Method of and apparatus for echo detection in voice channel sign

Details Method of and apparatus for echo detection in voice channel sign Method of and apparatus for echo detection in voice channel sign

1980-09-16

1982-12-14

Popek, Joseph A.

H04B 320

Patent

active

043639380

ABSTRACT:
To detect echoes on a transmit path of signals on a receive path, an echo detector stores averages of the signals on the receive path each for a period equal to or just greater than the maximum end delay for received signals to reach the transmit path, and determines the greatest magnitude of the stored signals. This greatest magnitude, reduced by the worst case echo return loss, is compared with the current signal average on the transmit path, and an echo decision is produced in dependence upon this comparison and a detection of speed signals on each of the transmit and receive paths. The echo detector is particularly useful in a digital speech interpolation transmission system.

REFERENCES:
patent: 3896273 (1975-07-01), Fariello
patent: 3985979 (1976-10-01), Durand et al.
patent: 4028506 (1977-06-01), Araseki et al.
patent: 4029912 (1977-06-01), Geigel et al.
patent: 4051332 (1977-09-01), Izumi et al.
patent: 4088851 (1978-05-01), Gupta et al.
patent: 4192979 (1980-03-01), Jarkowski, Jr.

Affiliated with

Also associated with

Rating

Method of and apparatus for echo detection in voice channel sign does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and apparatus for echo detection in voice channel sign, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for echo detection in voice channel sign will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1202388