I have a code that aims to produce sine waves for durations of interest. in line related to creating sine wave, it's written:
tone_dur = sin(2*pi*freqs*t);
t is the number of samples needed for each tone duration and freq is the tone frequence (500 Hz). What I don't get is that why should we multiply the number of samples with sound frequency to calculate the sine wave? I don't get the rational!