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Wave digital filters with reduced number of delays

โœ Scribed by Alfred Fettweis

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
628 KB
Volume
2
Category
Article
ISSN
0098-9886

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โœฆ Synopsis

Abstract

A method is described which allows one to design wave digital filters with a reduced number of excess delays. It consists in first multiplying all impedances of the original LCโ€filter either by ฯ• = tanh (pT/2) or by 1/ฯ•, similar to what has been proposed by Bruton, although for different reasons, for active filter design. The restrictions inherent in this latter case do not apply, but some structures are preferable over others. The excellent sensitivity properties of wave digital filters still hold; they can again be proved directly by a modification of the earlier concepts of pseudopower, pseudopassivity, and pseudoโ€losslessness.

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