John Navarro
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Answer 3 questions that were unanswered for more than 30 days
Awarded to John Navarro on 29 Nov 2021
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Content Feed
Difference between Shannon entropy and shannon entropy from wavelet packet?
I would guess it is because the first equation is evaluating the Shannon entropy of the signal as a series, while the second is ...
9 jours ago | 0
Question
Identification of fundamental frequency and not harmonics in a FFT - using peak locations
Hello I would like to generate my results as similar as I can to the images in red at Figure 6 | Feature extraction of milling ...
environ 2 mois ago | 1 answer | 0
1
answerAnimate 3D Plot View
Great answer, but... Does someone know if it is an updated solution or a easier command for this problem? The accepted solution...
7 mois ago | 0
Question
How to get the FFT peaks from a non stationary signal
Hello I have a signal of 15 seconds with a sampling rate of 20KHz. I need a table with the location of the 3 highest peaks of t...
9 mois ago | 1 answer | 0
1
answerQuestion
Time resolution of Spectral Entropy - How could I modify it?
Hello everyone, I have a signal (a timetable of 307,200 data points) with sampling rate of 20480 Hz (0.00005s) and total length...
9 mois ago | 1 answer | 0
1
answerHow to implement PCA to differentiate the signals from each other.
By PCA did you mean Principal component analysis? If so, PCA does not extract features, it evaluates their correlation and indi...
10 mois ago | 0
Is it possible to join tables with different variables and sizes by filling/padding the missing variables and rows with NaN or similar?
C = outerjoin(A,B,'Keys',{'Common Variable'},'MergeKeys',true) % Where A and B are the corresponding Tables to merge. Then you...
plus d'un an ago | 0
Question
Research program support MathWorks
Hello. I will like to know more about this program of MathWorks to get more support with my PhD project, but I cant find any in...
plus d'un an ago | 3 answers | 0
3
answersQuestion
FFT and PSD - normalize values
Hello. I have noticed many posts regarding frequency spectrum and many answers to the same questions. How to normalize the val...
plus d'un an ago | 1 answer | 0
