Computer controlled transversal equalizer

Details Computer controlled transversal equalizer Computer controlled transversal equalizer

1993-09-13

1994-10-04

Mai, Tan V.

Boots, shoes, and leggings

G06J 100

Patent

active

053532449

ABSTRACT:
An adjustable equalizer network has a series chain of N all pass amplifier stages driving N+1 scaling circuits connected to a final summing circuit that includes circuitry to adjust the frequency response at M+1 frequency control points to obtain a predetermined ripple free minimum phase shift frequency response over a given frequency range. The scaling circuits have scaling coefficients, of magnitude and sign determined by Fourier analysis and an appropriate truncation function, such that the filter has a pass band representative of M+1 contiguous bands conjointly encompassing the frequency range. Calculation of the scaling coefficients and control of the scaling circuits is accomplished through digital computation and manipulation. Some embodiments may use passive circuits or linear analogue circuits as scaling circuits, controlled manually or by a computing device.

REFERENCES:
patent: 3292110 (1966-12-01), Becker et al.
patent: 4566119 (1986-01-01), Peters
patent: 4751666 (1988-06-01), Gillingham
patent: 4809203 (1989-02-01), Wilson et al.
patent: 5005184 (1991-04-01), Amano et al.

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