Digital filter

Details Digital filter Digital filter

1982-04-20

1984-12-11

Smith, Jerry

Boots, shoes, and leggings

G06F 738, G06F 1531, H04N 324

Patent

active

044882513

ABSTRACT:
A digital filter, in which n+1 sampled values of a digital signal are used for averaging, comprising means for delaying the input digital signal by n+1 sampling periods .tau. and means for subtracting the delayed signal from the undelayed signal. The difference values so formed are accumulated in an accumulator comprising an adder with a feedback path having a delay of one sampling period. Considerable simplification is obtained compared with conventional digital filters which use an adder with n+1 inputs.

REFERENCES:
patent: 3388241 (1968-06-01), Isaacs
patent: 3980873 (1976-09-01), Mattei
patent: 4016410 (1977-04-01), Eggermont
patent: 4356558 (1982-10-01), Owen et al.
Urkowitz, H., "Analysis and Synthesis of Delay Line Periodic Filters", IRE Transactions on Circuit Theory, Jun. 1957, pp. 41-53.

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