FFT, PSD, and CSD

버전 1.0.2 (2.82 KB) 작성자: Ayad Al-Rumaithi
Fast Fourier Transform, Powder Spectral Density, and Cross Spectral Density
다운로드 수: 735
업데이트 날짜: 2019/5/15

라이선스 보기

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)

인용 양식

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

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버전 게시됨 릴리스 정보
1.0.2

description

1.0.1

Functions are fixed regarding normalization. Description is added

1.0.0