- 专利标题： Noise reduction apparatus, noise reduction method, and computer-readable recording medium
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申请号： US16573707申请日： 2019-09-17
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公开(公告)号： US11049486B2公开(公告)日： 2021-06-29
- 发明人: Masamitsu Fujimaru
- 申请人： Olympus Corporation
- 申请人地址： JP Hachioji
- 专利权人： Olympus Corporation
- 当前专利权人： Olympus Corporation
- 当前专利权人地址： JP Hachioji
- 代理机构： Pokotylo Patent Services
- 代理商 John C. Pokotylo
- 优先权： JPJP2017-085659 20170424
- 主分类号： G10K11/178
- IPC分类号： G10K11/178 ; H04R1/10 ; H04R25/00
摘要：
A noise reduction apparatus includes: an input device to which an electric signal is input from an external device; a signal processing circuit configured to perform predetermined signal processing on the electric signal input to the input device and output a generated signal to an external device; a switch configured to change over to either one of a connected state in which the input device and the signal processing circuit are electrically connected to each other and a disconnected state in which the input device and the signal processing circuit are electrically disconnected to each other; and a noise processing circuit configured to subtract a noise signal output from the signal processing circuit when the switch is in the disconnected state from the signal output from the signal processing circuit when the switch is in the connected state, and output a subtraction result.
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