Android实现直接播放麦克风采集到的声音

本文实例讲述了android实现直接播放麦克风采集到的声音。分享给大家供大家参考。具体如下：

这是一个直接播放麦克风采集到的声音线程类：

class recordthread extends thread{ 
  static final int frequency = 44100; 
  static final int channelconfiguration = audioformat.channel_configuration_mono; 
  static final int audioencoding = audioformat.encoding_pcm_16bit; 
@override 
public void run() { 
  // todo auto-generated method stub 
  int recbufsize = audiorecord.getminbuffersize(frequency, channelconfiguration, audioencoding)*2; 
  int plybufsize = audiotrack.getminbuffersize(frequency, channelconfiguration, audioencoding)*2; 
  audiorecord audiorecord = new audiorecord(mediarecorder.audiosource.mic, frequency, channelconfiguration, audioencoding, recbufsize); 
  audiotrack audiotrack = new audiotrack(audiomanager.stream_music, frequency, channelconfiguration, audioencoding, plybufsize, audiotrack.mode_stream); 
  byte[] recbuf = new byte[recbufsize]; 
  audiorecord.startrecording(); 
  audiotrack.play(); 
  while(true){ 
    int readlen = audiorecord.read(recbuf, 0, recbufsize); 
    audiotrack.write(recbuf, 0, readlen); 
  } 
  audiotrack.stop(); 
  audiorecord.stop(); 
  } 
} 

使用的时候，这样就行：

recordthread rec = new recordthread(); 
rec.start();

需要在androidmanifest.xml文件中添加路由权限：

<uses-permission android:name="android.permission.record_audio"/>

希望本文所述对大家的android程序设计有所帮助。