Elementary Digital Filter Theory
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Special cases and examples
- The sum of positive real functions is positive real.
- The difference of positive real functions is conditionally positive real.
- The product or division of positive real functions is conditionally PR.
PR
not PR for
.
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| Copyright © 2000-09-19 by Julius O. Smith III, Adpated from Techniques for Digital FilterDesign and System Identification, with Application to the Violin, Julius O. Smith III, Ph.D. Dissertation, CCRMA, Department of Electrical Engineering, Stanford University, June 1983.. This is an original HTML version reproduced by permission. |
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