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1. (WO1992010917) ACOUSTIC DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010917 International Application No.: PCT/FR1991/000966
Publication Date: 25.06.1992 International Filing Date: 04.12.1991
Chapter 2 Demand Filed: 30.06.1992
IPC:
H04R 1/32 (2006.01) ,H04R 1/34 (2006.01) ,H04R 27/00 (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
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
1
Details of transducers
20
Arrangements for obtaining desired frequency or directional characteristics
32
for obtaining desired directional characteristic only
34
by using a single transducer with sound reflecting, diffracting, directing or guiding means
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
27
Public address systems
Applicants:
PRESCOM [FR/FR]; Actipole - Bâtiment 1 12, rue du Fort-de-Saint-Cyr F-78182 Saint-Quentin-en-Yvelynes Cédex, FR (AllExceptUS)
DUBOURNAIS, Dominique [FR/FR]; FR (UsOnly)
ZURCHER, Frédéric [FR/FR]; FR (UsOnly)
Inventors:
DUBOURNAIS, Dominique; FR
ZURCHER, Frédéric; FR
Agent:
BOUJU DERAMBURE (BUGNION) S.A.; 38, av. de la Grande-Armée F-75017 Paris, FR
Priority Data:
90/1520805.12.1990FR
Title (EN) ACOUSTIC DEVICE
(FR) DISPOSITIF ACOUSTIQUE
Abstract:
(EN) The device comprises a microphone (2) and a speaker (3) arranged one on top of the other with the microphone pointing downwards at a horizontal supporting surface (10) and the speaker pointing upwards and mounted in a cavity (6) which has a vertical axis and forms an enclosed space defined by a housing (7) placed above the microphone, said microphone being nondirectional and coaxial with the cavity. The microphone (2) is set into a tubular sleeve (15) having a closed upper portion (16) and an open lower portion (17), and is centred on the axis of the housing, whereby a hollow recess is defined for receiving the microphone which is directed at a smooth, rigid reflector plate (26) arranged facing the open lower portion (17) of the sleeve (15).
(FR) Le dispositif comporte un microphone (2) et un haut-parleur (3) superposés, le microphone étant dirigé vers le bas en direction d'une surface de support horizontale (10) et le haut-parleur orienté vers le haut étant monté dans une cavité (6), à axe vertical, constituant une enceinte close, délimitée par un boîtier (7) disposé au-dessus du microphone, celui-ci, du type omnidirectionnel, étant disposé coaxialement à la cavité. Le microphone (2) est monté en retrait dans un fourreau tubulaire (15), fermé à sa partie supérieure (16) et ouvert à sa partie inférieure (17), centré sur l'axe du boîtier et délimitant un logement creux recevant le microphone qui est dirigé vers une plaque réflectrice (26), lisse et rigide, disposée en regard de la partie inférieure ouverte (17) du fourreau (15).
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MG, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
AU1991090890