I want to obtain Power spectrum of the Voltage Timeseries of Vela Pulsar data given in picture below :thinking: [image] How should i implement FFTW ?

How to find the DFT of a time series using FFTW: using FFTW: fft, fftshift, fftfreq data = ... # your data here fs = ... # specify sampling frequency here # frequencies where the DFT is evaluated: f_range = fftshift(fftfreq(data, fs)) # DFT of data data_f = fftshift(fft(data)) Using fftshift is…

Does DSP.welch_pgram or DSP.periodogram help you?

No , i want to do it using FFTW but its documentation is not having examples. What should i do ?

[image] raman_kumar: What should i do ? [image] GitHub - KronosTheLate/EasyFFTs.jl: An opinionated layer on top of FFTW.jl to... An opinionated layer on top of FFTW.jl to provide simpler FFTs for everyone. - GitHub - KronosTheLate/EasyFFTs.jl: An opinionated layer on top of FFTW.j…

I think FFTW.jl should have more elaborate documentation with example because fft is very useful . :wink:

using DelimitedFiles,Plots ,PlutoUI,HypothesisTests,Statistics,FFTW f=raw"/home/raman/Documents/VELA_Data.txt" M = readdlm(f); @bind data Slider(1000:1000:50000, default=10000) M[1:data:end, 1] g=fftshift(fft(M[1:data:end, 1]),125000) [image] g=fftshift(fft(M[1:data:end, 1]),125000) :thinking: …

Obtain Power Spectrum from Voltage Timeseries

Specific Domains Numerics

rafael.guerra April 8, 2023, 5:20pm 8

You’ve been pointed to this before, but as a reminder please read your older posts.

1 Like

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Obtain Power Spectrum from Voltage Timeseries

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