ABSTRACT
In this thesis, the typical and complete designs under MATLAB are studied. The typical design gets the technical parameters from digital filters that should be designed, and then transformed into the analog parameters of a low-pass analog filter prototype. The prototype is converted into the analog low-pass, high-pass, band-pass and the band-stop filters respectively, which are transformed into the digital ones.
The complete design uses the given functions and releases the low-pass, high-pass, band-pass and the band-stop filters directly. Butterworth, Chebyshev and Cauer filters are used for the implementations. And each from of frequency respond to the curve are compared.In the direct design method, we make use of the yulewalk function design IIR filter that MATLAB provide.
Key Words: digital filter, typical design, complete design