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1. WO1991001075 - ELECTRODYNAMIC SOUND GENERATOR FOR A HEARING AID

Publication Number WO/1991/001075
Publication Date 24.01.1991
International Application No. PCT/NO1990/000111
International Filing Date 05.07.1990
Chapter 2 Demand Filed 01.02.1991
IPC
H04R 1/22 2006.01
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 7/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers; Cones
02characterised by the construction
H04R 9/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9Transducers of moving-coil, moving-strip, or moving-wire type
02Details
H04R 9/10 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9Transducers of moving-coil, moving-strip, or moving-wire type
10Telephone receivers
H04R 25/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
25Deaf-aid sets
02adapted to be supported entirely by ear
CPC
H04R 1/225
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
225for telephonic receivers
H04R 2460/11
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
2460Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
11Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
H04R 25/48
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
25Deaf-aid sets ; , i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
48using constructional means for obtaining a desired frequency response
H04R 25/604
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
25Deaf-aid sets ; , i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
60Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
604of acoustic or vibrational transducers
H04R 7/127
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers
02characterised by the construction
12Non-planar diaphragms or cones
127dome-shaped
H04R 7/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers
26Damping by means acting directly on free portion of diaphragm or cone
Applicants
  • NHA A/S [NO/NO]; Ringsvn. 3 N-1320 Stabekk, NO (AllExceptUS)
  • SVEAN, Jarle [NO/NO]; NO (UsOnly)
  • KROKSTAD, Asbjørn [NO/NO]; NO (UsOnly)
  • SOGN, Bjørn [NO/NO]; NO (UsOnly)
Inventors
  • SVEAN, Jarle; NO
  • KROKSTAD, Asbjørn; NO
  • SOGN, Bjørn; NO
Agents
  • ONSAGERS PATENTKONTOR AS; Tollbugt. 24 N-0157 Oslo 1, NO
Priority Data
89281106.07.1989NO
Publication Language English (EN)
Filing Language Norvegian (NO)
Designated States
Title
(EN) ELECTRODYNAMIC SOUND GENERATOR FOR A HEARING AID
(FR) GENERATEUR DE SON DYNAMIQUE DESTINE A UN APPAREIL DE CORRECTION AUDITIVE
Abstract
(EN)
A miniaturized electrodynamic sound generator comprises a diaphragm, a permanent magnet with pole pieces, a magnet yoke and a coil. The yoke is designed such it constitutes a housing or a cabinet of the sound generator. The permanent magnet and the pole pieces are provided in a recess in the cabinet or the yoke and surrounded by the coil which is connected to the diaphragm at a peripheral area thereof. The diaphragm is provided above the magnet system of the recess and fastened to the outside of the cabinet. The dynamic response of the sound generator is determined by the magnetic, electrical, mechanical and acoustic parameters which are used in the design of the sound generator. By varying some of these parameters, the frequency and amplitude of a resonance may be chosen such that the sound generator may reconstruct the natural acoustic transfer function in the range 2-4 kHz in the human meatus. This makes the sound generator particularly suitable for use in hearing aids.
(FR)
Un générateur miniaturisé de son dynamique comporte une membrane, un aimant permanent possédant des pièces polaires, une culasse d'aimant et une bobine. La culasse est configurée de sorte qu'elle constitue un logement ou un boîtier du générateur de son. L'aimant permanent et les pièces polaires sont disposés dans un creux situé dans le boîtier ou la culasse et sont entourés par la bobine qui est reliée à la membrane à une zone périphérique de celle-ci. La membrane est disposée au-dessus du système à aimant du creux et est fixée à l'extérieur du boîtier. La réponse dynamique du générateur de son est déterminée par les paramètres magnétiques, électriques, mécaniques et acoustiques qui sont utilisés lors de la configuration du générateur de son. En variant certains de ces paramètres, la fréquence et l'amplitude d'une résonance peuvent être choisies de sorte que le générateur de son puisse reconstituer la fonction de transfert auditif naturelle dans le domaine de 2-4 kHz dans le méat humain. Ceci rend le générateur de son particulièrement adapté à l'utilisation dans les appareils de correction auditive.
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