Title:
SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, PROGRAM, AND RANGEHOOD APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/178309
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a signal processing device, a signal processing method, a program, and a rangehood apparatus which are capable of suppressing vibration due to change in environmental conditions such as temperature, humidity, and pressure of an installation space, and disturbances such as intrusion of noise disturbances, thereby suppressing deterioration in sound deadening performance. In the signal processing device, the signal processing method, the program, and the rangehood apparatus according to the present invention, a sound deadening filter (135), to which a filter coefficient (W) is set, outputs a cancelling signal (Y(n)). A coefficient calculating unit (134a) calculates a first filter coefficient (W1(n)). A vibration suppressing unit (134b) calculates a second filter coefficient (W2(n)) by applying a window function (H(n)) to the first filter coefficient (W1(n)), and sets the second filter coefficient (W2(n)) as the filter coefficient (W).
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| JPH07334168 | ACTIVE NOISE CONTROL SYSTEM |
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| JPS59133595 | ACTIVE SOUND ATTENUATOR |
Inventors:
HANAZONO MASAYA
YAMADA WAKIO
YAMADA WAKIO
Application Number:
PCT/JP2016/002166
Publication Date:
November 10, 2016
Filing Date:
April 25, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G10K11/178; F24F7/06; G10K11/16
Foreign References:
| JPH10171466A | 1998-06-26 | |||
| JPH08129388A | 1996-05-21 | |||
| JP2014077906A | 2014-05-01 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
Kenji Kamata (JP)
Kenji Kamata (JP)
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