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1. (WO2019049276) NOISE ELIMINATION DEVICE AND NOISE ELIMINATION METHOD
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Pub. No.: WO/2019/049276 International Application No.: PCT/JP2017/032311
Publication Date: 14.03.2019 International Filing Date: 07.09.2017
IPC:
H04R 3/00 (2006.01) ,G10K 11/34 (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
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods 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
18
Methods or devices for transmitting, conducting or directing sound
26
Sound-focusing or directing, e.g. scanning
34
using electrical steering of transducer arrays, e.g. beam steering
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) This noise elimination device comprises: a target sound vector selection unit (103) that selects a target sound steering vector that indicates the direction from which a target sound arrives, from among steering vectors acquired in advance that indicate the directions from which sound arrives to a microphone array (200) provided with two or more acoustic sensors; an interference sound vector selection unit (104) that selects an interference sound steering vector that indicates the direction from which interference sound other than the target sound arrives, from among the steering vectors acquired in advance; and a signal processing unit (105) that, on the basis of two or more observation signals acquired from the microphone array (200), the target sound steering vector, and the interference sound steering vector, acquires a signal in which the interference sound was removed from the observation signals.
(FR) Dispositif d'élimination de bruit comprenant : une unité de sélection de vecteur sonore cible (103) qui sélectionne un vecteur de direction sonore cible qui indique la direction à partir de laquelle arrive un son cible, parmi les vecteurs de direction acquis à l'avance qui indiquent les directions à partir desquelles le son arrive à un réseau de microphones (200) pourvu de deux capteurs acoustiques ou plus ; une unité de sélection de vecteur de son d'interférence (104) qui sélectionne un vecteur de direction de son d'interférence qui indique la direction à partir de laquelle un son d'interférence autre que le son cible arrive, parmi les vecteurs de direction acquis à l'avance ; et une unité de traitement de signal (105) qui, sur la base de deux signaux d'observation ou plus acquis à partir du réseau de microphones (200), du vecteur de direction sonore cible et du vecteur de direction de son d'interférence, acquiert un signal dans lequel le son d'interférence a été éliminé des signaux d'observation.
(JA) 予め取得された、2個以上の音響センサを備えたマイクロホンアレイ(200)に対する音の到来方向を示すステアリングベクトルから、目的音の到来方向を示す目的音ステアリングベクトルを選択する目的音ベクトル選択部(103)と、予め取得されたステアリングベクトルから、目的音以外の妨害音の到来方向を示す妨害音ステアリングベクトルを選択する妨害音ベクトル選択部(104)と、マイクロホンアレイ(200)から得られる2以上の観測信号と、目的音ステアリングベクトルと、妨害音ステアリングベクトルとに基づいて、観測信号から妨害音を除去した信号を取得する信号処理部(105)とを備える。
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)