Magnitude and phase graph of DTFT

1. How do you find the phase and magnitude of a DFT?
2. How do you plot magnitude and phase?
3. How do you find the magnitude and phase of a signal?
4. What is the difference between phase and magnitude?

How do you find the phase and magnitude of a DFT?

The graph of |X(f)| against frequency is known as the magnitude spectrum. The graph of arg X(f) against frequency is known as the phase spectrum. From a real signal at a sampling rate F_s, the DFT provides N harmonic amplitudes at frequencies from 0 to .

How do you plot magnitude and phase?

For a rough sketch, you can eyeball or measure the distance of the poles and zeros to a point on the unit circle, multiply/divide to get a magnitude, and sum/difference the angles from the poles and zeros to that point to get a phase. A protractor and ruler might be useful.

How do you find the magnitude and phase of a signal?

To obtain the amplitude response, we take the absolute value of H(jω). To do this, we evaluate the magnitude of the numerator and the denominator separately. To obtain the phase response, we take the arctan of the numerator, and subtract from it the arctan of the denominator.

What is the difference between phase and magnitude?

The magnitude corresponds to the frequency of the size wave, and the phase corresponds to where it hits zero.