private static void rand(int t, int range) {
long t0 = System.currentTimeMillis();
Random r = new Random();
double hz;
double n;
int d;
int i;
while (System.currentTimeMillis() <= t0 + t) {
n = r.nextInt(range * 12 + 1) / 2.0;
d = 250 * (r.nextInt(8 - 1) + 1);
if (r.nextDouble() <= 0.1) {
i = 0;
} else {
i = 1;
}
hz = 440 * Math.pow(2, n / 6.0);
try {
Tone.sound(hz, d, i);
} catch (LineUnavailableException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws LineUnavailableException {
Tone.sound(440, 1000, 1);
scale(440, 2);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
rand(30000, 2);
}
private static void scale(int f0, int range) {
double hz;
for (double n = 0; n <= 6 * range; n += 0.5) {
if ((int) (n / 6) != n / 6 && (int) ((n - 2.5) / 6) != (n - 2.5) / 6) {
n += 0.5;
}
hz = f0 * Math.pow(2, n / 6.0);
try {
Tone.sound(hz, 100, 1);
} catch (LineUnavailableException e) {
e.printStackTrace();
}
}
}