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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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