What is FFT amplitude?

The Fourier amplitude spectrum of strong earthquake acceleration is one of the most direct and common . functions used to describe the frequency content of strong earthquake shaking .’ It is used in source. mechanism studies, where its amplitudes and the parameters describing its shape can be related to the slip on.

The amplitude of the FFT is related to the number of points in the time-domain signal . Use the following equation to compute the amplitude and phase versus frequency from the FFT.

[‚fu̇r·ē‚ā ‚spek·trəm] (physics) A plot of the magnitude and phase of the Fourier transform of a function .