厚厚的慢速录音使用安卓录音机



我正在开发一个使用Mediarecorder类录制声音的android应用程序以下是我代码的一部分:

  public void start() throws IOException {
    String state = android.os.Environment.getExternalStorageState();
    if(!state.equals(android.os.Environment.MEDIA_MOUNTED))  {
        throw new IOException("SD Card is not mounted.  It is " + state + ".");
    }
    // make sure the directory we plan to store the recording in exists
    File directory = new File(path).getParentFile();
    if (!directory.exists() && !directory.mkdirs()) {
      throw new IOException("Path to file could not be created.");
    }
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setAudioEncodingBitRate(16);
recorder.setAudioSamplingRate(44100);
try {
    recorder.setOutputFile(path);
} catch (IllegalStateException e) {
    e.printStackTrace();
}
recorder.prepare();
recorder.start();

}

当录音机停止时,我用mediaplayer类播放,但结果声音很粗很慢。。可能是什么问题?

根据MediaRecorder文档,AMRNB的采样率为8kHZ,您将其设置为不同的值。我怀疑这就是问题所在。

你能评论这些行并检查这是否适用于你吗:

//recorder.setAudioEncodingBitRate(16); 
//recorder.setAudioSamplingRate(44100); 

最新更新