我想在可视化表示中使用用户在Unity3d中输入的麦克风音量 . 所以我'd like to get a value between 0 and 1 that tell how loud the user is. I went looking for a script, but the part that handles the volume doesn' t正常工作，那部分是方法 LevelMax() . 出于某种原因， micPosiotion 永远不会高于0.我不知道 Microphone.GetPosition 除了这个之外真的做了什么：

有谁知道方法 LevelMax() 出了什么问题？我没有任何错误或任何错误 . 它正确找到我的麦克风，它正在工作 . 我测试了它 .

这是代码：

using UnityEngine;

using System.Collections;

public class MicInput : MonoBehaviour{

public float testSound;

public static float MicLoudness;

private string _device;

private AudioClip _clipRecord = new AudioClip();

private int _sampleWindow = 128;

private bool _isInitialized;

void InitMic()

{

if (_device == null) {

_device = Microphone.devices [0];

_clipRecord = Microphone.Start (_device, true, 999, 44100);

Debug.Log (_clipRecord);

}

}

void StopMicrophone()

{

Microphone.End (_device);

}

float LevelMax()

{

float levelMax = 0;

float[] waveData = new float[_sampleWindow];

int micPosition = Microphone.GetPosition (null) - (_sampleWindow + 1);

if (micPosition < 0) {

return 0;

}

_clipRecord.GetData (waveData, micPosition);

for (int i = 0; i < _sampleWindow; ++i) {

float wavePeak = waveData [i] * waveData [i];

if (levelMax < wavePeak) {

levelMax = wavePeak;

}

}

return levelMax;

}

void Update()

{

MicLoudness = LevelMax ();

testSound = MicLoudness;

}

void OnEnable()

{

InitMic ();

_isInitialized = true;

}

void OnDisable()

{

StopMicrophone ();

}

void OnDestory()

{

StopMicrophone ();

}

void OnApplicationFocus(bool focus)

{

if (focus) {

if (!_isInitialized) {

InitMic ();

_isInitialized = true;

}

}

if (!focus) {

StopMicrophone ();

_isInitialized = false;

}

}

}