问题描述
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有没有一种方法可以为Android手机编写android Java代码,从而通过耳机插孔发送嗡嗡声(我正在考虑某个频率),并且彼此独立地进入耳塞。基本上,我想向左耳塞发出嗡嗡声。我想向正确的耳塞发出嗡嗡声。
解决方法
这是一个非常有趣的问题,所以我虽然愿意,但我编写了一个类,以所需的频率生成音调然后播放它,因为无法找到左/右音量部分,所以我无法对其进行测试我的耳机,但应该可以!
希望这可以帮助!
肯尼
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;
public class ToneGen {
int seconds;
int sampleRate = 16000;
double frequency;
double RAD = 2.0 * Math.PI;
AudioTrack aTrack;
/**
* @param frequency The frequency of the tone
* @param duration The duration of the tone in seconds
* @param leftVolume Left volume 0.0f - silent,1.0f full volume
* @param rightVolume Right volume 0.0f - silent,1.0f full volume
*/
public ToneGen(double frequency,int duration,float leftVolume,float rightVolume){
this.frequency = frequency;
seconds = duration * 2;
byte[] buffer = new byte[sampleRate * seconds];
for ( int i=0; i<buffer.length; i++ )
{
buffer[i] = (byte)( Math.sin( RAD * frequency / sampleRate * i ) * 127.0 );
}
aTrack = new AudioTrack(AudioManager.STREAM_MUSIC,sampleRate,AudioFormat.CHANNEL_CONFIGURATION_STEREO,AudioFormat.ENCODING_PCM_16BIT,buffer.length,AudioTrack.MODE_STATIC);
aTrack.setStereoVolume(leftVolume,rightVolume);
aTrack.write(buffer,buffer.length);
}
public void Play(){
aTrack.play();
}
public void Stop(){
aTrack.stop();
}
}