a += M_PI * 1000.0 * 2.0 / sample_rate;
}
- /* 1 second of varing frequency between 100 and 10000 Hz */
+ /* 1 second of varying frequency between 100 and 10000 Hz */
a = 0;
for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
v = sin(a) * 0.30;