从 Android 中的蓝牙音频设备录制音频 [英] Recording Audio from a Bluetooth Audio Device in Android

问题描述

如何从配对的蓝牙音频设备录制语音(即 安卓系统中的 Moster Clarity 蓝牙音箱.

How can I record the voice from a paired Bluetooth audio device (i.e. Moster Clarity Bluetooth Speaker) in Android.

我已在 Android 中与设备配对，我想录制设备麦克风发出的声音(而不是使用手机的内置麦克风).

I've paired with the device from within Android, and I'd like to record the voice from the microphone on the device (as opposed to using the phone's built-in microphone).

这是我用于录制的代码:

Here's the code I'm using for recording:

try {
    isRecording = true;

    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

    if (file == null) {
        File rootDir = Environment.getExternalStorageDirectory();
        file = File.createTempFile(PREFIX, EXTENSION, rootDir);
    }

    recorder.setOutputFile(file.getAbsolutePath());
    recorder.prepare();
    recorder.start();

    timDown = new RecordCountDown(10000, 1000);
    timDown.start();

} catch (Exception e) {
    Log.i("Error Message", "Error Message :" + e.getMessage());
}

我该怎么做?

推荐答案

试试这个代码也许对你有帮助..

Try this code maybe helpful for you..

am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

registerReceiver(new BroadcastReceiver() {

@Override
public void onReceive(Context context, Intent intent) {
    int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, -1);
    Log.d(TAG, "Audio SCO state: " + state);

    if (AudioManager.SCO_AUDIO_STATE_CONNECTED == state) { 
        /* 
         * Now the connection has been established to the bluetooth device. 
         * Record audio or whatever (on another thread).With AudioRecord you can          record   with an object created like this:
         * new AudioRecord(MediaRecorder.AudioSource.MIC, 8000, AudioFormat.CHANNEL_CONFIGURATION_MONO,
         * AudioFormat.ENCODING_PCM_16BIT, audioBufferSize);
         *
         * After finishing, don't forget to unregister this receiver and
         * to stop the bluetooth connection with am.stopBluetoothSco();
         */
        unregisterReceiver(this);
    }

    }
}, new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));

Log.d(TAG, "starting bluetooth");
am.startBluetoothSco();

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