Digital filter having a switching matrix and adders

Details Digital filter having a switching matrix and adders Digital filter having a switching matrix and adders

1991-09-16

1993-05-18

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

052126609

ABSTRACT:
In a digital filter, a plurality of delay elements D.sub.1 -D.sub.n are serially connected to one another, and taps for obtaining delay signals being different in delay time from one another are provided at respective connecting portions. Outputs from a plurality of multipliers M.sub.0 -M.sub.3 are added together by an adder A, and the result is outputted to an output terminal of the digital filter. Signal selecting means S.sub.00 -S.sub.3n are switched on or off between the plurality of taps and the input terminals of the plurality of multipliers. The multipliers M.sub.0 -M.sub.3 can be connected to optional taps, and, by use of a relatively small number of multipliers, a plurality of delay signals being different in delay time from one another are formed into a composite output signal while the delay times and the signal levels being widely selected.

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patent: 4771395 (1988-09-01), Kyokai
patent: 4811259 (1989-03-01), Costas
patent: 4933891 (1990-06-01), Schenk
patent: 5034907 (1991-07-01), Johnson et al.
patent: 5040137 (1991-08-01), Sherrill
patent: 5050119 (1991-09-01), Lish

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