代码搜索：如何学习 FFt？
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www.eeworm.com/read/216443/15007047
m dft.m
function f=dft(f,N,dim);
%DFT Normalized Discrete Fourier Transform
% Usage: f=dft(f);
% f=dft(f,N,dim);
%
% This function computes a normalized discrete Fourier transform. This
% is
www.eeworm.com/read/215197/15070774
m melbankm.m
function [x,mn,mx]=melbankm(p,n,fs,fl,fh,w)
%MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W)
%
% Inputs: p number of filters in filterbank
% n length of fft
www.eeworm.com/read/214970/15081460
m melbankm.m
function [x,mn,mx]=melbankm(p,n,fs,fl,fh,w)
%MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W)
%
% Inputs: p number of filters in filterbank
% n length of fft
www.eeworm.com/read/214339/15105213
log cc_build_debug.log
------------------------------ fft.pjt - Debug ------------------------------
Build Complete,
0 Errors, 0 Warnings, 0 Remarks.
www.eeworm.com/read/208657/15239806
m ffte.m
function fre=ffte(y,u,n)
% fre=ffte(y,u,n) very rough fft based transfer function estimate
% Each column of y,(u) contains the story of the related output,(input).
% n is the number of points in
www.eeworm.com/read/167220/5461912
m iharw.m
function y=iharw(x,N)
for j=-1:(log(N/2)/log(2))
if(j==-1)
a(1)=fft(x(1:1),1);
else
a((2^j)+1:(2^(j+1)))=fft(x((2^j)+1:(2^(j+1))),(2^(j+1))-(2^j));
end
end
%a(N/2+
www.eeworm.com/read/475502/6790058
m dffthlp.m
function dffthlp
% DFFTHLP Help file for DFFTGUI
% ADSP Toolbox: Version 2.0
% For use with "Analog and Digital Signal Processing", 2nd Ed.
% Published by PWS Publishing Co.
%
% Ashok Ambar
www.eeworm.com/read/472861/6859004
m ffte.m
function fre=ffte(y,u,n)
% fre=ffte(y,u,n) very rough fft based transfer function estimate
% Each column of y,(u) contains the story of the related output,(input).
% n is the number of points in
www.eeworm.com/read/471097/6896958
m melbankm.m
function [x,mn,mx]=melbankm(p,n,fs,fl,fh,w)
%MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W)
%
% Inputs: p number of filters in filterbank
% n length of fft
www.eeworm.com/read/393582/8274289
log cc_build_custom.log
------------------------------ FFT.pjt - Custom ------------------------------
Build Complete,
0 Errors, 0 Warnings, 0 Remarks.