Method and apparatus for implementing a digital filter employing

Details Method and apparatus for implementing a digital filter employing Method and apparatus for implementing a digital filter employing

1992-05-26

1994-02-15

Mai, Tan V.

Boots, shoes, and leggings

364736, 36472401, 3647505, G06F 752

Patent

active

052872998

ABSTRACT:
Method and apparatus for implementing a digital filter employing coefficients expressed as sums of 2 to an integer power. Coefficients expressed as sums of powers of 2 may be algebraically manipulated such that higher order terms are replaced by an equivalent group of lower order terms. In the context of a shift-and-add algorithm, the lower order terms require fewer shifting operations and less total hardware to effect multiplication than the corresponding higher order terms.

REFERENCES:
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patent: 4679164 (1987-07-01), Rearick
patent: 4709343 (1987-11-01), Van Cang
patent: 4782458 (1988-11-01), Bhattacharya et al.
patent: 4862402 (1989-08-01), Shah et al.
patent: 4974186 (1990-11-01), Duhamel et al.

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