发明名称 ACOUSTIC ECHO CANCELLING SYSTEM AND METHOD
摘要 An audio system includes a loudspeaker, a first microphone, an echo canceller, and a second microphone within the loudspeaker enclosure coupled to the loudspeaker. The first microphone provides an environmental acoustic signal to the echo canceller. The second microphone can be a high acoustic overload microphone and be placed in a back cavity of the speaker enclosure. A speaker signal is used to drive the loudspeaker, which may produce non-linear distortions in the acoustic output. The second microphone senses a signal that includes both the linear and non-linear distortions. This sensed signal is used to remove both the linear and the non-linear distortions from the environmental acoustic signal picked up from the first microphone and processed by the echo canceller.
申请公布号 WO2016186997(A1) 申请公布日期 2016.11.24
申请号 WO2016US32318 申请日期 2016.05.13
申请人 HARMAN INTERNATIONAL INDUSTRIES, INC. 发明人 MICHEL, Alan Dean;LI, Shengbo;ADAIR, Brian;SHANK, Kevin
分类号 H04R3/00;H04M9/08;H04R3/02 主分类号 H04R3/00
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