Cutoff frequency in graph
6 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello, I have this code corresponding to a chebyshev filter and the graph that matlab returns to me. The question is, is the upper cutoff frequency that of the green line (0.7 on the y-axis) or that of the black line (0.25 on the x-axis)?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/704512/image.png)
0 commentaires
Réponse acceptée
Chunru
le 6 Août 2021
For cheby filter, the cut-off frequency is the edge frequency at which the magnitude response of the filter is –Rp (passband ripple) decibels. In your plot, it should be somewhere between the black and blue.
3 commentaires
Chunru
le 6 Août 2021
From documentation:
Wp — Passband edge frequency
scalar | two-element vector
Passband edge frequency, specified as a scalar or a two-element vector. The passband edge frequency is the frequency at which the magnitude response of the filter is –Rp decibels. Smaller values of passband ripple, Rp, result in wider transition bands.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Digital Filter Analysis dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!