Frequency

Frequency of a periodic signal with distortions

Frequency of a periodic signal with distortions
  1. What is a periodic frequency?
  2. How frequency components of a signal are determined?

What is a periodic frequency?

Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there are 10 cycles per 2 minutes (also known as 10 cycles per 120 seconds). So the frequency is. f =10 cycles / 120 s = 0.0833 cycles/s.

How frequency components of a signal are determined?

If x is an point segment of , one way to determine its frequency content is to take its discrete Fourier transform (DFT) by using the fast Fourier transform (FFT) to compute it: >> X=fft(x); This gives us an component vector , which in general will be complex valued.

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