FFT, PSD, and CSD

版本 1.0.3 (2.9 KB) 作者: Ayad Al-Rumaithi
Fast Fourier Transform, Powder Spectral Density, and Cross Spectral Density
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更新时间 2024/9/15

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function Result=FFT(x, Fs)
Fast (Discrete) Fourier Transform of a Signal
inputs
x : input sequence (1*Ndata)
Fs: sampling frequency
outputs
Result structure consists of
Result.f : frequency (1*NumUniquePts)
Result.MX : amplitude (1*NumUniquePts)
Result.Arg : Phase Angle (1*NumUniquePts)
------------------------------------------------------------------
function Result=PSD(x, Fs,window,N,p)
Power Spectral Density of a Signal (This function do the averaging for the spectral density)
inputs
x : input sequence (1*Ndata)
Fs: sampling frequency
window : window size
N: Number of windows
p: overlap ratio of windows
outputs
Result structure consists of
Result.f : frequency (1*NumUniquePts)
Result.MX : amplitude (1*NumUniquePts)
------------------------------------------------------------------
function Result=CSD(x,y,Fs,window,N,p)
Cross Spectral Density of a Signal (This function do the averaging for the spectral density)
inputs
x : input sequence 1 (1*Ndata)
y : input sequence 2 (1*Ndata)
Fs: sampling frequency
window : window size
N: Number of windows
p: overlap ratio of windows
outputs
Result structure consists of
Result.f : frequency (1*NumUniquePts)
Result.MX : amplitude (1*NumUniquePts)
Result.Arg : Phase Angle (1*NumUniquePts)

引用格式

Ayad Al-Rumaithi (2024). FFT, PSD, and CSD (https://www.mathworks.com/matlabcentral/fileexchange/69634-fft-psd-and-csd), MATLAB Central File Exchange. 检索来源 .

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版本 已发布 发行说明
1.0.3

Added Website
1.0.2

description
1.0.1

Functions are fixed regarding normalization. Description is added
1.0.0