Title:
SIGNAL PROCESSING DEVICE, PROGRAM, AND RANGE HOOD DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/021114
Kind Code:
A1
Abstract:
Provided are a signal processing device, program, and range hood device with which it is possible to accurately muffle noise fluctuating due to changes in environmental conditions. In this signal processing device (12), a coefficient updating unit (135) calculates a filter coefficient W on the basis of a reference signal R(ω), an error signal E(ω), and an update parameter µ, and sets the coefficient in a muffling filter (136a). A parameter adjustment unit (137) adjusts the update parameter µ according to fluctuation in the reference signal R(ω) produced from the output of a reference microphone (111).
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Inventors:
HANAZONO MASAYA
YAMADA WAKIO
YAMADA WAKIO
Application Number:
PCT/JP2015/003476
Publication Date:
February 11, 2016
Filing Date:
July 09, 2015
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G10K11/178; F24F7/06; F24F13/02
Domestic Patent References:
| WO2012153451A1 | 2012-11-15 |
Foreign References:
| JPH09195791A | 1997-07-29 | |||
| JP2012123135A | 2012-06-28 | |||
| JP2007093962A | 2007-04-12 | |||
| JP2014077906A | 2014-05-01 |
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
Yoshikiyo Nishikawa (JP)
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