FIR Filter in MATLAB
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I've seen in MATLAB FIR Filter, that we can use the function 'designfilt', to obtain value from Filter coefficients regarding some specification(cut off frequency, order, etc...). My question is, on the other side, if we already have the filter coefficients, let's say 1x31 coefficients vektor, can we retrieve its specifications(order,cutoff frequency,ripple...)? Maybe using a function in MATLAB,which is i'd like to know.
0 commentaires
Réponses (1)
Star Strider
le 30 Nov 2016
Use the freqz function to get the transfer function. You would have to calculate the ripple yourself, but that is not difficult. (The findpeaks function would help with that.) The order is the order of the denominator polynomial. You would have to know the sampling frequency to get the cutoff frequency in Hz, although it would again be straightforward to calculate it in radian frequency (on the interval (0,pi)) from the transfer function.
8 commentaires
Voir également
Catégories
En savoir plus sur Multirate Signal Processing 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!