What is the expression for cutoff frequency in terms of stop band gain?
(a) \(\frac{\Omega_S}{(10^{-K_S/10}-1)^{1/2N}}\)
(b) \(\frac{\Omega_S}{(10^{-K_S/10}+1)^{1/2N}}\)
(c) \(\frac{\Omega_S}{(10^{K_S/10}-1)^{1/2N}}\)
(d) None of the mentioned
I have been asked this question by my school principal while I was bunking the class.
My query is from Design of Low Pass Butterworth Filters in division Digital Filters Design of Digital Signal Processing