Question

how can i analyze a signal with three coordinates
i have a signal from an accelerometer with 3 coordinates x,y, z. how do i analyze this signal so i have all three cordinates? D...

environ 12 ans il y a | 2 réponses | 0

Question

How can i write the frequency vector for frequency range 5-400 hz using 50 frequncy points
How can i write the frequency vector for frequency range 5-400 hz using 50 frequncy points

environ 12 ans il y a | 2 réponses | 0

Question

how is a Shock response spectrum estimated
How can i calculate the shock response spectrum from a time data in matlab. I have an acceleration signal. I have no idea

environ 12 ans il y a | 1 réponse | 0

Question

input arguments of type 'double'.
Hi I am running a function with a .mat file and i get the response that the function is not defined for input argument of the ...

environ 12 ans il y a | 1 réponse | 0

Question

View a surface plot from the top
I want to view a surface plot from the top and i used view(0,90) but still can see the plot except i rotate it. please i would l...

environ 12 ans il y a | 4 réponses | 1

Question

scaling for periodic signal using hann window
How can i scale for periodic signal using hann window. i know for flattop i.e 1/sum(window)but i do not know how to scale with ...

plus de 12 ans il y a | 1 réponse | 0

Question

DFT
How do i calculate DFT in matlab? I do not want FFT.

plus de 12 ans il y a | 5 réponses | 0

Question

Hanning Window
Why is the Hanning window function best for random signal analysis?

plus de 12 ans il y a | 2 réponses | 0

Question

why is the magnitude of a window 1?
Why does windows generally have a magnitude of 1?

plus de 12 ans il y a | 2 réponses | 0

Question

Magnitude of a filter
Why does filters generally have a magnitude of 1?

plus de 12 ans il y a | 1 réponse | 0

Question

fft scalloping or window effect
why is the magnitude higher in the plot below without using the flattop window than when it is used. I thought the flattop windo...

plus de 12 ans il y a | 5 réponses | 0

Question

integration
I want to integrate an RPM signal, how do i integrate it? It is an n*m matrix. I use matlab version R2010b.

plus de 12 ans il y a | 2 réponses | 0

Question

average
i have a 42*16384. how do i average it so that i get a new matrix of size 42*2048 (if N=2048 represents one revolution and N=163...

plus de 12 ans il y a | 1 réponse | 1

Réponse apportée
Difference in continuous wavelet transform & Continuous fourier transform
The matlab CWT is discrete wavelet transform and it has orthogonal wavelet functions. But the nonorthogonal is not discrete CWT...

plus de 12 ans il y a | 0

Question

plot3
how do a plot3 of a wavelet tranform showing time, scale and wavelet coefficients

plus de 12 ans il y a | 3 réponses | 0