How to plot time vs frequency in a wavelet transform?
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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
回答 (2 件)
Jamais avenir
2013 年 7 月 21 日
0 投票
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
2014 年 4 月 15 日
編集済み: Lisa Justin
2014 年 4 月 16 日
0 投票
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
カテゴリ
ヘルプ センター および File Exchange で Continuous Wavelet Transforms についてさらに検索
2014 年 4 月 16 日
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