Patent · US Active

Method for determining a set of filter coefficients for an acoustic echo compensator

US8787560B2 · kind B2 · utility

18Cited by

9References

21Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Markus Buck · Biberach, DE
Gerhard Uwe Schmidt · Ulm, DE
Tobias Wolff · Neu-Ulm, DE

Key dates

Filing date	Feb 18, 2010
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Jul 4, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2430/20
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention provides a method for determining a set of filter coefficients for an acoustic echo compensator in a beamformer arrangement. The acoustic echo compensator compensates for echoes within the beamformed signal. A plurality of sets of filter coefficients for the acoustic echo compensator is provided. Each set of filter coefficients corresponds to one of a predetermined number of steering directions of the beamformer arrangement. The predetermined number of steering directions is equal to or greater than the number of microphones in the microphone array. For a current steering direction, a current set of filter coefficients for the acoustic echo compensator is determined based on the provided sets of filter coefficients.

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