Patent · US Active

System and method for acoustic echo cancellation

US9628141B2 · kind B2 · utility

6Cited by

9References

55Claims

0Family size

Assignee

Interactive Intelligence Group, Inc. · US

Inventors

Felix Immanuel Wyss · Indianapolis, US
Rivarol Vergin · Indianapolis, US
Ananth Nagaraja Iyer · Carmel, US
Aravind Ganapathiraju · Hyderabad, IN
Kevin Vlack · Ballwin, US
Srinath Cheluvaraja · Carmel, US

Key dates

Filing date	Oct 22, 2013
Grant date	Apr 18, 2017
Priority date	—
Expiry date	Nov 25, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG10L2021/02082
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A system and method are presented for acoustic echo cancellation. The echo canceller performs reduction of acoustic and hybrid echoes which may arise in a situation such as a long-distance conference call with multiple speakers in varying environments, for example. Echo cancellation, in at least one embodiment, may be based on similarity measurement, statistical determination of echo cancellation parameters from historical values, frequency domain operation, double talk detection, packet loss detection, signal detection, and noise subtraction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.