音频波形图.docVIP

音频波形图 import java.awt.Graphics; import java.awt.GridLayout; import java.io.File; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.DataLine; import javax.sound.sampled.SourceDataLine; import javax.swing.GroupLayout; import javax.swing.JFrame; /** * */ /** * @author Administrator * */ public class Musicline extends JFrame implements Runnable { private byte[] audioData = null; private int intBytes = 0; private byte[] ml = new byte[1]; private int[] drawl = null; /** Creates new form Musicline */ public Musicline() { initComponents(); Graphics g; g = this.getGraphics(); } public void paint(Graphics g) { g.clearRect(0, 0, 900, 900); // System.out.print(drawl.length); if (audioData != null) { drawl = new int[audioData.length]; for (int i = 0; i audioData.length; i++) { ml[0] = audioData[i]; // String s=new String(ml); drawl[i] = Math.abs((int) ml[0]); } System.out.println(drawl[0]); for (int i = 0; i drawl.length - 1; i++) { g.drawLine(i * this.getWidth() / 256, drawl[i] + 100, (i + 1) * this.getWidth() / 256, drawl[i + 1] + 100); } } } /* * (non-Javadoc) * * @see java.lang.Runnable#run() */ public void run() { // TODO Auto-generated method stub while (intBytes != -1) { try { synchronized (this) { this.wait(10); } } catch (InterruptedException ex) { ex.printStackTrace(); } repaint(); } } public void play() { try { AudioInputStream ais = AudioSystem.getAudioInputStream(new File( F:/perl/key2.wav));// 获得音频输入流 ais = AudioSystem.getAudioInputStream( AudioFormat.Encoding.PCM_SIGNED, ais); AudioFormat baseFormat = ais.getFormat();// 指定声音流中特定数据安排 System.out.println(baseFormat= + baseFormat); DataLine.Info info = new DataLine.Info(SourceDataLine.class, baseFormat); System.out.println(info= + info); SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info); // 从混频器获得源数据行 System.out.println(line= + line); line.open(baseFormat);// 打开具有指定格式的行，这样可使行获得所有所需的系统资源并变得可操作。 line