Dear All,
I am confused in the calculation the frequency response (amplitude ratio and phase shift). What is the frequency units? Is it rad/sec or hertz?
Radians/sec is a measure of the speed of one cycle so 2*pi / T = omega, where T is the period for one cycle, 2*pi being the angular distance about a circle.
Now with one cycle taking T seconds, the repetition rate is 1/T and the frequency!