CODEWITHSUNDEEP
c#unity-game-enginenuget
AboMohsen
AboMohsen

Reputation: 109

GetOutputData returning 0

My purpose is just to get the voice input level

I searched and found this code - but it always return 0 whatever my voice input level - I keep shouting , but always return 0

here's the code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class mic : MonoBehaviour {
        public float sens = 100;
        public float loud = 0;
        AudioSource audio;

        void Start()
        {
            audio = GetComponent<AudioSource> ();
            audio.clip = Microphone.Start (null, true, 10, 44100);
            audio.loop = true;
            audio.mute = true;
            while (!(Microphone.GetPosition (null) > 0)) {}
            audio.Play ();
        }

        void Update()
        {
            loud = GetAvgVol () * sens;
            Debug.Log (loud); //always debug 0
        }

        float GetAvgVol()
        {
            float [] data = new float[256];
            float a = 0;
            audio.GetOutputData (data, 0);
            foreach(float s in data)
            {
                a += Mathf.Abs (s);
            }
            return a / 256;
        }
}

how to achieve my purpose inside unity?

Upvotes: 2

Views: 1002

Answers (2)

Programmer
Programmer

Reputation: 125415

Assuming there are no errors thrown by Unity in the Editor, these are the reasons why AudioSource.GetOutputData may return 0:

1.The AudioSource volume is set 0.

For example, AudioSourceInstance.volume = 0.

2.The AudioSource is muted is set true.

For example, AudioSourceInstance.mute = true;

3.There is no audio playing in the AudioSource.

For example, AudioSourceInstance.Play () is not called, AudioSourceInstance.Pause() is called or AudioSourceInstance.Stop() has been called on that AudioSource.

4.The audio file or mic is silent.

In your case, the cause is #2.

If you just want to capture data from the mic without playing it back live then see this answer that mentioned two ways to do this

Also, I suggest you replace return a / 256; with return a / 256f; in your GetAvgVol function.

Upvotes: 2

Rampartisan
Rampartisan

Reputation: 427

I'm not on a machine with unity at the moment but your input level seems like its fine.

The problem might be 

        audio.clip = Microphone.Start (null, true, 10, 44100);

You are setting the deviceName to NULL, try putting in a device name that you can discover with Microphone.devices

https://docs.unity3d.com/ScriptReference/Microphone-devices.html

Upvotes: 1

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