Title:
ACTIVE VIBRATION/NOISE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/128856
Kind Code:
A1
Abstract:
Provided is an active vibration/noise control device in which a sound source signal that is set on the basis of a control frequency specified in accordance with a vibration noise source that emits a vibration noise is input to a control signal filter (2) and a control signal is output. A filter coefficient update unit (4) updates a coefficient of the control signal filter (2) on the basis of the sound source signal and an error signal. On the basis of the control frequency and the error signal, a signal-to-noise ratio measurement unit (5) outputs a signal-to-noise ratio that is determined by vibration noise and noise that is included in the error signal. An update control unit (6) adjusts the update step width of the filter coefficient update unit (4) on the basis of the signal-to-noise ratio.
Inventors:
YANO ATSUYOSHI (JP)
Application Number:
PCT/JP2013/054147
Publication Date:
August 28, 2014
Filing Date:
February 20, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
YANO ATSUYOSHI (JP)
YANO ATSUYOSHI (JP)
International Classes:
G10K11/178
Foreign References:
| JPH05307393A | 1993-11-19 | |||
| JPH07219563A | 1995-08-18 | |||
| JPH03178845A | 1991-08-02 | |||
| JPH0411536A | 1992-01-16 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Hideaki Tazawa (JP)
Hideaki Tazawa (JP)
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