A cosine curve is graphed similarly to a sine curve, but is out of phase with it. In particular, a sine wave crosses the center line at each interval of pi (π), whereas a cosine wave peaks at ...

We saw in the last installment that a sine wave and a cosine wave are the same except for phase and you can model them like this: y=A*cos(2πft+Φ). If the phase angle (Φ) is -90 degrees, you ...

Summed up briefly, the trick is to generate a square wave first. According to Fourier theory, a square wave is made up of a fundamental sine wave and an infinite number of odd harmonics. So, route the ...