嗨我正在構建一個應用程序,它將使用來自MIC的傳入音頻並將其與存儲的聲音文件進行比較。此刻,我正試圖掌握AudioRecord函數的數據在保存到字節數組時的外觀。我的問題是,返回的值都是零。我不知道我是否可能沒有正確使用/設置AudioRecord功能。這裏是我的代碼:AudioRecord緩衝區值
import android.app.Activity;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class SnoreAlarmActivity extends Activity implements OnClickListener {
/** Called when the activity is first created. */
Button start, stop;
TextView display;
Boolean rec = false;
AudioRecord snore;
byte[] arrayOfByte = new byte[16 * 1024/8];
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
start = (Button) findViewById(R.id.bStart);
stop = (Button) findViewById(R.id.bStop);
display = (TextView) findViewById(R.id.tAnswer);
start.setOnClickListener(this);
stop.setOnClickListener(this);
int i = AudioRecord.getMinBufferSize(44100, 16, 2);
snore = new AudioRecord(MediaRecorder.AudioSource.MIC, 44100, 16, 2, i);// From
// MIC,Sample
// Rate
// of
// 44100,
// Channel_IN_MONO,16Bit
// Encoding,buffer
// size
// i
new Record().start();
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
switch (arg0.getId()) {
case R.id.bStart:
rec = true;
break;
case R.id.bStop:
rec = false;
snore.stop();
snore.release();
for (int i = 0; i < 100; i++) {
int x = (int) arrayOfByte[i];
Log.w("Tag", "" + x);
}
break;
}
}
class Record extends Thread {
Record() {
}
@Override
public void run() {
// TODO Auto-generated method stub
while (rec) {
snore.startRecording();
snore.read(arrayOfByte, 0, (16 * 1024/8));
}
}
}
}
所以我的問題是,爲什麼我得到零? *另外我知道我應該將數據存儲在一個簡短的16Bit編碼中,稍後會做,只是試圖理解此時從AudioRecord函數返回的值。