android降噪算法,Android主动降噪功能

我正在做一个有点雄心勃勃的项目,通过耳机或耳机在

Android上实现主动降噪.

我的目标是用Android手机麦克风记录环境噪音,反相(从音频记录中拉出的短值上的简单* -1),然后通过耳机播放倒置的波形.如果延迟和幅度接近正确,则应该使环境中的大量机械结构噪声无效.

这是我到目前为止所得到的：

@Override

public void run()

{

Log.i("Audio", "Running Audio Thread");

AudioRecord recorder = null;

AudioTrack track = null;

short[][] buffers = new short[256][160];

int ix = 0;

/*

* Initialize buffer to hold continuously recorded audio data, start recording, and start

* playback.

*/

try

{

int N = AudioRecord.getMinBufferSize(8000,AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT);

recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, 8000, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, N*10);

//NoiseSuppressor ns = NoiseSuppressor.