Invention Grant
- Patent Title: Multi-channel echo compensation system
- Patent Title (中): 多通道回波补偿系统
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Application No.: US11787348Application Date: 2007-04-16
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Publication No.: US08130969B2Publication Date: 2012-03-06
- Inventor: Markus Buck , Tim Haulick , Martin Roessler , Gerhard Uwe Schmidt
- Applicant: Markus Buck , Tim Haulick , Martin Roessler , Gerhard Uwe Schmidt
- Applicant Address: US MA Burlington
- Assignee: Nuance Communications, Inc.
- Current Assignee: Nuance Communications, Inc.
- Current Assignee Address: US MA Burlington
- Agency: Sunstein Kann Murphy & Timbers LLP
- Priority: EP06008006 20060418
- Main IPC: H04B3/20
- IPC: H04B3/20 ; H04B15/00

Abstract:
An echo compensation system may remove undesirable audio signals. The echo compensation system may utilize adaptive filters to remove echoes and undesirable signals received by a microphone. The echo compensation system may inhibit adaptation of an adaptive filter when left and right channel audio signals are highly correlated. In a two-channel system, inhibiting adaptation of one of two adaptive filters may reduce computational power requirements, while still removing undesirable signals. In a four-channel system, inhibiting adaptation of all but one of the four adaptive filters may reduce computational power requirements by a greater percentage.
Public/Granted literature
- US20080031466A1 Multi-channel echo compensation system Public/Granted day:2008-02-07
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