 0;
         sources[srcIndex].Play();
     }
     void Update()
     {
         sources[srcIndex].GetSpectrumData(spectrum, 0, FFTWindow.BlackmanHarris);
     }