AudioTrack AudioRecord android问题，静音

Question

有谁知道是否需要以特殊的方式/类型的线程、可运行、服务等将音频记录和音轨分开以便能够协同工作？现在我可以开始一个音轨，然后录音没有问题。

但是，如果我在录制时开始和停止音轨，则录音开始输出 0，就好像它被静音了一样。 （但它没有静音或停止）

如果我启动音频记录然后是音轨，那么音频记录也被“静音”。

同样奇怪的是，当我拔下并插入有线耳机时，它会再次开始录制/输出录制而不是 0（这让我觉得我的手机联想 B 和联想 C2 太便宜了（电路/硬件问题）或有构建问题）但我不知道。

是否有人听说过突然“静音”的音频记录或在未应用任何设置/方法的情况下响应拔出/插入有线耳机的音频记录的问题？

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代码更新

class myRecordAndPlayer(){

public void initiateRecorder() {
    if(audio.getMode()!=AudioManager.MODE_IN_CALL) {
        audio.setMode(AudioManager.MODE_IN_CALL);
        //audio.setSpeakerphoneOn(false); for mode in com (mode in com produces more echo/crosstalk)
    }

    rec = true;
    Thread thread = new Thread(new Runnable() {
        @Override
        public void run() {
            android.os.Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_AUDIO);
            AudioRecord audioRecorder = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE,
                    AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT,
                    AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT) * 10);
            try {
                audioRecorder.startRecording();
                while (rec) {
                    bytes_read = audioRecorder.read(buf_audio, 0, buf_audio_len);


public void initiatePlayer() {
    if(!play) {
        play = true;
        android.os.Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_AUDIO);
        Thread receiveThread = new Thread(new Runnable() {
            @Override
            public void run() {
                AudioTrack track = new AudioTrack(AudioManager.STREAM_MUSIC, SAMPLE_RATE, AudioFormat.CHANNEL_OUT_MONO,
                        AudioFormat.ENCODING_PCM_16BIT, BUF_SIZE, AudioTrack.MODE_STREAM);
                track.play();
                try {
                    while(play) {
                        track.write(bufToPlay, 0, bufToPlay.length);

Answer 1

未测试。

private Thread audioRecordThread
private AudioRecord audioRecorder;
private AudioTrack audioTrack;

public void initialize() {
    audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, SAMPLE_RATE, AudioFormat.CHANNEL_OUT_MONO,
                        AudioFormat.ENCODING_PCM_16BIT, BUF_SIZE, AudioTrack.MODE_STREAM);

    audioRecorder = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE,
                    AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT,
                    AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT) * 10);

    audioRecordThread = new Thread(new Runnable() {
            public void run() {
                writeAudioDataToAudioTrack();
            }
        });
}

public void start() {
    audioTrack.play();
    audioRecorder.startRecording();
    audioRecordThread.start();
}

private void writeAudioDataToAudioTrack() {
    while(AudioRecord.RECORDSTATE_RECORDING == audioRecord.getRecordingState()) {
        audioTrack.write(bufToPlay, 0, bufToPlay.length);
    }
}