Rank: 25082 based on downloads (last 30 days) and 0 files submitted

Getnet Kassa

E-mail: get_kassa@yahoo.com
Company/University: Bahir Dar University

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Top Tags Applied by Getnet	1 - 5 of 8
application, example, fft, graphics, gui

Files Tagged by Getnet					1 - 1 of 1
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
16 Jul 2008		Sound Card Spectral Analyser GUI Acquire data from soundcard and plot in time and frequency domains Author: Rodney Thomson	graphics, fft, example, application, soundcard, object oriented	61	0

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Type	Description
File	Sound Card Spectral Analyser GUI
File	fft

Files Matching Getnet's Watch List				View all 1 - 2 of 2
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
28 Mar 2009	fft fft code written my me Author: ustc huan	fft, signal processing	55	2	1.0 1.0 \| 2 ratings
16 Jul 2008	Sound Card Spectral Analyser GUI Acquire data from soundcard and plot in time and frequency domains Author: Rodney Thomson	graphics, fft, example, application, soundcard, object oriented	61	0

Comments and Ratings Matching Getnet's Watch List			1-2 of 2
Date	File	Comment by	Comments	Rating
30 Mar 2009	fft fft code written my me	Hal 9000	This file is full of garbage. How is this supposed to run?	1
30 Mar 2009	fft fft code written my me	Duane Hanselman	Why is the Database Toolbox required? Here is what is in this file: function xn=myfft(x) N=length(x);%È¡Êý×é³¤¶È M=log2(N);%ÇóÊý×é³¤¶ÈÒÔ2Îªµ×µÄÃÝ %´Ë´¦½«Êý×éxÅÅÐò³Éxtmp %»ù±¾Ë¼Ïë£º½«Ã¿Î»x(i)ÖÐµÄiµÄÖµ»»Ëã³É2½øÖÆ£¬Ã¿´Î½«×îµÍÎ»È¡³ö±£´æµ½³¤¶ÈÎªMµÄÊý×éÖÐ %¸ÃÊý×éµÄ´ÓµÚMÎ»µ½µÚ1Î»ÅÅ¿ª¾ÍÊÇÅÅÐòºóµÄÎ»ÖÃµÄ¶þ½øÖÆ±íÊ¾ %½«¸ÃÊý×é»»Ëã³ÉÊ®½øÖÆµÄÊý¾ÍÊÇÐòÊýÖØÅÅºóµÄÐòÊýpos£¬ÔÙ½«x(i)¸³Óèxtmp(pos) %ÓÉÓÚmatlabÖÐÊý×é´Ó1¿ªÊ¼£¬¹ÊÓ¦Îªx(pos+1)=x(i+1) xtmp=zeros(1,N); value=zeros(1,M); for i=0:N-1 repr=i; for t=1:1:M repr=bitshift(i,1-t); value(t)=bitand(repr,1); end pos=0; for k=1:1:M pos=pos+value(k)2^(M-k); end xtmp(pos+1)=x(i+1); end %xtmp=x; %fftÖ÷º¯Êý %Ö÷ÒªË¼Ïë£º¹²ÓÐM²ã¼ÆËã %Ã¿²ã°üÀ¨width¿é¼ÆËã£¬Ã¿¿é¼äÏà¾à2^iµÄ¾àÀë£¨iÎªµÚi²ã£© %Ã¿¿é¼ÆËã°üÀ¨deepth¸öµûÐÎÔËËã for i=1:M deepth=2^(i-1); width=2^(M-i); for t=1:2^i:N for k=1:deepth tmp=xtmp(t+k-1); wn=width(k-1); xtmp(t+k-1)=tmp+exp(-j2piwn/N)xtmp(t+k+deepth-1); xtmp(t+k+deepth-1)=tmp-exp(-j2piwn/N)xtmp(t+k+deepth-1); end end end xn=xtmp;	1

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