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1. (WO2019030898) NOISE ELIMINATION DEVICE AND NOISE ELIMINATION METHOD
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/030898 International Application No.: PCT/JP2017/029091
Publication Date: 14.02.2019 International Filing Date: 10.08.2017
IPC:
H04R 3/00 (2006.01) ,H04R 1/40 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3
Circuits for transducers
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1
Details of transducers
20
Arrangements for obtaining desired frequency or directional characteristics
32
for obtaining desired directional characteristic only
40
by combining a number of identical transducers
Applicants:
三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目7番3号 7-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008310, JP
Inventors:
田中 信秋 TANAKA, Nobuaki; JP
Agent:
田澤 英昭 TAZAWA, Hideaki; JP
濱田 初音 HAMADA, Hatsune; JP
中島 成 NAKASHIMA, Nari; JP
坂元 辰哉 SAKAMOTO, Tatsuya; JP
辻岡 将昭 TSUJIOKA, Masaaki; JP
井上 和真 INOUE, Kazuma; JP
Priority Data:
Title (EN) NOISE ELIMINATION DEVICE AND NOISE ELIMINATION METHOD
(FR) DISPOSITIF D'ÉLIMINATION DE BRUIT ET PROCÉDÉ D'ÉLIMINATION DE BRUIT
(JA) 雑音除去装置および雑音除去方法
Abstract:
(EN) The present invention is provided with a microphone array (3) having a plurality of microphones (2) for observing a sound signal and a noise elimination processing unit (5) that acquires sound of interest by eliminating noise from the sound signal observed by the plurality of microphones (2). Two mutually adjacent microphones (2) from among the plurality of microphones (2) have a positional relationship such that, in a plane (12) including said two microphones (2), a sound-of-interest source (A) that generates the sound of interest, and a noise source (B) that generates the noise, a perpendicular bisector (13) of a first line segment (10) connecting the two microphones (2) coincides with the bisector of the angle θ between a second line segment (14) connecting the sound-of-interest source (A) to a midpoint (11) of the first line segment (10) and a third line segment (15) connecting the noise source (B) to the midpoint (11) of the first line segment (10).
(FR) La présente invention comprend un réseau de microphones (3) ayant une pluralité de microphones (2) pour observer un signal sonore et une unité de traitement d'élimination de bruit (5) qui acquiert un son d'intérêt par élimination du bruit du signal sonore observé par la pluralité de microphones (2). Deux microphones mutuellement adjacents (2) parmi la pluralité de microphones (2) ont une relation de position telle que, dans un plan (12) comprenant lesdits deux microphones (2), une source sonore d'intérêt (A) qui génère le son d'intérêt, et une source de bruit (B) qui génère le bruit, une médiatrice (13) d'un premier segment de ligne (10) reliant les deux microphones (2) coïncide avec la bissectrice de l'angle θ entre un deuxième segment de ligne (14) reliant la source sonore d'intérêt (A) à un point médian (11) du premier segment de ligne (10) et un troisième segment de ligne (15) reliant la source de bruit (B) au point médian (11) du premier segment de ligne (10).
(JA) 音信号を観測する複数のマイクロホン(2)を有するマイクロホンレイ(3)と、複数のマイクロホン(2)が観測した音信号から、雑音を除去して目的音を取得する雑音除去処理部(5)とを備え、複数のマイクロホン(2)のうち、互いに隣接する2個のマイクロホン(2)は、当該2個のマイクロホン(2)と、目的音を発生する目的音源(A)と、雑音を発生する雑音源(B)とを含む平面(12)において、2個のマイクロホン(2)を結ぶ第1の線分(10)の垂直二等分線(13)が、目的音源(A)と第1の線分(10)の中点(11)とを結ぶ第2の線分(14)と、雑音源(B)と第1の線分(10)の中点(11)とを結ぶ第3の線分(15)とのなす角θの二等分線に、一致する配置関係を有する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)