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1. EP1161118 - SPEAKER SYSTEM

Office European Patent Office
Application Number 00905413
Application Date 29.02.2000
Publication Number 1161118
Publication Date 05.12.2001
Publication Kind B1
IPC
H04R 1/20
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
H04R 1/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
02Casings; Cabinets; Mountings therein
H04R 1/22
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
H04R 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 1/34
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
34by using a single transducer with sound reflecting, diffracting, directing or guiding means
CPC
H04R 1/227
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
227using transducers reproducing the same frequency band
H04R 1/2842
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
2807Enclosures comprising vibrating or resonating arrangements
2838of the bandpass type
2842for loudspeaker transducers
H04R 1/288
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
2869Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
2876by means of damping material, e.g. as cladding
288for loudspeaker transducers
H04R 1/30
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
30Combinations of transducers with horns, e.g. with mechanical matching means ; , i.e. front-loaded horns
H04R 1/345
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
34by using a single transducer with sound reflecting, diffracting, directing or guiding means
345for loudspeakers
Applicants ONKYO KK
Inventors SADAIE KOICHI
TOYOFUKU KENICHIRO
Designated States
Priority Data 0001176 29.02.2000 JP
10531199 13.04.1999 JP
32236599 12.11.1999 JP
5594299 03.03.1999 JP
Title
(DE) LAUTSPRECHERSYSTEM
(EN) SPEAKER SYSTEM
(FR) SYSTEME DE HAUT-PARLEUR
Abstract
(EN)
A small-sized speaker system having a very excellent bass-range reproduction capability includes a sound radiation component for guiding acoustic waves radiated from the speaker units to a free space by causing a larger degree of air compression and expansion than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units. The speaker system has 20% or more lower f0 than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units.

(FR)
La présente invention concerne un système de haut-parleur de dimensions réduites présentent de très bonnes capacités de restitution des graves comprenant une unité haut-parleur placé dans une enceinte fermée et une cavité guide-son à travers laquelle le son émis par le haut-parleur est guidé vers l'extérieur de manière à comprimer et détendre l'air d'une façon plus importante que celle obtenu lorsque le haut-parleur est placé dans une enceinte fermée de mêmes dimensions et qu'il émet le son directement à l'extérieur. Le f0 du système de haut-parleur est au moins de 20 % inférieur à celui d'un haut-parleur placé dans une enceinte fermée et rayonnant le son directement à l'extérieur.