发明授权
- 专利标题: Adaptive active noise canceling for handset
- 专利标题(中): 手机自适应主动噪声消除
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申请号: US13154997申请日: 2011-06-07
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公开(公告)号: US08909524B2公开(公告)日: 2014-12-09
- 发明人: Thomas Stoltz , Kim Spetzler Berthelsen , Robert Adams
- 申请人: Thomas Stoltz , Kim Spetzler Berthelsen , Robert Adams
- 申请人地址: US MA Norwood
- 专利权人: Analog Devices, Inc.
- 当前专利权人: Analog Devices, Inc.
- 当前专利权人地址: US MA Norwood
- 代理机构: Kenyon & Kenyon LLP
- 主分类号: G10L15/20
- IPC分类号: G10L15/20
摘要:
Embodiments of the present invention provide an adaptive noise canceling system. The adaptive noise canceling system may be used in a handset to cancel background noise by generating an anti-noise signal. The adaptive noise canceling system may include first input to receive a first signal from a feedforward microphone; a second input to receive a second signal from an error microphone; a controller coupled to the inputs, the controller configured to adaptively generate an anti-noise signal according to the received signals, wherein the controller derives a profile of the anti-noise signal from the first signal and derives a magnitude of the anti-noise signal from both first and second signal; and an output to transmit the anti-noise signal to a speaker.
公开/授权文献
- US20120316872A1 ADAPTIVE ACTIVE NOISE CANCELING FOR HANDSET 公开/授权日:2012-12-13
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