发送嗡嗡声耳塞向左或向右

Question

有没有办法写的Android的Java代码，Android手机，发送蜂鸣音（我想一定频率）通过耳耳机插口和插入左右耳塞，彼此独立。基本上我想发一个嗡嗡声到左耳塞。我想发送一个嗡嗡声到右耳塞。

Answer 1

这是一个很有趣的问题，所以我虽然我给它一去，我已经写了在所需频率上产生音，然后播放它的一类，我不能测试左/右音量的部分，因为我不能找到我的耳机，但它应该工作！

希望这会有所帮助！

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, 0, buffer.length); 

    } 

    public void Play(){ 
     aTrack.play(); 
    } 

    public void Stop(){ 
     aTrack.stop(); 
    } 
}