Matlab fft phase response square wave

1. What is the FFT of a square wave?
2. How do you find phase response in Matlab?
3. How do you make a square wave function in Matlab?
4. How do you calculate phase in FFT?

What is the FFT of a square wave?

In the frequency domain, the overall average of a signal is its content at DC or 0Hz -- so that's why there's a peak at 0Hz. The FFT of a square wave that is centered on 0V has energy at every odd harmonic, starting at 1.

How do you find phase response in Matlab?

You can also click the Magnitude and Phase Response button on the toolbar or select Analysis > Magnitude and Phase Response to display the plot.

How do you make a square wave function in Matlab?

Description. x = square( t ) generates a square wave with period 2π for the elements of the time array t . square is similar to the sine function but creates a square wave with values of –1 and 1. x = square( t , duty ) generates a square wave with specified duty cycle duty .

How do you calculate phase in FFT?

y = fft(data,NFFT)/count; You have to normalise the result by the length of the original data (the 'energy' in the original signal) to get the correct amplitudes for the double-sided Fourier transform. (To get the correct amplitudes for the single-sided Fourier transform, you coded it correctly in multiplying it by 2.)