Android wav头添加

private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,

long totalDataLen, long longSampleRate, int channels, long byteRate)

throws IOException {

byte[] header = new byte[44];

header[0] = 'R'; // RIFF/WAVE header

header[1] = 'I';

header[2] = 'F';

header[3] = 'F';

header[4] = (byte) (totalDataLen & 0xff);

header[5] = (byte) ((totalDataLen >> 8) & 0xff);

header[6] = (byte) ((totalDataLen >> 16) & 0xff);

header[7] = (byte) ((totalDataLen >> 24) & 0xff);

header[8] = 'W';

header[9] = 'A';

header[10] = 'V';

header[11] = 'E';

header[12] = 'f'; // 'fmt ' chunk

header[13] = 'm';

header[14] = 't';

header[15] = ' ';

header[16] = 16; // 4 bytes: size of 'fmt ' chunk

header[17] = 0;

header[18] = 0;

header[19] = 0;

header[20] = 1; // format = 1

header[21] = 0;

header[22] = (byte) channels;

header[23] = 0;

header[24] = (byte) (longSampleRate & 0xff);

header[25] = (byte) ((longSampleRate >> 8) & 0xff);

header[26] = (byte) ((longSampleRate >> 16) & 0xff);

header[27] = (byte) ((longSampleRate >> 24) & 0xff);

header[28] = (byte) (byteRate & 0xff);

header[29] = (byte) ((byteRate >> 8) & 0xff);

header[30] = (byte) ((byteRate >> 16) & 0xff);

header[31] = (byte) ((byteRate >> 24) & 0xff);

header[32] = (byte) (channels * 16 / 8); // block align

header[33] = 0;

header[34] = 16; // bits per sample

header[35] = 0;

header[36] = 'd';

header[37] = 'a';

header[38] = 't';

header[39] = 'a';

header[40] = (byte) (totalAudioLen & 0xff);

header[41] = (byte) ((totalAudioLen >> 8) & 0xff);

header[42] = (byte) ((totalAudioLen >> 16) & 0xff);

header[43] = (byte) ((totalAudioLen >> 24) & 0xff);

out.write(header, 0, 44);

}