Switching type echo canceler

Details Switching type echo canceler Switching type echo canceler

1995-11-13

1997-02-18

Brown, Thomas W.

Telephonic communications

Subscriber line or transmission line interface

Network interface device

379406, 379411, 379390, H04M 900

Patent

active

056047991

ABSTRACT:
A switching type echo canceler includes speech sample storing RAMs on a line side and on a handsfree device side, tap coefficient storing RAMs on the line side and on the handsfree device side, a pseudo echo generation unit, a tap coefficient updating unit, a level comparison unit for comparing input signals on the line side and on the handsfree device side, and a plurality of switches for switching between the line- and hands-free-device-side echo cancel operations in accordance with a switching signal from the level comparison unit.

REFERENCES:
patent: 4064378 (1977-12-01), Kitayama et al.
patent: 5008923 (1991-04-01), Kitamura et al.
patent: 5430796 (1995-07-01), Komoda et al.

Affiliated with

Also associated with

Rating

Switching type echo canceler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching type echo canceler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching type echo canceler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1607821