Patent · US Active

Apparatus and method for computing filter coefficients for echo suppression

US8462958B2 · kind B2 · utility

7Cited by

8References

24Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Fabian Kuech · Erlangen, DE
Markus Kallinger · Erlangen, DE
Christof Faller · New Providence, US
Alexis Favrot · Suhr, CH

Key dates

Filing date	Jan 16, 2009
Grant date	Jun 11, 2013
Priority date	—
Expiry date	Oct 28, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04B3/237
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A preferred embodiment of an apparatus for computing filter coefficients for an adaptive filter for filtering a microphone signal so as to suppress an echo due to a loudspeaker signal includes an extractor for extracting a stationary component signal or a non-stationary component signal from the loudspeaker signal or from a signal derived from the loudspeaker signal, and a computer for computing the filter coefficients for the adaptive filter on the basis of the extracted stationary component signal or the extracted non-stationary component signal.

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