在android中使用麦克风录制mp3格式的音频

我想在android中使用麦克风录制mp3格式的音频。 我试着记录下面的代码， 但是当我检查sdcard（路径：sdcard/recording.mp3）时，该文件不起作用。 （文件大小为0kb）

如何在android中以mp3或wav格式录制麦克风音频。 请帮忙

private final int FREQUENCY = 11025;
private final int CUSTOM_FREQ_SOAP = 1;
private final int OUT_FREQUENCY = FREQUENCY * CUSTOM_FREQ_SOAP;
private final int CHANNEL_CONTIGURATION = AudioFormat.CHANNEL_CONFIGURATION_MONO;
private final int AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;

======

try {
        mRecordingFile = File.createTempFile("recording", ".mp3", new File("/sdcard/"));


    } catch (IOException e) {
        throw new RuntimeException("Couldn't create file on SD card", e);
    }

private class RecordAudio extends AsyncTask<Void, Integer, Void> {
    @Override
    protected Void doInBackground(Void... params) {
        isRecording = true;
        try {
            DataOutputStream dos = new DataOutputStream(
                    new BufferedOutputStream(new FileOutputStream(
                            mRecordingFile, true)));

            int bufferSize = AudioRecord.getMinBufferSize(FREQUENCY,
                    CHANNEL_CONTIGURATION, AUDIO_ENCODING);

            AudioRecord audioRecord = new AudioRecord(
                    MediaRecorder.AudioSource.MIC, FREQUENCY,
                    CHANNEL_CONTIGURATION, AUDIO_ENCODING, bufferSize);

            short[] buffer = new short[bufferSize];
            audioRecord.startRecording();

            while (isRecording) {
                int bufferReadResult = audioRecord.read(buffer, 0,
                        bufferSize);
                int amplitude = 0;
                for (int i = 0; i < bufferReadResult; i++) {
                    dos.writeShort(buffer[i]);
                    amplitude += Math.abs((int) buffer[i]);
                }
                final int amp = amplitude;

            }

            audioRecord.stop();
                //dos.close();


        } catch (Throwable t) {
        }

        return null;
    }

======

try {
        mRecordingFile = File.createTempFile("recording", ".mp3", new File("/sdcard/"));


    } catch (IOException e) {
        throw new RuntimeException("Couldn't create file on SD card", e);
    }

private class RecordAudio extends AsyncTask<Void, Integer, Void> {
    @Override
    protected Void doInBackground(Void... params) {
        isRecording = true;
        try {
            DataOutputStream dos = new DataOutputStream(
                    new BufferedOutputStream(new FileOutputStream(
                            mRecordingFile, true)));

            int bufferSize = AudioRecord.getMinBufferSize(FREQUENCY,
                    CHANNEL_CONTIGURATION, AUDIO_ENCODING);

            AudioRecord audioRecord = new AudioRecord(
                    MediaRecorder.AudioSource.MIC, FREQUENCY,
                    CHANNEL_CONTIGURATION, AUDIO_ENCODING, bufferSize);

            short[] buffer = new short[bufferSize];
            audioRecord.startRecording();

            while (isRecording) {
                int bufferReadResult = audioRecord.read(buffer, 0,
                        bufferSize);
                int amplitude = 0;
                for (int i = 0; i < bufferReadResult; i++) {
                    dos.writeShort(buffer[i]);
                    amplitude += Math.abs((int) buffer[i]);
                }
                final int amp = amplitude;

            }

            audioRecord.stop();
                //dos.close();


        } catch (Throwable t) {
        }

        return null;
    }

私有类RecordAudio扩展异步任务{
@凌驾
受保护的Void doInBackground（Void…参数）{
isRecording=true；
试一试{
DataOutputStream dos=新的DataOutputStream(
新建BufferedOutputStream（新文件输出流(
mRecordingFile，true））；
int bufferSize=AudioRecord.getMinBufferSize（频率，
信道连接、音频编码）；
音频记录=新的音频记录(
MediaRecorder.AudioSource.MIC，频率，
通道连接、音频编码、缓冲区大小）；
short[]buffer=新的short[bufferSize]；
录音。开始录制（）；
while（isRecording）{
int bufferReadResult=audioRecord.read（缓冲区，0，
缓冲区大小）；
int振幅=0；
for（int i=0；i

我认为，在这种情况下，它不支持mp3格式（OutputFormat是MPEG_4）…TT