关于对音频的合并，左右声道的分离以及播放的操作

/**

* 查看音频各项参数

* @throws IOException

* @throws ReadOnlyFileException

* @throws TagException

* @throws InvalidAudioFrameException

*/

@ResponseBody

@RequestMapping("/")

public void checkAudioParam() throws IOException, ReadOnlyFileException, TagException, InvalidAudioFrameException {

File originPath = new File("E:/audio/visit/origin/少侠不用刀_(剑网3九周年翻唱丐太ver)-洛少爷-70600494.mp3");

File leftPath = new File("E:/audio/visit/left/");

File rightPath = new File("E:/audio/visit/right/");

RandomAccessFile rdfOrigin = null;

RandomAccessFile rdfLeft = null;

RandomAccessFile rdfRight = null;

// rdfOrigin = new RandomAccessFile(originPath,"r");

rdfLeft = new RandomAccessFile(leftPath,"r");

rdfRight = new RandomAccessFile(rightPath,"r");

MP3File file = new MP3File(originPath);

MP3AudioHeader header = file.getMP3AudioHeader();

("时长: " + ()); //获得时长

("比特率: " + ()); //获得比特率

("音轨长度: " + ()); //音轨长度

("格式: " + ()); //格式，例 MPEG-1

("声道: " + ()); //声道

("采样率: " + ()); //采样率

("MPEG: " + ()); //MPEG

("MP3起始字节: " + 3StartByte()); //MP3起始字节

("精确的音轨长度: " + ()); //精确的音轨长度

// ("声音尺寸: " + toInt(read(rdfOrigin, 4, 4))); // 声音尺寸

// ("音频格式 1 = PCM: " + toShort(read(rdfOrigin, 20, 2))); // 音频格式 1 = PCM

// ("声道: " + toShort(read(rdfOrigin, 22, 2))); // 1 单声道 2 双声道

// ("采样率: " + toInt(read(rdfOrigin, 24, 4))); // 采样率、音频采样级别 8000 = 8KHz

// ("每秒波形数量: " + toInt(read(rdfOrigin, 28, 4))); // 每秒波形的数据量

// ("采样帧大小: " + toShort(read(rdfOrigin, 32, 2))); // 采样帧的大小

// ("采样位数: " + toShort(read(rdfOrigin, 34, 2))); // 采样位数

("---------------------------------------------------Origin-left数据分割线-----------------------------------------------");

("声音尺寸: " + toInt(read(rdfLeft, 4, 4))); // 声音尺寸

("音频格式 1 = PCM: " + toShort(read(rdfLeft, 20, 2))); // 音频格式 1 = PCM

("声道: " + toShort(read(rdfLeft, 22, 2))); // 1 单声道 2 双声道

("采样率: " + toInt(read(rdfLeft, 24, 4))); // 采样率、音频采样级别 8000 = 8KHz

("每秒波形数量: " + toInt(read(rdfLeft, 28, 4))); // 每秒波形的数据量

("采样帧大小: " + toShort(read(rdfLeft, 32, 2))); // 采样帧的大小

("采样位数: " + toShort(read(rdfLeft, 34, 2))); // 采样位数

("---------------------------------------------------left-right数据分割线-----------------------------------------------");

("声音尺寸: " + toInt(read(rdfRight, 4, 4))); // 声音尺寸

("音频格式 1 = PCM: " + toShort(read(rdfRight, 20, 2))); // 音频格式 1 = PCM

("声道: " + toShort(read(rdfRight, 22, 2))); // 1 单声道 2 双声道

("采样率: " + toInt(read(rdfRight, 24, 4))); // 采样率、音频采样级别 8000 = 8KHz

("每秒波形数量: " + toInt(read(rdfRight, 28, 4))); // 每秒波形的数据量

("采样帧大小: " + toShort(read(rdfRight, 32, 2))); // 采样帧的大小

("采样位数: " + toShort(read(rdfRight, 34, 2))); // 采样位数

// rdfOrigin.close();

rdfLeft.close();

rdfRight.close();

}

public static int toInt(byte[] b) {

return (((b[3] & 0xff) << 24) + ((b[2] & 0xff) << 16) + ((b[1] & 0xff) << 8) + ((b[0] & 0xff) << 0));

// return ((b[3] << 24) + (b[2] << 16) + (b[1] << 8) + (b[0] << 0));

}

public static short toShort(byte[] b) {

return (short)(((b[1] & 0xff) << 8) + ((b[0] & 0xff) << 0));

// return (short)((b[1] << 8) + (b[0] << 0));

}

public static byte[] read(RandomAccessFile rdf, int pos, int length) throws IOException {

(pos);

byte result[] = new byte[length];

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

result[i] = ();

}

return result;

}