Android：使用 audiorecord 类录制音频播放快进
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【中文标题】Android：使用 audiorecord 类录制音频播放快进【英文标题】：Android : recording audio using audiorecord class play as fast forwarded 【发布时间】：2012-08-08 10:34:33 【问题描述】：我正在尝试将音频和存储到 SD 卡以及发送到服务器。当我尝试播放录制的声音时，它正在播放，但不是我录制的。如果我录制语音 10 分钟，它将播放 4 分钟，即有人按下快进按钮并发出一些嘈杂的声音。我没有找到我要去的地方。谁能告诉我如何解决这个问题（应该播放我录制的内容，即录制 10 分钟，然后只播放 10 分钟）。
这是代码..抱歉发布批量代码..
public class Audio_Call extends Activity
private static final int RECORDER_BPP = 16;
private static final String AUDIO_RECORDER_FILE_EXT_WAV = "AudioRecorder.wav";
private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder";
private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw";
private static final int RECORDER_SAMPLERATE = 8000;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private AudioRecord recorder = null;
// private int bufferSize = 200000;
private int bufferSize = 0;
short[] buffer;
private Thread recordingThread = null;
private boolean isRecording = false;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.audio_call);
setButtonHandlers();
enableButtons(false);
bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE,
RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);
private void setButtonHandlers()
((Button) findViewById(R.id.btnStart)).setOnClickListener(btnClick);
((Button) findViewById(R.id.btnStop)).setOnClickListener(btnClick);
private void enableButton(int id, boolean isEnable)
((Button) findViewById(id)).setEnabled(isEnable);
private void enableButtons(boolean isRecording)
enableButton(R.id.btnStart, !isRecording);
enableButton(R.id.btnStop, isRecording);
// stores the file into the SDCARD
private String getFilename()
System.out.println("---3---");
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
if (!file.exists())
file.mkdirs();
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_FILE_EXT_WAV);
// stores the file into the SDCARD
private String getTempFilename()
// Creates the temp file to store buffer
System.out.println("---4-1--");
String filepath = Environment.getExternalStorageDirectory().getPath();
System.out.println("---4-2--");
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
System.out.println("---4-3--");
if (!file.exists())
file.mkdirs();
File tempFile = new File(filepath, AUDIO_RECORDER_TEMP_FILE);
System.out.println("---4-4--");
if (tempFile.exists())
tempFile.delete();
System.out.println("---4-5--");
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
private void startRecording()
int buffercount = 4088 / bufferSize;
if (buffercount < 1)
buffercount = 1;
recorder = new AudioRecord(MediaRecorder.Audiosource.MIC,
RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING, bufferSize * buffercount);
buffer = new short[4088];
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable()
@Override
public void run()
writeAudioDataToFile();
, "AudioRecorder Thread");
recordingThread.start();
private void writeAudioDataToFile()
// Write the output audio in byte
byte data[] = new byte[bufferSize];
String filename = getTempFilename();
//
FileOutputStream os = null;
//
try
//
os = new FileOutputStream(filename);
//
catch (FileNotFoundException e)
e.printStackTrace();
int read = 0;
// if (null != os)
while (isRecording)
// gets the voice output from microphone to byte format
recorder.read(buffer, 0, buffer.length);
// read = recorder.read(data, 0, 6144);
if (AudioRecord.ERROR_INVALID_OPERATION != read)
try
// // writes the data to file from buffer
// // stores the voice buffer
// short[] shorts = new short[bytes.length/2];
// to turn bytes to shorts as either big endian or little
// endian.
// ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(shorts);
// to turn shorts back to bytes.
byte[] bytes2 = new byte[buffer.length * 2];
ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN)
.asShortBuffer().put(buffer);
os.write(bytes2);
SendAudio(buffer);
catch (IOException e)
e.printStackTrace();
try
os.close();
catch (IOException e)
e.printStackTrace();
//
private void stopRecording()
// stops the recording activity
if (null != recorder)
isRecording = false;
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
// copy the recorded file to original copy & delete the recorded copy
copyWaveFile(getTempFilename(), getFilename());
deleteTempFile();
private void deleteTempFile()
File file = new File(getTempFilename());
file.delete();
private void copyWaveFile(String inFilename, String outFilename)
System.out.println("---8---");
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = RECORDER_SAMPLERATE;
int channels = 2;
long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;
byte[] data = new byte[bufferSize];
try
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
AppLog.logString("File size: " + totalDataLen);
WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
longSampleRate, channels, byteRate);
byte[] bytes2 = new byte[buffer.length * 2];
ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN)
.asShortBuffer().put(buffer);
while (in.read(bytes2) != -1)
out.write(bytes2);
in.close();
out.close();
catch (FileNotFoundException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels, long byteRate)
throws IOException
System.out.println("---9---");
byte[] header = new byte[4088];
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) (2 * 16 / 8); // block align
header[33] = 0;
header[34] = RECORDER_BPP; // 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, 4088);
private View.OnClickListener btnClick = new View.OnClickListener()
@Override
public void onClick(View v)
switch (v.getId())
case R.id.btnStart:
AppLog.logString("Start Recording");
enableButtons(true);
startRecording();
break;
case R.id.btnStop:
AppLog.logString("Stop Recording");
enableButtons(false);
stopRecording();
break;
;
public void SendAudio(final short data[])
Thread thrd = new Thread(new Runnable()
String LOG_TAG = null;
long SAMPLE_INTERVAL = 10;
@Override
public void run()
Log.e(LOG_TAG, "start send thread, thread id: ");
long file_size = 0;
int bytes_read = 0;
int bytes_count = 0;
// byte[] buf = new byte[bufferSize];
// buf = data;
try
// byte [] b = "192.168.1.40".getBytes();
byte[] b = new byte[] (byte) 192, (byte) 168, (byte) 1,
(byte) 39 ;
InetAddress addr = InetAddress.getLocalHost();
InetAddress addr1 = InetAddress.getByAddress(b);
HttpClient httpclient = new DefaultHttpClient();
ServerUrl url = new ServerUrl();
String url_page = ServerUrl.url_audio;
// String value = new String(buf);
// System.out.println("mmdata--------- " + value);
HttpPost httppost = new HttpPost(url_page);
// Unix time stamp
long unixTime = System.currentTimeMillis() / 1000L;
String timestamp = String.valueOf(unixTime);
// Json Format
JSONObject holder = new JSONObject();
JSONArray jArray = new JSONArray();
try
holder.put("UserId", "1");
holder.put("Timestamp", timestamp);
// holder.put("length", value.length());
for (int i = 0; i < buffer.length; i++)
jArray.put(i, buffer[i]);
holder.put("MMData", jArray);
System.out.println("ARRAYYYY" + jArray);
catch (JSONException e1)
e1.printStackTrace();
try
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
2);
nameValuePairs.add(new BasicNameValuePair("MMData",
jArray.toString()));
httppost.setEntity(new UrlEncodedFormEntity(
nameValuePairs));
StringEntity se = new StringEntity(jArray.toString());
se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE,
"application/json"));
httppost.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
catch (ClientProtocolException e)
System.out.println("-------13");
e.printStackTrace();
catch (IOException e)
System.out.println("-------14");
e.printStackTrace();
catch (Exception e)
System.out.println("-------15");
System.out.println("Exception");
e.printStackTrace();
bytes_count += bytes_read;
Log.d(LOG_TAG, "bytes_count : " + bytes_count);
Thread.sleep(SAMPLE_INTERVAL, 0);
catch (InterruptedException ie)
Log.e(LOG_TAG, "InterruptedException");
catch (UnknownHostException uhe)
Log.e(LOG_TAG, "UnknownHostException");
catch (IOException ie)
Log.e(LOG_TAG, "IOException");
// end run
);
thrd.start();
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
if (keyCode == KeyEvent.KEYCODE_BACK)
finish();
return super.onKeyDown(keyCode, event);
将不胜感激..我已经对此进行了搜索，但没有得到适当的解决方案..我正在尝试所有其他可能性，但没有成功。
非常感谢
【问题讨论】：
你能展示你如何调用 WriteWaveFileHeader 吗？ IE。您传递给它的参数的值是多少？ @Michael 我已经更新了代码.. 生成的文件大小是否符合您的预期？如果您在音频编辑器（如 Audacity）中打开原始数据，您应该能够通过尝试不同的导入设置来找出采样率/#channels 的真正含义，直到您正确播放为止。 @Michael .. ya 结果大小应该是 4k 左右 .. 好的，我会尝试让你知道 我知道哪里出错了..我使用了错误的频道号..在标题中我使用了 4088 大小..这是错误的我应该使用 44 大小..谢谢大家.. 【参考方案1】：我得到了解决方案.. 这是我的代码
public class Audio_Record extends Activity
private static final int RECORDER_SAMPLERATE = 8000;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private AudioRecord recorder = null;
private Thread recordingThread = null;
private boolean isRecording = false;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setButtonHandlers();
enableButtons(false);
int bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE,
RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);
System.out.println("BUFFER SIZE VALUE IS " + bufferSize);
private void setButtonHandlers()
((Button) findViewById(R.id.btnStart)).setOnClickListener(btnClick);
((Button) findViewById(R.id.btnStop)).setOnClickListener(btnClick);
private void enableButton(int id, boolean isEnable)
((Button) findViewById(id)).setEnabled(isEnable);
private void enableButtons(boolean isRecording)
enableButton(R.id.btnStart, !isRecording);
enableButton(R.id.btnStop, isRecording);
int BufferElements2Rec = 1024; // want to play 2048 (2K) since 2 bytes we
// use only 1024
int BytesPerElement = 2; // 2 bytes in 16bit format
private void startRecording()
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING, BufferElements2Rec * BytesPerElement);
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable()
public void run()
writeAudioDataToFile();
, "AudioRecorder Thread");
recordingThread.start();
private byte[] short2byte(short[] sData)
int shortArrsize = sData.length;
byte[] bytes = new byte[shortArrsize * 2];
for (int i = 0; i < shortArrsize; i++)
bytes[i * 2] = (byte) (sData[i] & 0x00FF);
bytes[(i * 2) + 1] = (byte) (sData[i] >> 8);
sData[i] = 0;
return bytes;
private void writeAudioDataToFile()
// Write the output audio in byte
String filePath = "/sdcard/voice8K16bitmono.pcm";
short sData[] = new short[BufferElements2Rec];
FileOutputStream os = null;
try
os = new FileOutputStream(filePath);
catch (FileNotFoundException e)
e.printStackTrace();
while (isRecording)
// gets the voice output from microphone to byte format
recorder.read(sData, 0, BufferElements2Rec);
System.out.println("Short wirting to file" + sData.toString());
try
// // writes the data to file from buffer
// // stores the voice buffer
byte bData[] = short2byte(sData);
os.write(bData, 0, BufferElements2Rec * BytesPerElement);
catch (IOException e)
e.printStackTrace();
try
os.close();
catch (IOException e)
e.printStackTrace();
private void stopRecording()
// stops the recording activity
if (null != recorder)
isRecording = false;
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
private View.OnClickListener btnClick = new View.OnClickListener()
public void onClick(View v)
switch (v.getId())
case R.id.btnStart:
enableButtons(true);
startRecording();
break;
case R.id.btnStop:
enableButtons(false);
stopRecording();
break;
;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
if (keyCode == KeyEvent.KEYCODE_BACK)
finish();
return super.onKeyDown(keyCode, event);
【讨论】：
在不使用 wav 标头的情况下工作正常。以 pcm 格式录制音频文件并播放。【参考方案2】：我自己在实现这一点时遇到了很多麻烦。我做了很多上面每个人都说的事情。我将其实现为它自己的名为 Recorder 的类（并加入了上述所有“修复”以及其他一些调整）。我希望我的代码可以帮助其他人节省我为此付出的许多时间：
public class Recorder
//Begin private fields for this class
private AudioRecord recorder;
private static final int RECORDER_BPP = 16;
private static final String AUDIO_RECORDER_FILE_EXT_WAV = "AudioRecorder.wav";
private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder";
private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw";
private static final int RECORDER_SAMPLERATE = 8000;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO;
private static final int RECORDER_CHANNELS_INT = 1;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private int bufferSize = 200000;
short[] buffer;
private Thread recordingThread = null;
private boolean isRecording = false;
//Constructor
Recorder(String uniquename)
//Initilize our recorder object
/*recorder = new AudioRecord(
MediaRecorder.AudioSource.MIC,
44100,
AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT,
AudioRecord.getMinBufferSize(44100,AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT)
);
*/
int bufferSize = AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE,
RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);
System.out.println("BUFFER SIZE VALUE IS " + bufferSize);
int buffercount = 4088 / bufferSize;
if (buffercount < 1)
buffercount = 1;
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING, 44100);
//recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
public void start() throws IllegalStateException, IOException
buffer = new short[4088];
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable()
@Override
public void run()
writeAudioDataToFile();
, "AudioRecorder Thread");
recordingThread.start();
public void stop()
System.out.println("Told to stop");
stopRecording();
public boolean isRecording()
if(recorder.getRecordingState() == AudioRecord.RECORDSTATE_RECORDING)
return true;
else
return false;
private void stopRecording()
// stops the recording activity
if (null != recorder)
isRecording = false;
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
// copy the recorded file to original copy & delete the recorded copy
copyWaveFile(getTempFilename(), getFilename());
deleteTempFile();
// stores the file into the SDCARD
private String getFilename()
System.out.println("---3---");
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
if (!file.exists())
file.mkdirs();
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_FILE_EXT_WAV);
private void deleteTempFile()
File file = new File(getTempFilename());
file.delete();
private void copyWaveFile(String inFilename, String outFilename)
System.out.println("---8---");
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = RECORDER_SAMPLERATE;
int channels = RECORDER_CHANNELS_INT;
long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;
byte[] data = new byte[bufferSize];
try
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
Controller.doDoc("File size: " + totalDataLen, 4);
WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
longSampleRate, channels, byteRate);
byte[] bytes2 = new byte[buffer.length * 2];
ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN)
.asShortBuffer().put(buffer);
while (in.read(bytes2) != -1)
out.write(bytes2);
in.close();
out.close();
catch (FileNotFoundException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
// stores the file into the SDCARD
private String getTempFilename()
// Creates the temp file to store buffer
System.out.println("---4-1--");
String filepath = Environment.getExternalStorageDirectory().getPath();
System.out.println("---4-2--");
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
System.out.println("---4-3--");
if (!file.exists())
file.mkdirs();
File tempFile = new File(filepath, AUDIO_RECORDER_TEMP_FILE);
System.out.println("---4-4--");
if (tempFile.exists())
tempFile.delete();
System.out.println("---4-5--");
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
private void writeAudioDataToFile()
// Write the output audio in byte
byte data[] = new byte[bufferSize];
String filename = getTempFilename();
//
FileOutputStream os = null;
//
try
//
os = new FileOutputStream(filename);
//
catch (FileNotFoundException e)
e.printStackTrace();
int read = 0;
// if (null != os)
while (isRecording)
// gets the voice output from microphone to byte format
recorder.read(buffer, 0, buffer.length);
// read = recorder.read(data, 0, 6144);
if (AudioRecord.ERROR_INVALID_OPERATION != read)
try
// // writes the data to file from buffer
// // stores the voice buffer
// short[] shorts = new short[bytes.length/2];
// to turn bytes to shorts as either big endian or little
// endian.
// ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(shorts);
// to turn shorts back to bytes.
byte[] bytes2 = new byte[buffer.length * 2];
ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN)
.asShortBuffer().put(buffer);
os.write(bytes2);
// ServerInteractor.SendAudio(buffer);
catch (IOException e)
e.printStackTrace();
try
os.close();
catch (IOException e)
e.printStackTrace();
private void WriteWaveFileHeader(FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels, long byteRate)
throws IOException
System.out.println("---9---");
byte[] header = new byte[4088];
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) RECORDER_CHANNELS_INT;
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) (RECORDER_CHANNELS_INT * RECORDER_BPP / 8); // block align
header[33] = 0;
header[34] = RECORDER_BPP; // 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, 4088);
【讨论】：
【参考方案3】：int channels = 1 代替 int channels = 2 代替 CHANNELS = AudioFormat.CHANNEL_IN_MONO！
【讨论】：
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