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The analysis and implementation of digital filters using a special purpose CAD tool

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3 Author(s)
L. E. Turner ; Dept. of Electr. Eng., Calgary Univ., Alta., Canada ; D. A. Graham ; P. B. Denyer

The authors describe DIGICAP, a tool for use in the design and implementation of digital filters. DIGICAP will generate digital filter modules for the FIRST silicon compiler as well as digital filter subprograms to execute on general-purpose computers or special-purpose digital signal processors such as the TMS320 series. DIGICAP accepts as input a compact, high-level signal flow graph description of a digital filter. It allows the digital filter designer to rapidly evaluate the performance of different filter structures and implementation methods, including the effects of finite-precision arithmetic, and thus make structural and implementation choices that affect the critical constraints. The implementation of a particular second-order transfer function using three different recursive digital filter structures is considered as an example

Published in:

IEEE Transactions on Education  (Volume:32 ,  Issue: 3 )