音频录制立体声给人的左，右声道相同的数据

问题描述

我试图基于在什么获取记录在左，右声道的不同过程的音频数据记录和。为此，我正在使用录音类，与MIC输入和立体声模式。

I am trying to record and process audio data based on differences in what gets recorded in the left and right channel. For this I am using Audio Record class, with MIC as input and STEREO mode.

recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate,
                                    AudioFormat.CHANNEL_IN_STEREO,
                                    AudioFormat.ENCODING_PCM_16BIT, bufferSize);

我的问题是，我得到完全相同的两个声道相同的数据。 （备用样品中分离得到各个通道输入）。请帮忙。我不知道为什么会这样。

My issue is that I get exactly the same data in both the channels. (alternate samples are separated to get individual channel inputs). Please help. I am not sure why this is happening.

推荐答案

下面是一个工作示例用于捕获音频立体声（与三星Galaxy S3 4.4.2 SlimKat测试）：

Here is a working example for capturing audio in stereo (tested with Samsung Galaxy S3 4.4.2 SlimKat):

private void startRecording() {
    String filename = Environment.getExternalStorageDirectory().getPath()+"/SoundRecords/"+System.currentTimeMillis()+".aac";
    File record = new File(filename);
    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
    recorder.setAudioEncodingBitRate(128000);
    recorder.setAudioSamplingRate(96000);
    recorder.setAudioChannels(2);
    recorder.setOutputFile(filename);
    t_filename.setText(record.getName());
    try {
        recorder.prepare();
        recorder.start();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

如果你的手机支持立体声捕捉，那么这应该工作：）

If your phone supports stereo capturing, then this should work :)

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