Title:
ACTIVE NOISE REDUCTION DEVICE, MOBILE DEVICE, AND ABNORMALITY DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/106735
Kind Code:
A1
Abstract:
An active noise reduction device (10) is provided with: a reference signal input terminal (11) to which a reference signal which is outputted by a reference signal source (51) attached to a vehicle (50) and which has a correlation with noise (N0) in a space (55) in the vehicle (50) is inputted; a test signal source (18) that outputs a test signal to a speaker (52) which is attached to the vehicle (50) and which is used for emitting cancellation sound (N1) for reducing the noise (N0); and an abnormality determination unit (19) that, on the basis of the reference signal inputted to the reference signal input terminal (11) from the reference signal source (51) when the test signal is being outputted to the speaker (52), determines whether there is an abnormality of the reference signal source (51).
Inventors:
KOTEGAWA KAZUHISA
Application Number:
PCT/JP2020/043152
Publication Date:
June 03, 2021
Filing Date:
November 19, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R29/00; G10K11/178
Foreign References:
| JP2019082628A | 2019-05-30 | |||
| JP2009241672A | 2009-10-22 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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