Explanation: The rate at which the gain of the filter changes in the stop band is determined by the order of filter. So, for a low pass filter the gain decreases at the rate of 20dB/decade. 6. Which among the following has the best stop band response?
A. Butterworth filter
B. Chebyshev filter
C. Cauer filter
D. All of the mentioned
Answer:A
Explanation: The rate at which the gain of the filter changes in the stop band is determined by the order of filter. So, for a low pass filter the gain decreases at the rate of 20dB/decade. 6. Which among the following has the best stop band response?
A. Butterworth filter B. Chebyshev filter C. Cauer filter D. All of the mentioned
Explanation: The cauer filter has a ripple pass band and a ripple stop band. So, generally cauer filter gives the best stop band response among the three. 7. Determine the order of filter used, when the gain increases at the rate of 60dB/decade on the stop band.