Browse Prior Art Database

Improvement to Echo Cancellers

IP.com Disclosure Number: IPCOM000035329D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Roulier, G [+details]

Abstract

In a digital voice transmission system, as represented in the figure, some of the remote speech to be provided to the user at the local speech terminal is, in fact, fed back to the originator as an echo. Echoes are due to mismatching in the hybrid transformer (H) load impedance. They are generally very troublesome and as much as possible should be removed.