Invention Grant
US08867735B2 Echo cancelling device, communication device, and echo cancelling method having the error signal generating circuit
有权
回波消除装置，通信装置和具有误差信号发生电路的回波消除方法
- Patent Title: Echo cancelling device, communication device, and echo cancelling method having the error signal generating circuit
- Patent Title (中): 回波消除装置，通信装置和具有误差信号发生电路的回波消除方法
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Application No.: US13619836Application Date: 2012-09-14
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Publication No.: US08867735B2Publication Date: 2014-10-21
- Inventor: Hiroyuki Kobayashi
- Applicant: Hiroyuki Kobayashi
- Applicant Address: JP Kawasaki-Shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-Shi, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2008-243702 20080924
- Main IPC: H04M9/08
- IPC: H04M9/08
Abstract:
An echo cancelling device includes an adaptive filter which synthesizes a spurious echo signal from a receiving signal, a first subtractor which generates an echo cancellation signal based on an input signal including a voice signal of a speaker and the spurious echo signal, and an error signal generating circuit which generates an error signal based on the input signal and the echo cancellation signal.
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