How to plot time vs frequency in a wavelet transform?

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Ajay
Ajay il 1 Lug 2013
Modificato: Lisa Justin il 16 Apr 2014
By using CWT we get the time vs scale plot but to get directly frequency for the corresponding time in a wavelet transform which function or code is used

Risposte (2)

Jamais avenir
Jamais avenir il 21 Lug 2013
Hi, Good question! the scal2frq function shows the corespondent frequencies for each scales. freq = scal2frq(scales,wname,1/Fs); can help you, the Fs is sampling rates.Aslo I have a question too.how did you get time-scale or time-freq plot.I want to have the 2-D plot of frequencies which are involve in a 1-D signal. also take a look at this question and comments please. http://www.mathworks.com/matlabcentral/answers/76023-proper-wavelet-scaling-restricted-frequency-analysis

Lisa Justin
Lisa Justin il 15 Apr 2014
Modificato: Lisa Justin il 16 Apr 2014
Convert scale to frequency by
frequency= 1/0.033*scale
see http://www.bth.se/fou/cuppsats.nsf/all/315e9a86357c82d8c1257b0b002cc52e/$file/BTH%202013%20Ibeh.pdf

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