Java：在声音扬声器上产生无限的正弦音

Question

我正在尝试使用Java Audio API生成具有不同频率的两个正弦波的立体声，但我既不能使用双声道系统，也不能使用我的音调，出于某种原因，在播放时会中断和重启。 / p>

我的源代码：

public class GeradorSinal extends javax.swing.JFrame {

int fs = 48000;
AudioFormat af = new AudioFormat(fs, 8, 1, true, true);
SourceDataLine line;
Thread generator;
boolean parar = false;
byte[] senoid = new byte[1];

/**
 * Creates new form GeradorSinal
 */
public GeradorSinal() {
    initComponents();
    try {
        line = AudioSystem.getSourceDataLine(af);
        line.open(af, fs);
    } catch (LineUnavailableException e) {
        System.err.println(e.getMessage());
    }
}

public static double scale(
        double x,
        double old_min, double old_max,
        double new_min, double new_max) {
    double old_range = old_max - old_min;
    double new_range = new_max - new_min;
    return new_min + (x - old_min) * new_range / old_range;
}                     

private void bt_gerarActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    generator = new Thread(new Runnable() {

        @Override
        public void run() {
            long t = 0;
            long f = Long.parseLong(ln_freq.getText());
            line.start();
            while (!parar) {
                senoid[0] = (byte) scale(Math.sin(2 * Math.PI * f * t++ / fs),
                        -1.0, 1.0, Byte.MIN_VALUE, Byte.MAX_VALUE);
                line.write(senoid, 0, 1);
            }
            line.stop();
        }
    });
    generator.start();
}                                        

private void bt_pararActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:;
    parar = true;
    try {
        generator.join();
    } catch (InterruptedException e) {
        System.err.println(e.getMessage());
    }
    parar = false;
}                                        

private void bt_salvarActionPerformed(java.awt.event.ActionEvent evt) {                                          
    // TODO add your handling code here:
    try {
        FileWriter fstream = new FileWriter("testes.txt", true);
        try (BufferedWriter fbw = new BufferedWriter(fstream)) {
            DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
            Date date = new Date();
            fbw.write(dateFormat.format(date));
            fbw.write("\t");
            fbw.write(ln_freq.getText());
            fbw.write("\t");
            fbw.write(String.valueOf(1.2 * Double.parseDouble(ln_freq.getText())));
            fbw.write("\t");
            fbw.write(ln_volume.getText());
            fbw.newLine();
        }
    } catch (IOException e) {
        System.err.println(e.getMessage());
    }

}          

}