any way to export wav from unity

[kilik]

i try this but somethink's wrong

public static void ExportWAV(AudioClip audioClip, string wavFilename)
{
FileStream output = new FileStream(wavFilename, FileMode.Create);
BinaryWriter binaryWriter = new BinaryWriter(output);
binaryWriter.Write(Encoding.ASCII.GetBytes("RIFF"));
binaryWriter.Write(LittleEndianBinary(36 + audioClip.samples * 2));
binaryWriter.Write(Encoding.ASCII.GetBytes("WAVE"));
binaryWriter.Write(Encoding.ASCII.GetBytes("fmt "));
binaryWriter.Write(LittleEndianBinary(16));
binaryWriter.Write(LittleEndianBinary(1));
binaryWriter.Write(LittleEndianBinary(1));
binaryWriter.Write(LittleEndianBinary(audioClip.frequency ));
binaryWriter.Write(LittleEndianBinary(audioClip.frequency * 2));
binaryWriter.Write(LittleEndianBinary(2));
binaryWriter.Write(LittleEndianBinary(16));
binaryWriter.Write(Encoding.ASCII.GetBytes("data"));
binaryWriter.Write(LittleEndianBinary(audioClip.samples * 2));
float[] array = new float[audioClip.samples];
audioClip.GetData(array, 0);
bool flag = false;
float num = 0f;
for (int i = 0; i < audioClip.samples; i++)
{
float num2 = array * 32767f;
if (num2 > 32767f)
{
flag = true;
num = Mathf.Max(num, num2 - 32767f);
num2 = 32767f;
}
if (num2 < -32768f)
{
flag = true;
num = Mathf.Max(num, -32768f - num2);
num2 = -32768f;
}
short value = Convert.ToInt16(num2);
binaryWriter.Write(LittleEndianBinary(value));
}
binaryWriter.Close();
if (flag)
{
int num3 = Mathf.Min(Mathf.Abs(-32768), 32767);
float num4 = num * 100f / ((float)num3 + num);
Debug.LogWarning(string.Format("Sample overflow while exporting WAV: Reduce volume by about {0}% to avoid data loss!", num4));
}
}

private static byte[] LittleEndianBinary(int value)
{
byte[] bytes = BitConverter.GetBytes(value);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return bytes;
}

private static byte[] LittleEndianBinary(short value)
{
byte[] bytes = BitConverter.GetBytes(value);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return bytes;
}