Fourier transform before calculating the phase [closed]

1. Why should I zero pad a signal before taking the Fourier transform?
2. Does Fourier transform account for phase?
3. What is the phase of Fourier transform?
4. How do you plot the phase spectrum of a Fourier transform?

Why should I zero pad a signal before taking the Fourier transform?

Zero padding allows one to use a longer FFT, which will produce a longer FFT result vector. A longer FFT result has more frequency bins that are more closely spaced in frequency.

Does Fourier transform account for phase?

The Fourier transform does include phase information. The result of the transform is complex data, a real and imaginary component for each bin. The real and imaginary components contain both magnitude and phase information.

What is the phase of Fourier transform?

Fourier Transform Magnitude and Phase

For any complex quantity, we can decompose f(t) and F(ω) into their magnitude and phase. called the temporal phase, ϕ(t). is called the spectral phase, φ(ω).

How do you plot the phase spectrum of a Fourier transform?

The exponential Fourier series representation of a periodic function x(t) has amplitude coefficients Cn which are complex and can be represented by magnitude and phase. Hence, we can plot the amplitude spectrum (|Cn| versus ω) and the phase spectrum (∠Cnversusω).