Fourier+Transform 源代码

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源码文件

function [K] = IBR (J,NU) % This function is used by Fast Fourier Transform (Algorithm 8.3) % to perform bit reversal. J1 = J;…

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function y = fracft(x, a) % fracft -- compute the fractional Fourier transform % % Usage % y = fracft(x, a) % % Inputs % x…

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% uses setup from demo0 disp('Decaying Exponential (1st order) and its Spectrum') disp('Generate time and frequency steps') Ts=T…

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% uses setup from demo0 disp('Decaying Exponential Sinewave and its Spectrum') disp('Generate time and frequency steps') Ts=Tp/(…

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% uses setup from demo0 disp('Decaying Exponential (1st order) and its Spectrum') disp('Generate time and frequency steps') Ts=T…

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% uses setup from demo0 disp('Decaying Exponential Sinewave and its Spectrum') disp('Generate time and frequency steps') Ts=Tp/(…

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%---------------------------------------------------------------------------- % exa030102, for example 3.1.2 % to obtain the Fou…

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S=fft(s,512); SF=fft(sf,512); w=(0:255)/256*(Fs/2); plot(w,abs([S(1:256)' SF(1:256)'])); xlabel('Frequency (Hz)'); ylabel('Ma…

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function x = ifratf(y, m) % IFRATF Inverse Finite Radon Transform % % x = ifratf(y, [m]) % % Input: % y: a…

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