Lisa Justin
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Professional Interests: Signal Processing
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Awarded to Lisa Justin on 09 Oct 2019
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Awarded to Lisa Justin on 20 Jul 2017
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Frage
Plotting only highest peaks from multiple signals
Hi, I need to extract only the peaks of three signals so I have one plot without changing the amplitude of the individual plots...
mehr als 4 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
Moving Average using a for loop
Hi, How can I compute the moving average using a for loop and without using convolution (i.e conv()) or the filter function (i....
etwa 10 Jahre vor | 1 Antwort | 0
1
Antwortwhich wavelet transform for image compreesion yields better compression and better PSNR value?
Try complex Morlet Wavelet see http://www.bth.se/fou/cuppsats.nsf/all/315e9a86357c82d8c1257b0b002cc52e/$file/BTH%202013%20Ibe...
etwa 10 Jahre vor | 0
I need to find instantaneous frequency with phase of continuous wavelet transform using complex morlet wavelet as mother wavelet i.e( ridge-plot ) and also with the help of maximum modulus of CWT
Convert scale to frequency by: frequency= 1/0.033.*scale see http://www.bth.se/fou/cuppsats.nsf/all/315e9a86357c82d8c1257...
etwa 10 Jahre vor | 0
How to plot time vs frequency in a wavelet transform?
Convert scale to frequency by frequency= 1/0.033*scale see http://www.bth.se/fou/cuppsats.nsf/all/315e9a86357c82d8c1257...
etwa 10 Jahre vor | 0
Wavelet Transforms using mother wavelets
I recommend you read the master thesis on the link. http://www.bth.se/fou/cuppsats.nsf/all/315e9a86357c82d8c1257b0b002cc52e/$...
etwa 10 Jahre vor | 0
Is it possible to implement continous complex morlet wavelet transform practically ?
You could write your own wavelet script and implement it without using the matlab toolbox. see http://www.bth.se/fou/cuppsats...
etwa 10 Jahre vor | 0
wavelet transform
I think it is best to write your own script see master thesis report could help http://www.bth.se/fou/cuppsats.nsf/all/315e9...
etwa 10 Jahre vor | 0
two data in one plot graph
Sara is correct, you could also use plot(x,y1,'r') hold on plot(x,y2,'b')
etwa 10 Jahre vor | 0
How do I perform envelop on a time signal
see http://www.mathworks.se/matlabcentral/answers/47237-how-to-create-an-envelop-from-three-graphs x = 1:100; y1...
etwa 10 Jahre vor | 0
The difference between the amplitudes of Fourier transform and wavelet transform
It depends on the window function used.
etwa 10 Jahre vor | 0
How do I compute the mean square value of a function
mean square value=mean(y.^2)
etwa 10 Jahre vor | 0
Frage
How can i Resample?
I have two signals measured with different sampling frequencies Signal 1 has a sampling frequency of 999.9917Hz while Signa...
etwa 10 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
How can I compute Kurtosis
How is Kurtosis computed in matlab?
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to compute the Sampling frequency from Time Stamps
Hi, I have the time stamps of a given signal xn, how can i compute the sampling frequency of this signal, it was not given?
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
What is the purpose of Resampling if it doesn't change the original bandwith of the signal?
What is the purpose of Resampling if it doesn't change the original bandwith of the signal? I have a low sampled analog signal, ...
etwa 11 Jahre vor | 1 Antwort | 0
1
AntwortFrage
how noverlap be estimated for 75% percent overlap
How can i estimate 75% overlap? nfft=512 overlap=0.75 noverlap=nfft*overlap is noverlap correct? I get error in my ...
etwa 11 Jahre vor | 1 Antwort | 0
1
AntwortFrage
making different signals equal in length
Hi, I am working with a set of data and i need all of them to be the same length. how can i do this?
mehr als 11 Jahre vor | 3 Antworten | 0
3
AntwortenHow to generate a signal with time varying frequency?
Use wavelet transform or Short time fourier transform. I prefer wavelet tranform for nonstationary signals
mehr als 11 Jahre vor | 0
Frage
How can determine the sampling frequency from a time series data?
i need the sampling frequenccy of a give time series data. it is a 1x31225 time data if i choose any two point say x(:,1) and x...
mehr als 11 Jahre vor | 2 Antworten | 1
2
AntwortenCSV vs MAT files
i have a csv file and want to convert it to a matlab file. how can i do this?
mehr als 11 Jahre vor | 0
Frage
creating an input list from a large data set
Hi! I want to create an input list from a large data set. dir .*csv displays all the csv but when i do dir='C:\Lisajust...
mehr als 11 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
saving a csv file as a .mat file
How can i save a csv file as a .mat file
mehr als 11 Jahre vor | 3 Antworten | 0
3
AntwortenImport CSV file to 2012b make Windows 8 Entire UI hang!
you can try fopen, feof, fgets,regexprep,sscanf and fclose or fid=fopen(filename.csv') a = fread(fid,1,'uint32','l'); ...
mehr als 11 Jahre vor | 0
Frage
How can i read a csv file
How can i read a csv file. i used fopen but it gives a value of -1 A=fopen('slip.csv')
mehr als 11 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
How to create an envelop from three graphs
How can i create an envelop for three different Signals. the edges around the three signals that are top most, so there is an en...
mehr als 11 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Marking the peak of a plot automatically without having to click on it
Hi, Is it possible to mark the peak of a plot automatically with a command without having to to mark on each plot.
mehr als 11 Jahre vor | 4 Antworten | 1
4
AntwortenFrage
how can i have three plots on one graph and save all three plots using one name
I have a loop with four files, how can i have three plots on one graph and save all three plots using each filename? so i get fo...
mehr als 11 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Area of a Spectrum
What matlab command can give me the area of a spectrum. I have shock response spectrum but i need to find the area under the cu...
mehr als 11 Jahre vor | 2 Antworten | 0
2
AntwortenView a surface plot from the top
starting with a value lower than zero for the y-axis fixed it. axis([0 1000 -0.001 110 0 110]) view(0,90) With this...
mehr als 11 Jahre vor | 3
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