Using the appropriate MATLAB commands, design a digital order-8(nine \"a\" and \

Question

Using the appropriate MATLAB commands, design a digital order-8(nine "a" and "b" coefficients) Chebyshev type-1 band-stop filter that stops frequencies between 200 and 700 Hz. The pass-band should have a maximum ripple of 1 dB. Assume a samplign frequency of 2000 Hz. List the "a" and "b" coefficient for the digital filter and plot the magnitude frequency response with MATLAB fvtool.

HINT: Design the equivalent analog filter first and then use the MATLAB command impinvar to carry out the digital design. See the MATLAB "help" information for the relevant commands.

Please post all MATLAB code.

Explanation / Answer

The frequency response of the filter is

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