Digital echo suppressor

Details Digital echo suppressor Digital echo suppressor

1974-06-13

1976-02-10

Claffy, Kathleen H.

H04B 320

Patent

active

039379078

ABSTRACT:
A low cost digital echo suppressor having break-in logic for overriding send-line interrupt operation. The send and receive signals are multiplexed and digitized. The digitized received signals are summed over a period of time to determine interrupt operation. The difference over a period of time of the receive and send line signals controls break in logic for overriding the interrupt operation.

REFERENCES:
patent: 3562448 (1971-02-01), May, Jr.
patent: 3673355 (1972-06-01), LaMarche et al.
patent: 3821494 (1974-06-01), Besseyre
patent: 3823275 (1974-07-01), Lamarche et al.

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