Invention Grant
- Patent Title: Acoustic echo suppression unit and conferencing front-end
- Patent Title (中): 声回声抑制单元和会议前端
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Application No.: US13272243Application Date: 2011-10-13
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Publication No.: US08873764B2Publication Date: 2014-10-28
- Inventor: Fabian Kuech , Markus Kallinger , Markus Schmidt , Meray Zourub , Marco Diatschuk , Oliver Moser
- Applicant: Fabian Kuech , Markus Kallinger , Markus Schmidt , Meray Zourub , Marco Diatschuk , Oliver Moser
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee Address: DE Munich
- Agency: Keating & Bennett, LLP
- Main IPC: H04B3/20
- IPC: H04B3/20 ; H04M9/08
Abstract:
An acoustic echo suppression unit according to an embodiment of the present invention includes and input interface for extracting a downmix signal from an input signal, the input signal including the downmix signal and parametric side information, wherein the downmix and the parametric side information together represent a multichannel signal, a calculator for calculating filter coefficients for an adaptive filter, wherein the calculator is adapted to determine the filter coefficients based on the downmix signal and a microphone signal or a signal derived from the microphone signal, and an adaptive filter adapted to filter the microphone signal or the signal derived from the microphone signal based on the filter coefficients to suppress an echo caused by the multichannel signal in the microphone signal.
Public/Granted literature
- US20120076308A1 ACOUSTIC ECHO SUPPRESSION UNIT AND CONFERENCING FRONT-END Public/Granted day:2012-03-29
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