Difference between single sided and double sided amplitude spectrum

1. What is single sided and double sided spectrum?
2. What is a two-sided FFT?
3. What is a one sided Fourier transform?
4. What does the amplitude spectrum tell us?

What is single sided and double sided spectrum?

A two-sided power spectrum displays half the energy at the positive frequency and half the energy at the negative frequency. Therefore, to convert a two-sided spectrum to a single-sided spectrum, you discard the second half of the array and multiply every point except for DC by two, as shown in the following equations.

What is a two-sided FFT?

The two-sided results from the analysis functions include the positive half of the spectrum followed by the negative half of the spectrum, as shown in Figure 1. In a two-sided spectrum, half the energy is displayed at the positive frequency, and half the energy is displayed at the. negative frequency.

What is a one sided Fourier transform?

"The one-sided Fourier transform has only positive frequency components and its amplitude is twice the amplitude of the double-sided Fourier transform." Perhaps it would be good to define "one-sided Fourier Transform".

What does the amplitude spectrum tell us?

The amplitude spectrum simply gives amplitude at each frequency. The phase spectrum simply gives the phase at each frequency (Figure 2.20).