Invention Grant
- Patent Title: Audio processing apparatus and control method thereof
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Application No.: US16058268Application Date: 2018-08-08
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Publication No.: US10418049B2Publication Date: 2019-09-17
- Inventor: Yusuke Toriumi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2017-157616 20170817; JP2017-157617 20170817
- Main IPC: H04R3/00
- IPC: H04R3/00 ; G10L21/0232 ; H04R1/40 ; H04R5/04 ; H04R5/027 ; G10L21/0208 ; G10L21/0216

Abstract:
The present invention makes it possible to reduce noise from a driving unit with a two-channel microphone configuration. An audio processing apparatus has a first microphone whose main acquisition target is sound from outside of the apparatus, a second microphone whose main acquisition target is driving noise from the driving unit, and a noise removing unit that generates two-channel audio data in which driving noise made by the driving unit of the apparatus has been reduced based on the difference between time-series audio data acquired by the first microphone and time-series audio data acquired by the second microphone. This noise removing unit has two adaptive filter units that respectively perform filter processing on time-series audio data from the first microphone and time-series audio data from the second microphone, and generates stereo two-channel audio data.
Public/Granted literature
- US20190057711A1 AUDIO PROCESSING APPARATUS AND CONTROL METHOD THEREOF Public/Granted day:2019-02-21
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