Title:
NOISE CONTROL DEVICE, PROGRAM, AND NOISE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/090120
Kind Code:
A1
Abstract:
This noise control device comprises: a noise detector; a first control filter that outputs a first control signal; a second control filter that outputs a second control signal; an adder that adds the first control signal and the second control signal and outputs a third control signal; a speaker that reproduces a control sound on the basis of the third control signal; an error microphone; a transmission characteristic corrector; a first coefficient updater that updates the coefficient of the first control filter such that an error signal is minimized; a first band-limiting filter that band-limits a noise signal; a second band-limiting filter that band-limits the third control signal; and a second coefficient updater that updates the coefficient of the second control filter on the basis of an output signal of the first band-limiting filter and an output signal of the second band-limiting filter.
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Inventors:
KANO HIROYUKI (JP)
Application Number:
PCT/JP2022/040288
Publication Date:
May 25, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
PANASONIC IP CORP AMERICA (US)
International Classes:
G10K11/178
Foreign References:
| JP2000089770A | 2000-03-31 | |||
| JPH04190396A | 1992-07-08 | |||
| JPH0573074A | 1993-03-26 | |||
| US9129586B2 | 2015-09-08 |
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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