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1. (WO2019049438) ACOUSTIC DEVICE
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Pub. No.: WO/2019/049438 International Application No.: PCT/JP2018/020003
Publication Date: 14.03.2019 International Filing Date: 24.05.2018
IPC:
H04R 1/26 (2006.01) ,H04R 1/02 (2006.01) ,H04R 1/28 (2006.01) ,H04R 1/32 (2006.01) ,H04R 3/00 (2006.01) ,H04R 3/14 (2006.01) ,H04R 7/04 (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
1
Details of transducers
20
Arrangements for obtaining desired frequency or directional characteristics
22
for obtaining desired frequency characteristic only
26
Spatial arrangement of separate transducers responsive to two or more frequency ranges
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
02
Casings; Cabinets; Mountings therein
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
22
for obtaining desired frequency characteristic only
28
Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
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
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
3
Circuits for transducers
12
for distributing signals to two or more loudspeakers
14
Cross-over networks
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7
Diaphragms for electromechanical transducers; Cones
02
characterised by the construction
04
Plane diaphragms
Applicants:
ヤマハ株式会社 YAMAHA CORPORATION [JP/JP]; 静岡県浜松市中区中沢町10番1号 10-1, Nakazawa-cho, Naka-ku, Hamamatsu-shi, Shizuoka 4308650, JP
Inventors:
野崎 昭彦 NOZAKI, Akihiko; JP
佐野 常典 SANO, Tsunenori; JP
野呂 正夫 NORO, Masao; JP
Agent:
立花 顕治 TACHIBANA, Kenji; JP
山下 未知子 YAMASHITA, Michiko; JP
桝田 剛 MASUDA, Tsuyoshi; JP
Priority Data:
2017-17223407.09.2017JP
Title (EN) ACOUSTIC DEVICE
(FR) DISPOSITIF ACOUSTIQUE
(JA) 音響装置
Abstract:
(EN) Provided is an acoustic device capable of allowing people located in both the front side and rear side to hear reproduced sounds over a wide frequency range. This acoustic device is provided with a flat speaker 3 for low frequency-range reproduction designed to emit sound from both the front side and the rear side of the acoustic device. The acoustic device is also provided with a first speaker 5F for middle/high frequency-range reproduction designed to emit sound in a direction in which the front face of the flat speaker 3 is oriented, and a second speaker 5R for middle/high frequency-range reproduction designed to emit sound in a direction in which the rear face of the flat speaker 3 is oriented. Preferably, the first speaker 5F is driven using a sound signal corresponding to the middle/high frequency range and a sound signal obtained by inverting the phase of this sound signal is used to drive the second speaker 5R.
(FR) L'invention concerne un dispositif acoustique susceptible de permettre à des personnes situées à la fois sur le côté avant et le côté arrière d'entendre des sons reproduits sur une large plage de fréquences. Ce dispositif acoustique est pourvu d'un haut-parleur plat (3) pour une reproduction à faible portée de fréquence conçue pour émettre un son depuis le côté avant et le côté arrière du dispositif acoustique. Le dispositif acoustique est également pourvu d'un premier haut-parleur (5F) pour la reproduction de bande de fréquence haute/moyenne conçue afin d'émettre un son dans une direction dans laquelle la face avant du haut-parleur plat (3) est orientée, et un second haut-parleur (5R) pour une reproduction de bande de fréquence haute/moyenne conçue afin d'émettre un son dans une direction dans laquelle la face arrière du haut-parleur plat (3) est orientée. De préférence, le premier haut-parleur (5F) est attaqué à l'aide d'un signal sonore correspondant à la plage de fréquence haute/moyenne et un signal sonore obtenu par inversion de la phase de ce signal sonore est utilisé afin d'attaquer le second haut-parleur (5R).
(JA) 前方および後方の両方に広い周波数帯域に亙って再生音を聴かせることができる音響装置を提供する。この音響装置では、前面および背面から各々放音する低域再生用の平面スピーカ3を設ける。また、平面スピーカ3の前面が向かう方向へ放音する中高域再生用の第1のスピーカ5Fと、平面スピーカ3の背面が向かう方向へ放音する中高域再生用の第2のスピーカ5Rとを設ける。中高域の音信号により第1のスピーカ5Fを駆動し、この音信号を位相反転した音信号により第2のスピーカ5Rを駆動することが好ましい。
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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, 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)