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Jan Ali


Last seen: 11 mesi ago Active since 2020

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What is the unit for instantaneous energy on the color bar in the Hilbert spectrum
When applying hht(imf,fs) we get Hilbert spectrum showing a colorbar on the right for the instantaneous energy. I am wonderin to...

12 mesi ago | 1 answer | 1

1

answer

Question


How to find the time of the max peak in a signal?
I have a signal data (x) which is 2s long. There is a peack on the signal that I can find with the findpeaks(x) function. I a...

12 mesi ago | 1 answer | 0

1

answer

Question


How to get residual and other info in eemd?
Hello everyone! I am using the IMF = eemd(y,aim,NR,Nstd) function. I get only IMF info, but when I want to put more out put arg...

12 mesi ago | 1 answer | 0

1

answer

Question


How to find a value at a certain point/time slot?
Hello everyone! Can anyone help me with finding the value at a specific point/time? For exp. I have a signal to be analyzed, b...

12 mesi ago | 1 answer | 0

1

answer

Question


How to find max value of a vector in a certain time interval?
I want to find a max value in a spesific time span. For exp. I have a segment of a signal from 26 to 28 s. Does any one know h...

circa un anno ago | 1 answer | 0

1

answer

Question


What is the unit for measures on the colorbar in Hilbert spectrum?
When applying hht(imf,fs) we get Hilbert spectrum showing a colorbar on the right. I am wonderin to know what the unit for those...

circa un anno ago | 0 answers | 0

0

answers

Question


What are the measures/scales on the colorbar in Hilbert spectrum?
When applying hht(imf,fs) we get Hilbert spectrum showing a colorbar on the right. What are those values/measures on the color b...

circa un anno ago | 1 answer | 0

1

answer

Question


How to assign time on x-axis in emd?
I am using the built in function emd(x), but I can't get the time periode I used for the signal, instead there are samples on t...

circa un anno ago | 1 answer | 0

1

answer

Question


How to plot actual amplitude on the colorbar using STFT (spectrogram)
I am using built in spectrogram function and it automatically plots the power/frequency (dB/Hz) values on the colorbar on the ri...

circa un anno ago | 1 answer | 0

1

answer

Question


How to plot actual time on x-axis in emd
I am using the built in function for EMD, but I can't get the time periode I used for the signal. Can anyone help me with assig...

circa un anno ago | 1 answer | 0

1

answer

Question


What is the reference magnitude/amplitude for calculating dB in the power colorbar using STFT?
When plotting a STFT of a signal, the colorbar on the right shows power density in dB. What is the reference magnitude/amplitude...

circa un anno ago | 2 answers | 0

2

answers

Question


What is the reference for the power/frequency scale bar on the right in Spectrogram?
Dear experts, Can anyone help me how to get the power/frequency scale in Spectrogram using STFT? What is the reference for the...

circa un anno ago | 0 answers | 0

0

answers

Question


How to plot spectrogram in actual time period?
Does anyone know how to plot actual time interval in Spectrogram using STFT? I want to analyze an event in a signal in a certai...

circa un anno ago | 0 answers | 0

0

answers

Question


How to plot scalogram in time period?
Hi eveyone! I want to analyze an event in a signal in a certain time span, but using the cwt(x, fs) built in function plots in ...

circa un anno ago | 3 answers | 0

3

answers

Question


How analyze PMU data in the form of sinusoidal waveform?
Dear experts. I need your help with PMU dataset analysis. I am wondering how to plot sinusoidal waveform if we have PMU data t...

circa un anno ago | 1 answer | 0

1

answer

Question


power grid 3 phase 230 V dataset analysis
Dear experts, Can anyone help me with analysis of dataset for 3 phase power system with 230 v? How can I apply the Fourier Tran...

circa un anno ago | 0 answers | 0

0

answers

Question


electric power 3 phase 230 V dataset analysis
Dear members, Can anyone help me with analysis of dataset for 3 phase power system with 230 v within 5 minutes ? The dataset c...

circa un anno ago | 0 answers | 0

0

answers

Question


Problem with running eemd function
Dear experts, I face issue when implementing the eemd function on a power quality signal (y). It is a bit hard to me to realize...

circa un anno ago | 1 answer | 0

1

answer

Question


eemd Matlab code for power quality signal analysis
Any one who could share eemd code for PQ signal analysis? Thanks in advance,

circa un anno ago | 0 answers | 0

0

answers

Question


local domain and global domain
Hi there, Could anyone kindly explain what the "local domain and global domain" is in signal analysis? Aditionally, what does...

oltre un anno ago | 1 answer | 0

1

answer

Question


How to write code for a composite signal with instantaneous frequency
Anyone can help me with writing code for this function?

oltre un anno ago | 1 answer | 0

1

answer

Question


How to apply Hilbert Huang transfer method on the signal Sc(t):
How to run Hilbert spectrum of the following function(signal):

oltre un anno ago | 1 answer | 0

1

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Question


How to write code for a function x(t), consist of two sine wave with instantaneous frequencies at different time spot as seen in figure below:
Could any one help me how to write the Matlab code for this function in order to plot the Hilbert spectrum?

oltre un anno ago | 1 answer | 0

1

answer

Question


(emd) How to get script/code from a figure/plot ?
To plot emd for a function (x), I just write a synthetic signal and when I run emd(x), the signal components (imfs) will be sho...

oltre un anno ago | 1 answer | 0

1

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