Question

我在how to implement audio sounds in Java games上观看了Mattew的精彩教程。

问题是，即使在我运行游戏后减少了wav文件的音量，在Java中wav声音文件的音量仍然非常高，我的意思是你甚至无法玩游戏因为背景音乐太大了。

为什么wav文件的卷不能用Java维护？

Answer 1

使用基于Java Sound的Clip可能比基于applet的AudioClip更好。 Clip接口支持控件，其中一个控件应为MASTER_GAIN。

E.G。

import java.awt.*;
import java.net.URL;
import javax.swing.*;
import javax.swing.event.*;
import javax.sound.sampled.*;

class ClipVolume {

    public static void main(String[] args) throws Exception {
        URL url = new URL(
                "http://pscode.org/media/leftright.wav");
        final Clip clip = AudioSystem.getClip();
        // getAudioInputStream() also accepts a File or InputStream
        AudioInputStream ais = AudioSystem.getAudioInputStream(url);
        clip.open(ais);
        clip.loop(Clip.LOOP_CONTINUOUSLY);
        Runnable r = new Runnable() {

            @Override
            public void run() {
                final FloatControl control = (FloatControl) 
                        clip.getControl(FloatControl.Type.MASTER_GAIN);

                final JSlider volume = new JSlider(
                        JSlider.HORIZONTAL,
                        (int) control.getMinimum(),
                        (int) control.getMaximum(),
                        (int) control.getValue());
                volume.addChangeListener(new ChangeListener() {

                    public void stateChanged(ChangeEvent ce) {
                        control.setValue(volume.getValue());
                    }
                });

                JOptionPane.showMessageDialog(null, volume);
            }
        };
        // Swing GUIs should be created and updated on the EDT
        // http://docs.oracle.com/javase/tutorial/uiswing/concurrency
        SwingUtilities.invokeLater(r);
    }
}

Answer 2

所以，这是我正在使用的代码，正在运行并希望这也将有助于其他人。快乐的编码，再次感谢Andrew Thompson

 package com.stefanbanu;
    import java.io.*;
    import java.net.URL;

    import javax.sound.sampled.*;
    import javax.swing.*;
    import javax.swing.event.ChangeEvent;
    import javax.swing.event.ChangeListener;

    // To play sound using Clip, the process need to be alive.
    // Hence, we use a Swing application.
    public class SoundClipTest extends JFrame {

       /**
         * 
         */
        private static final long serialVersionUID = 1L;

    // Constructor
       public SoundClipTest() {
          this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          this.setTitle("Test Sound Clip");
          this.setSize(300, 200);
          this.setVisible(true);

          try {
             // Open an audio input stream.
             URL url = this.getClass().getClassLoader().getResource("bgsong.wav");
             AudioInputStream audioIn = AudioSystem.getAudioInputStream(url);
             // Get a sound clip resource.
             Clip clip = AudioSystem.getClip();
             // Open audio clip and load samples from the audio input stream.
             clip.open(audioIn);
             clip.start();
             final FloatControl control = (FloatControl) 
                     clip.getControl(FloatControl.Type.MASTER_GAIN);
             control.setValue(-30.0f);

    //         final JSlider volume = new JSlider(
    //                 JSlider.HORIZONTAL,
    //                 (int) control.getMinimum(),
    //                 (int) control.getMaximum(),
    //                 (int) control.getValue());
    //         volume.addChangeListener(new ChangeListener() {
    //
    //             public void stateChanged(ChangeEvent ce) {
    //                 control.setValue(volume.getValue());
    //             }
    //         });
    //
    //         JOptionPane.showMessageDialog(null, volume);
          } catch (UnsupportedAudioFileException e) {
             e.printStackTrace();
          } catch (IOException e) {
             e.printStackTrace();
          } catch (LineUnavailableException e) {
             e.printStackTrace();
          }
       }

       public static void main(String[] args) {
          new SoundClipTest();
       }
    }

AudioClip音量问题

2 个答案: