Abstract
We describe custom designed software oriented for teaching design and analysis of analog and digital filters. The tools described are used as teaching aids and are not intended as substitutes for lectures on the topics covered. The analog filter design covers approximation of the filter functions as well as the design of the active-RC filters stages. The digital filter design part is able to design IIR using transformations from the s-plane. FIR filters are designed using the Remez exchange algorithm. Another part of the software package is in charge of simulating an arbitrary digital filter topology for different wordlengths allowing students to observe the limitations inherent to each topology.
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