চলুন দেখি

Periodic signal: A periodic signal x (t) is a function of time that satisfies the condition – x (t) =x (t + T) .............(1) for all t, Where T is a constant. Clearly, if this condition is satisfied for T = T0 ,say, then it is also satisfied for T = 2T0, 3T0, 4T0,...... The smallest value of T that satisfies the eq-1 is called the fundamental period of x (t). Accordingly, the fundamental period T defines the duration of one complete cycle of x (t). The reciprocal of the fundamental period T is called the fundamental frequency of the periodic signal x (t); it describe how frequently the periodic signal x (t) repeats itsself. we thus formally write- f = 1/T The frequency f is measured in hertz or cycle per second. The angular frequency, measured in radians per second, is defined by- ω = 2πf = 2π/T MORE