java - 减小音频记录的大小

Question

我正在使用音频记录来记录音频并将字节发送到远程服务器，但我发现与媒体记录器相比，字节的大小更大，但不幸的是，我必须使用音频记录来处理字节
我的问题是我该怎么做减小它的大小，我在这里听说过媒体编解码器，但我没有使用它这是我的代码

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();
    }

    //Conversion of short to byte
    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


        short sData[] = new short[BufferElements2Rec];



        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);
                String bdata2 =Base64.encodeToString(bData,Base64.DEFAULT);



            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }

    private void stopRecording() {
        // stops the recording activity
        if (null != recorder) {
            isRecording = false;


            recorder.stop();
            recorder.release();

            recorder = null;
            recordingThread = null;
        }
    }

标签： javaandroid