Processing

Please wait...

Settings

Settings

Goto Application

1. JPWO2017170321 - 騒音低減装置

Office Japan
Application Number 2018509302
Application Date 27.03.2017
Publication Number WO2017170321
Publication Date 05.10.2017
Publication Kind A1
IPC
G10K 11/178
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
CPC
B64D 11/06
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
11Passenger or crew accommodation; Flight-deck installations not otherwise provided for
06Arrangements of seats, or adaptations or details specially adapted for aircraft seats
G10K 11/17854
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1785Methods, e.g. algorithms; Devices
17853of the filter
17854the filter being an adaptive filter
G10K 11/17857
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1785Methods, e.g. algorithms; Devices
17857Geometric disposition, e.g. placement of microphones
G10K 11/17881
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1787General system configurations
17879using both a reference signal and an error signal
17881the reference signal being an acoustic signal, e.g. recorded with a microphone
G10K 2210/1281
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
10Applications
128Vehicles
1281Aircraft, e.g. spacecraft, airplane or helicopter
B60R 13/0815
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
13Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
08Insulating elements, e.g. for sound insulation
0815Acoustic or thermal insulation of passenger compartments
Applicants パナソニックIPマネジメント株式会社
Inventors 荒木 潤二
窪田 憲一
Agents 新居 広守
寺谷 英作
道坂 伸一
Priority Data 2016065342 29.03.2016 JP
2016134780 07.07.2016 JP
Title
(JA) 騒音低減装置
Abstract
(JA)

騒音低減装置は、複数の騒音マイク、騒音制御部、制御スピーカを備えている。騒音制御部は、複数の騒音マイクで検知された騒音を、制御空間の制御中心で低減するための制御音信号を生成する。複数の騒音マイクにおける制御周波数fに対応する波長をλ、制御中心から制御スピーカまでの距離をd0、制御スピーカにおける制御遅延時間をt、音速をvとすると、関係式d=d0+t×v−λ/2で示される距離dよりも短い距離に配置される騒音マイク(420a)の個数は、距離dよりも長い距離に配置される騒音マイク(420b〜420g)の個数よりも少ない。制御中心からの距離が距離dよりも長い位置に配置される騒音マイク(420b〜420g)は、互いに隣接する騒音マイク同士の距離が略等距離になるように配置されている。