Java生成声音

Question

我创建了一个pong克隆，我想在发生碰撞时添加一些声音效果。我的问题是，我能找到的关于合成声音的每个例子大约需要30行代码，考虑到我的整个应用程序只有90行代码。我正在寻找一种更简单的方法。是否有一种简单的方法来创建不同音调的哔声？持续时间无关紧要。我只想要一系列不同音调的哔哔声。

Answer 1

这是一个从Java Sound - Example: Code to generate audio tone采取（和缩短）的小例子

    byte[] buf = new byte[ 1 ];;
    AudioFormat af = new AudioFormat( (float )44100, 8, 1, true, false );
    SourceDataLine sdl = AudioSystem.getSourceDataLine( af );
    sdl.open();
    sdl.start();
    for( int i = 0; i < 1000 * (float )44100 / 1000; i++ ) {
        double angle = i / ( (float )44100 / 440 ) * 2.0 * Math.PI;
        buf[ 0 ] = (byte )( Math.sin( angle ) * 100 );
        sdl.write( buf, 0, 1 );
    }
    sdl.drain();
    sdl.stop();

Answer 2

这是与上面相同的代码，在16位中有一些描述

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;

public class MakeSound {
  public static void main(String[] args) throws LineUnavailableException {
    System.out.println("Make sound");
    byte[] buf = new byte[2];
    int frequency = 44100; //44100 sample points per 1 second
    AudioFormat af = new AudioFormat((float) frequency, 16, 1, true, false);
    SourceDataLine sdl = AudioSystem.getSourceDataLine(af);
    sdl.open();
    sdl.start();
    int durationMs = 5000;
    int numberOfTimesFullSinFuncPerSec = 441; //number of times in 1sec sin function repeats
    for (int i = 0; i < durationMs * (float) 44100 / 1000; i++) { //1000 ms in 1 second
      float numberOfSamplesToRepresentFullSin= (float) frequency / numberOfTimesFullSinFuncPerSec;
      double angle = i / (numberOfSamplesToRepresentFullSin/ 2.0) * Math.PI;  // /divide with 2 since sin goes 0PI to 2PI
      short a = (short) (Math.sin(angle) * 32767);  //32767 - max value for sample to take (-32767 to 32767)
      buf[0] = (byte) (a & 0xFF); //write 8bits ________WWWWWWWW out of 16
      buf[1] = (byte) (a >> 8); //write 8bits WWWWWWWW________ out of 16
      sdl.write(buf, 0, 2);
    }
    sdl.drain();
    sdl.stop();
  }
}

Answer 3

你可以使用JSyn。这是你必须安装的库（使用.DLL和.JAR）。但是制作不同的音调非常简单。

Link（也提供教程）

这是一个例子：

public static void main(String[] args) throws Exception {
    SawtoothOscillatorBL osc;
    LineOut lineOut;
    // Start JSyn synthesizer.
    Synth.startEngine(0);

    // Create some unit generators.
    osc = new SawtoothOscillatorBL();
    lineOut = new LineOut();

    // Connect oscillator to both left and right channels of output.
    osc.output.connect(0, lineOut.input, 0);
    osc.output.connect(0, lineOut.input, 1);

    // Start the unit generators so they make sound.
    osc.start();
    lineOut.start();

    // Set the frequency of the oscillator to 200 Hz.
    osc.frequency.set(200.0);
    osc.amplitude.set(0.8);

    // Sleep for awhile so we can hear the sound.
    Synth.sleepForTicks(400);

    // Change the frequency of the oscillator.
    osc.frequency.set(300.0);
    Synth.sleepForTicks(400);

    // Stop units and delete them to reclaim their resources.
    osc.stop();
    lineOut.stop();
    osc.delete();
    lineOut.delete();

    // Stop JSyn synthesizer.
    Synth.stopEngine();
}

马亭

Answer 4

java.awt.Toolkit.getDefaultToolkit（）。嘟嘟声（）

一连串的哔哔声？

int numbeeps = 10;

for(int x=0;x<numbeeps;x++)
{
  java.awt.Toolkit.getDefaultToolkit().beep();
}