减少audiorecord的大小

Question

我正在使用音频记录来录制音频并将字节发送到远程服务器但是我发现字节的大小与媒体记录器相比更大但不幸的是，我必须使用音频记录来处理字节
我的问题是如何减小它的大小，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;
        }
    }