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.
Read moreWhat is FFT amplitude?
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.
Read moreWhat is meant by Fourier spectra?
[‚fu̇r·ē‚ā ‚spek·trəm] (physics) A plot of the magnitude and phase of the Fourier transform of a function .
Read moreHow do you find the amplitude spectrum of a Fourier series?
The shape of the amplitude spectrum is determined by the function sin( f ) f π τ π τ . the single rectangular pulse of width τ contains all frequencies between 0 and ∞. the relative amplitudes (ignoring the overall amplitude factor) of these frequencies is given by the function sin( f ) f π τ π τ .
Read moreWhat does the amplitude spectrum mean?
The amplitude spectrum simply gives amplitude at each frequency . The phase spectrum simply gives the phase at each frequency (Figure 2.20).
Read moreWhat is amplitude and phase spectrum of Fourier series?
Two-Sided Spectra 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) .
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