本文實例講述了Android實現直接播放麥克風采集到的聲音。分享給大家供大家參考。具體如下：
這是一個直接播放麥克風采集到的聲音線程類：
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(); } } 使用的時候，這樣就行：
需要在AndroidManifest.xml文件中添加路由權限：
希望本文所述對大家的Android程序設計有所幫助。
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