Corrective digital filter providing subdivision of a signal into

Details Corrective digital filter providing subdivision of a signal into Corrective digital filter providing subdivision of a signal into

1987-08-10

1989-05-02

LaRoche, Eugene R.

Boots, shoes, and leggings

36472419, G06F 738

Patent

active

048274437

ABSTRACT:
A wave digital filter has one input set to zero and a signal to be distortion-compensated or simply to be subdivided into signals occupying different frequency ranges is supplied at the other input. The attenuation/frequency characteristics of the respective paths from the signal input of the filter to the respective outputs have transmission functions that are complementary to each other. Further subdivision into frequency sub-bands is provided by cascading another such wave digital filter at one or both outputs of the first wave digital filter. The coefficients (g) of the wave digital filters can be used for control purposes. The several outputs of cascaded filters are multiplied by weighting factors and thereafter added together to provide an output compensated against variation of attenuation with respect to frequency to which the input signal has been subjected.

REFERENCES:
patent: 4288872 (1981-09-01), Tamburelli
patent: 4393456 (1983-07-01), Marshall, Jr.

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