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# Untitled

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1. // Aufgabe 2.1 ------------------------------------------------------
2.         {
3.             double f = 1000;
4.             double T = 0.005; // 5ms
5.             double[] note = sinSound(f, FS, T);
6.             PlotPanel plot = Plot.createPlot("Aufgabe 2.1");
7.             String plotTitle = String.format("f=%.2f kHz, fs=%.2f kHz, T=%.2f ms", f/1000, FS/1000, T*1000);
9.             Plot.showPlot(plot, -1.0, +1.0);        // erweiterte showPlot()-Methode!
10.         }
11.
12. //      // Aufgabe 2.2 ------------------------------------------------------
13.         {
14.             double f = Kammerton;
15.             double T = 1;
16.             AudioPlayer player = new AudioPlayer(FS);
17.             for (int i=1; i <= 10; i++) {
18.                 double a = i * 0.1;
19.                 double[] note = sinSound(f, FS, T, a);
20.                 player.play(note);
21.             }
22.             player.close();
23.         }
24.
25.
26. static double[] sinSound(double f, double fs, double T) {
27.         int n = (int)(T * fs);
28.         double[] tmp = new double[n];
29.         double w = (2*Math.PI*f)/fs;
30.         for (int i=0; i < n; i ++) {
31.             tmp[i] = Math.sin(i*w);
32.         }
33.         return tmp;
34.     }
35.
36.     static double[] sinSound(double f, double fs, double T, double a) {
37.         int n = (int)(T * fs);
38.         double[] tmp = new double[n];
39.         if (0 <= a && a <= 1) {
40.             double w = (2*Math.PI*f)/fs;
41.             for (int i=0; i < n; i ++) {
42.                 tmp[i] = Math.sin(i*w)*a;
43.             }
44.         }
45.         else {
46.             System.out.println("LautstÃ¤rke falsch angegeben! (muss zwischen 0 und 1 sein)");
47.         }
48.         return tmp;
49.     }
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