Patent · US Active

Echo suppression comprising modeling of late reverberation components

US9699552B2 · kind B2 · utility

3Cited by

3References

21Claims

0Family size

Assignee

Faunhofer-Gesellschaft zur Foerderung der angewandten · DE

Inventors

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

Key dates

Filing date	Apr 22, 2013
Grant date	Jul 4, 2017
Priority date	—
Expiry date	Jul 1, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG10L2021/02082
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An apparatus for computing filter coefficients for an adaptive filter is disclosed. The adaptive filter is used for filtering a microphone signal so as to suppress an echo due to a loudspeaker signal. The apparatus has: an echo decay modeling means for modeling a decay behavior of an acoustic environment and for providing a corresponding echo decay parameter; and computing means for computing the filter coefficients of the adaptive filter on the basis of the echo decay parameter. A corresponding method has: providing echo decay parameters determined by means of an echo decay modeling means; and computing the filter coefficients of the adaptive filter on the basis of the echo decay parameters.

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