發送嗡嗡聲耳塞向左或向右

Question

有沒有辦法寫的Android的Java代碼，Android手機，發送蜂鳴音（我想一定頻率）通過耳耳機插口和插入左右耳塞，彼此獨立。基本上我想發一個嗡嗡聲到左耳塞。我想發送一個嗡嗡聲到右耳塞。

Answer 1

這是一個很有趣的問題，所以我雖然我給它一去，我已經寫了在所需頻率上產生音，然後播放它的一類，我不能測試左/右音量的部分，因爲我不能找到我的耳機，但它應該工作！

希望這會有所幫助！

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(); 
    } 
}