Invention Grant
- Patent Title: Active vibration noise control device
- Patent Title (中): 主动振动噪声控制装置
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Application No.: US13578727Application Date: 2010-02-15
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Publication No.: US09123325B2Publication Date: 2015-09-01
- Inventor: Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
- Applicant: Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
- Applicant Address: JP Kanagawa
- Assignee: PIONEER CORPORATION
- Current Assignee: PIONEER CORPORATION
- Current Assignee Address: JP Kanagawa
- Agency: Young & Thompson
- International Application: PCT/JP2010/052141 WO 20100215
- International Announcement: WO2011/099152 WO 20110818
- Main IPC: G10K11/178
- IPC: G10K11/178 ; H04R3/02

Abstract:
An active vibration noise control device cancels vibration noise by making plural speakers generate control sounds. The active vibration noise control device selects one or more speakers which output the control sounds, from plural speakers, based on a relationship between (1) a first phase difference which corresponds to a difference between phase characteristics of the vibration noise from a vibration noise source to an evaluation point and phase characteristics of the vibration noise from the vibration noise source to a pseudo evaluation point and (2) a second phase difference for each of the plural speakers corresponding to a difference between phase characteristics of the control sound from the speaker to the evaluation point and phase characteristics of the control sound from the speaker to the pseudo evaluation point. Therefore, it stably decreases the vibration noise at the pseudo evaluation point independently of a frequency band of the vibration noise.
Public/Granted literature
- US20120300955A1 ACTIVE VIBRATION NOISE CONTROL DEVICE Public/Granted day:2012-11-29
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