我试图将其录制到可以记录用户语音并使用MediaRecorder和AudioTrack在同一 Activity 中播放的位置。我只是不明白如何将文件写入AudioTrack。我已经阅读了两个文档,根本无法弄清楚。任何帮助,将不胜感激。到目前为止,这是我的代码,尚未完成。您需要读取的唯一按钮是recordButton和playbackButton。谢谢!
private File outputFile = null;
private AudioTrack voice = null;
private MediaRecorder recorder = null;
....
// Setup recorder...
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
// Setup record file...
outputFile = getFileStreamPath("output.amr");
recorder.setOutputFile(outputFile.getAbsolutePath());
public void onClick(View v){
switch(v.getId()) {
case R.id.next_button:
giveSentence();
break;
case R.id.repeat_button:
// playSentence();
break;
case R.id.recordButton:
if (!recording){
recordButton2.setBackgroundResource(android.R.drawable.button_onoff_indicator_on);
recording = true;
recorder.reset();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outputFile.getAbsolutePath());
try {
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recorder.start();
}
else if(recording) {
recordButton2.setBackgroundResource(android.R.drawable.button_onoff_indicator_off);
recording = false;
recorder.stop();
}
break;
case R.id.playbackButton:
Music.playSentence(this, outputFile);
break;
case R.id.slowButton:
if(!slowedSpeech) {
slowButton2.setBackgroundResource(android.R.drawable.ic_dialog_alert);
slowedSpeech = true;
// slowspeech();
}
else if(slowedSpeech) {
slowButton2.setBackgroundResource(android.R.drawable.ic_menu_recent_history);
slowedSpeech = false;
// noSlowSpeech();
}
break;
}
}
最佳答案
将文件写入音轨是什么意思?您不需要将任何文件写入音轨,则设置音频源,录音机将创建音轨并从音频源读取pcm数据,然后对数据进行编码,然后将数据写入输出文件。
关于android - Android MediaRecorder到AudioTrack,录制和播放,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6616619/