Find the frequency vector using pwelch function
3 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi all,
I have a seismic signal recorded at 200 Hz. I want to use the pwelch (using a hanning window) to find the spectra but for some reason the frequency vector is wrong (or, altenratively, I don't intepert it correclty).
For example, with 200 Hz sampling frequency, I am supposed to observe frequency range from 0 to 100 Hz in the x axis using the command:
plot(f,10*log10(pxx))
I would appreciate your help!
(please se attached seismic vector)
Thanks!
Ron
0 Commenti
Risposte (1)
Hiro Yoshino
il 24 Mag 2022
Did you pay attention to the Normalized Frequency?
The Power Spectral Density is estimated on the frequency. Its unit is Rad/sample.
0 Commenti
Vedere anche
Categorie
Scopri di più su Spectral Measurements in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!