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hi, does anyone know how to find out the sinusoidal components in a nonstationary signal at a given instant using wavelet. i can plot the scalogram using the matlab wavemenu GUI , but beyond this , i cant analyze the signal. also i have thought of a scheme which entails plotting fourier transform of a wavelet, which is scaled to a particular value . but then i cant find a way to compute the fourier transform of mother wavelets. any help would be greatly appreciated regards shivraman |
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wavelet analysis using matlab wavemenu GUI
Started by ●July 3, 2003
Reply by ●July 3, 20032003-07-03
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Hi, Maybe you need to use Matching Pursuit, which is based in gabor function for the decomposition of a signal, at http://brain.fuw.edu.pl/mp/ you can find a interactive display of its use, matlab functions, even source code in c and java. With respect to scalogram you must think in scales instead of frequencies, anyway you can link both through the functions scal2frq and centfrq, you should also review http://www.engmath.dal.ca/courses/engm6610/notes/node3.html Regards, Marco -----Mensaje original----- De: shivraman giri [mailto:] Enviado el: jueves 3 de julio de 2003 02:38 Para: ; ds c data; ; ; ; ; Asunto: [matlab] wavelet analysis using matlab wavemenu GUI hi, does anyone know how to find out the sinusoidal components in a nonstationary signal at a given instant using wavelet. i can plot the scalogram using the matlab wavemenu GUI , but beyond this , i cant analyze the signal. also i have thought of a scheme which entails plotting fourier transform of a wavelet, which is scaled to a particular value . but then i cant find a way to compute the fourier transform of mother wavelets. any help would be greatly appreciated regards shivraman _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: To Post: To Leave: Archives: http://www.yahoogroups.com/group/matlab More DSP-Related Groups: http://www.dsprelated.com/groups.php3 ">http://docs.yahoo.com/info/terms/ |
