HARMFIT: Sinusoidal harmonic curve fitting

版本 1.1.0.0 (2.7 KB) 作者: François Beauducel
Computes harmonics of a phase signal
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更新时间 2024/3/22

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This is the core formula of discrete Fourier transform: it simply computes the amplitude and phase shift of fundamental or harmonics of a phase signal.
Example:
t = linspace(0,2*pi);
x = 2*cos(t + pi/2) - cos(3*t) + rand(size(t));
harmfit(t,x,1:4)
returns estimations of amplitudes/phases for the first four harmonics.

引用格式

François Beauducel (2024). HARMFIT: Sinusoidal harmonic curve fitting (https://www.mathworks.com/matlabcentral/fileexchange/46736-harmfit-sinusoidal-harmonic-curve-fitting), MATLAB Central File Exchange. 检索时间: .

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版本 已发布 发行说明
1.1.0.0

fix and minor improvements
1.0.0.0