Digital lattice filter

Details Digital lattice filter Digital lattice filter

1988-05-04

1989-11-28

Harkcom, Gary V.

Boots, shoes, and leggings

381 51, G06F 1531

Patent

active

048842303

ABSTRACT:
A digital lattice filter, comprising a plurality of identical stages each having a pair of inputs for receiving input signals and a pair of outputs for supplying output signals, these stages being connected in a cascade arrangement, each stage consisting in two mutually linked branches and no less than one of these branches comprising delay means, and in that always an even number of successive cascaded filter stages forms a group, in which both branches of each group of filter stages comprise a delay elements such that the time delay in the first branch is equal to the time delay in the second branch.

REFERENCES:
patent: 4209844 (1980-06-01), Brantingham et al.
patent: 4398262 (1983-08-01), Williams
patent: 4554858 (1985-11-01), Wachi et al.
patent: 4695970 (1987-09-01), Renner et al.
Kimura, "Generalized Schwarz Form and Lattice-Ladder Realizations of Digital Filters", IEEE Trans. on Circuits & Systems, vol. CAS-32, No. 11, Nov. 1985, pp. 1130-1139.
Gray et al., "Digital Lattice and Ladder Filter Synthesis", IEEE Trans. on Audio and Electroacoustics, vol. AU-21, No. 6, Dec. 1973, pp. 491-500.

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