Scales at continuous WT and wcoher
1 view (last 30 days)
Show older comments
Hello, I still cant quite understand what scales should I choose to examine my signal. Lets say sampling frequency of my signal is 2048Hz and I want to analyze frequencies "pseudofrequencies" rom 1Hz to 60Hz. What scales should I use? According to scal2freq function it would be 16:1048 a but according to Matlab tutorial it is:
dt = 1/2048;
NumVoices = 32;
a0 = 2^(1/NumVoices);
wavCenterFreq = 5/(2*pi);
minfreq = 20;
maxfreq = 500;
minscale = wavCenterFreq/(maxfreq*dt);
maxscale = wavCenterFreq/(minfreq*dt);
minscale = floor(NumVoices*log2(minscale));
maxscale = ceil(NumVoices*log2(maxscale));
scales = a0.^(minscale:maxscale).*dt;
And that gives completly different results. Thank you for help!
0 Comments
Accepted Answer
More Answers (0)
See Also
Categories
Find more on Wavelet Toolbox in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!