Android：java.lang.IllegalArgumentException：无效的音频缓冲区大小
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【中文标题】Android：java.lang.IllegalArgumentException：无效的音频缓冲区大小【英文标题】：Android : java.lang.IllegalArgumentException: Invalid audio buffer size 【发布时间】：2012-05-18 11:25:45 【问题描述】：我正在尝试在使用 audiorecord 类立即录制音频后播放音频。我搜索了谷歌和***，我发现了任何解决方案。有什么帮助吗？ 这是 Audio_Record 的代码 ....
public class Audio_RecordActivity extends Activity
private static final int RECORDER_BPP = 16;
private static final String AUDIO_RECORDER_FILE_EXT_WAV = ".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 = 16000;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_STEREO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private AudioRecord recorder = null;
private int bufferSize = 0;
private Thread recordingThread = null;
private boolean isRecording = false;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
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);
private String getFilename()
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
if (!file.exists())
file.mkdirs();
return (file.getAbsolutePath() + "/" + System.currentTimeMillis() + AUDIO_RECORDER_FILE_EXT_WAV);
private String getTempFilename()
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, AUDIO_RECORDER_FOLDER);
if (!file.exists())
file.mkdirs();
File tempFile = new File(filepath, AUDIO_RECORDER_TEMP_FILE);
if (tempFile.exists())
tempFile.delete();
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
private void startRecording()
recorder = new AudioRecord(MediaRecorder.Audiosource.MIC,
RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING, bufferSize);
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable()
@Override
public void run()
writeAudioDataToFile();
, "AudioRecorder Thread");
recordingThread.start();
private void writeAudioDataToFile()
byte data[] = new byte[bufferSize];
String filename = getTempFilename();
FileOutputStream os = null;
try
os = new FileOutputStream(filename);
catch (FileNotFoundException e)
// TODO Auto-generated catch block
e.printStackTrace();
int read = 0;
if (null != os)
while (isRecording)
read = recorder.read(data, 0, bufferSize);
if (AudioRecord.ERROR_INVALID_OPERATION != read)
try
os.write(data);
catch (IOException e)
e.printStackTrace();
try
os.close();
catch (IOException e)
e.printStackTrace();
private void stopRecording()
if (null != recorder)
isRecording = false;
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
copyWaveFile(getTempFilename(), getFilename());
deleteTempFile();
private void deleteTempFile()
File file = new File(getTempFilename());
file.delete();
private void copyWaveFile(String inFilename, String outFilename)
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);
while (in.read(data) != -1)
out.write(data);
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
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) (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, 44);
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("Start Recording");
enableButtons(false);
stopRecording();
break;
;
我收到如下 logcat 文件所示的错误。
logcat 错误
05-18 16:51:04.656: E/androidRuntime(1974): FATAL EXCEPTION: main
05-18 16:51:04.656: E/AndroidRuntime(1974): java.lang.IllegalArgumentException: Invalid audio buffer size.
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.media.AudioRecord.audioBuffSizeCheck(AudioRecord.java:333)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.media.AudioRecord.<init>(AudioRecord.java:230)
05-18 16:51:04.656: E/AndroidRuntime(1974): at audio.xxx.Audio_RecordActivity.startRecording(Audio_RecordActivity.java:88)
05-18 16:51:04.656: E/AndroidRuntime(1974): at audio.xxx.Audio_RecordActivity.access$1(Audio_RecordActivity.java:85)
05-18 16:51:04.656: E/AndroidRuntime(1974): at audio.xxx.Audio_RecordActivity$1.onClick(Audio_RecordActivity.java:258)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.view.View.performClick(View.java:3511)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.view.View$PerformClick.run(View.java:14105)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.os.Handler.handleCallback(Handler.java:605)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.os.Handler.dispatchMessage(Handler.java:92)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.os.Looper.loop(Looper.java:137)
05-18 16:51:04.656: E/AndroidRuntime(1974): at android.app.ActivityThread.main(ActivityThread.java:4424)
05-18 16:51:04.656: E/AndroidRuntime(1974): at java.lang.reflect.Method.invokeNative(Native Method)
05-18 16:51:04.656: E/AndroidRuntime(1974): at java.lang.reflect.Method.invoke(Method.java:511)
05-18 16:51:04.656: E/AndroidRuntime(1974): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
05-18 16:51:04.656: E/AndroidRuntime(1974): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
05-18 16:51:04.656: E/AndroidRuntime(1974): at dalvik.system.NativeStart.main(Native Method)
请帮帮我.. 我应该使用什么缓冲区大小。我使用 4096 然后也显示相同的错误。
【问题讨论】：
【参考方案1】：您尝试使用此代码，它可以正常工作..
public class Audio_RecordActivity 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);
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】：
【参考方案2】：对于音频录制和播放，请参阅此链接Samples 下载示例并使用 Audio Recoding Code 。效果很好。
【讨论】：
我只是在尝试你所说的这个示例代码。它对我不起作用。你能弄清楚我做错了什么吗？以上是关于Android：java.lang.IllegalArgumentException：无效的音频缓冲区大小的主要内容，如果未能解决你的问题，请参考以下文章
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