Java生成声音
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1932490/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Java generating sound
提问by Hamza Yerlikaya
I created a pong clone and I would like to add some sound effects when collisions occur. My problem is that every example I could find about synthesizing sound takes about 30 lines of code, considering my whole application has only 90 lines of code. I am looking for a simpler approach. Is there a simple way to create a beep sound of different tones? Duration does not matter. I just want a series of beeps with different tones.
我创建了一个乒乓球克隆，我想在发生碰撞时添加一些声音效果。我的问题是，考虑到我的整个应用程序只有 90 行代码，我能找到的关于合成声音的每个示例都需要大约 30 行代码。我正在寻找一种更简单的方法。有没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。
采纳答案by tangens
Here's a small example taken (and shortened) from Java Sound - Example: Code to generate audio tone
这是从Java Sound 中获取（并缩短）的一个小示例- 示例：生成音频音调的代码
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();
回答by Sev
java.awt.Toolkit.getDefaultToolkit().beep()
java.awt.Toolkit.getDefaultToolkit().beep()
series of beeps?
一连串的哔哔声？
int numbeeps = 10;
for(int x=0;x<numbeeps;x++)
{
java.awt.Toolkit.getDefaultToolkit().beep();
}
回答by Martijn Courteaux
You can use JSyn. This is a lib you have to install (with a .DLLand a .JAR). But very simple to create diffrent tones.
您可以使用 JSyn。这是您必须安装的库（带有 a.DLL和 a .JAR）。但是很容易创建不同的音调。
Link(Also tutorials available)
链接（也提供教程）
This is an example:
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();
}
Martijn
马丁
回答by Bojan Vukasovic
Here is same code as above with a bit of description in 16 bits
这是与上面相同的代码，其中有一些 16 位的描述
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();
}
}
