Digital echo attenuation circuit for a telephone system

Details Digital echo attenuation circuit for a telephone system Digital echo attenuation circuit for a telephone system

1977-11-23

1978-10-31

Claffy, Kathleen H.

1791706, H04B 320

Patent

active

041236262

ABSTRACT:
A digital echo attenuation circuit for a two-wire-four-wire local telephone circuit in which each digital sample of the transmit and receive signals is compared directly and the results used to augment an accumulator. Once the accumulator reaches a certain threshold level, its output controls a digital pad to attenuate the receive signal and thereby prevent severe distortion and near singing effects.

REFERENCES:
patent: 3673355 (1972-06-01), La Marche et al.
patent: 3896273 (1975-07-01), Fariello
patent: 3906172 (1975-09-01), Hoeschele, Jr. et al.
patent: 3937907 (1976-02-01), Campanella et al.
patent: 4051332 (1977-09-01), Izumi et al.

Affiliated with

Also associated with

Rating

Digital echo attenuation circuit for a telephone system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital echo attenuation circuit for a telephone system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital echo attenuation circuit for a telephone system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1836264