Consider the following specification for an ANALOG low pass filter. -- maximum d
ID: 2990877 • Letter: C
Question
Consider the following specification for an ANALOG low pass filter.
-- maximum deviation from unity gain in the passband of 0.4dB
-- minimum attenuation in the stop band of 70dB
-- Passband edge: 400Hz.
-- Stopband edge 500Hz
(a) Find the lowest order Butterworth filter that meets this specification. You must use the Matlab
functions buttap and lp2lp to compute the transfer function and plot the analog magnitude
response and verify that you have met the specification. Also plot the poles and zeros and the
impulse response.
(b) Find the lowest order Chebyshev filter that meets this specification. You must use the Matlab
functions cheb1ap and lp2lp to commpute the transfer function and plot the analog magnitude
response and verify that you have met the specification. Also plot the poles and zeros and the
impulse response.
Explanation / Answer
matlab