EP4106348A1 - Dispositif auditif - Google Patents

Dispositif auditif Download PDF

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Publication number
EP4106348A1
EP4106348A1 EP22171850.5A EP22171850A EP4106348A1 EP 4106348 A1 EP4106348 A1 EP 4106348A1 EP 22171850 A EP22171850 A EP 22171850A EP 4106348 A1 EP4106348 A1 EP 4106348A1
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
housing
hearing device
box
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22171850.5A
Other languages
German (de)
English (en)
Inventor
Hoong Yih Chan
Agustiar Agustiar
Soon Hon Lim
Shinq Yee Chia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sivantos Pte Ltd
Original Assignee
Sivantos Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sivantos Pte Ltd filed Critical Sivantos Pte Ltd
Publication of EP4106348A1 publication Critical patent/EP4106348A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/021—Behind the ear [BTE] hearing aids
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/49—Reducing the effects of electromagnetic noise on the functioning of hearing aids, by, e.g. shielding, signal processing adaptation, selective (de)activation of electronic parts in hearing aid
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/01—Transducers used as a loudspeaker to generate sound aswell as a microphone to detect sound

Definitions

  • the invention relates to a hearing device, for example in the form of a hearing aid device.
  • Hearing devices are usually used to output an audio signal to the hearing of the wearer of this hearing device.
  • the output takes place by means of an output converter, usually acoustically via airborne sound using a loudspeaker (also referred to as “listener” or “receiver”).
  • Hearing devices of this type are often used as so-called hearing aid devices (also: hearing aids for short).
  • the hearing devices normally comprise an acoustic input converter (in particular a microphone) and a signal processor which is set up to process the input signal (also: microphone signal) generated by the input converter from the ambient sound using at least one signal processing algorithm which is usually stored in a user-specific manner in such a way that a Hearing loss of the wearer of the hearing device is at least partially compensated.
  • the output converter can also be, in addition to a loudspeaker, alternatively a so-called bone conduction receiver or a cochlear implant, which are set up for mechanically or electrically coupling the audio signal into the wearer's hearing.
  • hearing devices also includes devices such as so-called tinnitus maskers, headsets, headphones and the like.
  • Typical designs of hearing devices are behind-the-ear (“BTE” or “BTE”) and in-the-ear (“ITE” or “ITE”) hearing devices. These designations are aimed at the intended wearing position.
  • Behind-the-ear hearing devices have a (main) housing that worn behind the ear cup.
  • the sound output to the ear usually takes place by means of a sound tube, the end of which is positioned in the auditory canal, and in models that have an external loudspeaker that is placed in the auditory canal.
  • In-the-ear hearing devices on the other hand, have a housing that is worn in the auricle or even completely in the auditory canal.
  • loudspeakers are used, which can generate a comparatively high sound pressure level (for example of at least approximately 90 dB SPL).
  • the loudspeakers are arranged in an additional housing (“loudspeaker box”) within the housing of the hearing device so that the sound generated does not react on other components, in particular on the microphone or microphones in question.
  • the loudspeaker is usually suspended by means of an elastomer coating and/or supported only at certain points in order to prevent structure-borne noise from being transmitted to the other components.
  • the loudspeaker with its sound output socket is connected - usually even independently of the loudspeaker box - by means of an internal sound conduction element, usually a flexible tube, to a sound output opening of the hearing device, in the case of a BTE usually to a sound tube leading from the BTE housing to the ear.
  • an internal sound conduction element usually a flexible tube
  • structure-borne noise causes feedback ("feedback") in the range of around 1 to 2 kHz and airborne noise feedback (also known as open loop gain feedback) in the range of around 3-5 kHz.
  • the invention is based on the object of specifying an improved hearing device.
  • the hearing device has a loudspeaker which includes a loudspeaker membrane for generating acoustic signals, a drive acting on the loudspeaker membrane and a loudspeaker housing in which the drive and the loudspeaker membrane are accommodated.
  • the hearing device also has a housing, which encloses a housing interior, and a loudspeaker box which is arranged in the housing interior and in which the loudspeaker is sealed in a fluid-tight manner with respect to the housing interior.
  • the loudspeaker box has a sound outlet opening coupled to a sound conductor leading out of the housing.
  • the loudspeaker is arranged in the loudspeaker box free of a sound channel element (or: sound conduction element) which is arranged inside the loudspeaker box and couples the loudspeaker to the sound outlet opening.
  • the loudspeaker is used in the loudspeaker box without such a usually flexible sound-conducting element, also referred to as a sound tube.
  • the drive of the loudspeaker is understood to mean any form of movement generation and transmission to the loudspeaker membrane, as is known in particular in the field of hearing devices.
  • this is the Drive around an electromagnetically moved "armature”, which forms a so-called “balanced armature”, or around a so-called “dynamic driver”.
  • MEMS technology can also be used.
  • the hearing device is preferably a BTE hearing aid device, referred to as “BTE” for short.
  • the loudspeaker housing is also designed in such a way that the loudspeaker has an open front volume.
  • the front volume of the loudspeaker is expediently designed to be open in that the loudspeaker membrane is kept free of a housing wall of the loudspeaker housing over a large part of its surface on the sound emission side.
  • at least 50 percent of the loudspeaker membrane, preferably the entire surface is kept free of the housing wall.
  • the wall part that would cover the loudspeaker membrane is missing.
  • the corresponding side wall is therefore missing.
  • a configuration of the loudspeaker with an open front volume improves the sensitivity in the high frequency range, in particular in the range of frequencies relevant to speech.
  • the loudspeaker is firmly connected to a bottom wall of the loudspeaker box by means of a damping element, which forms a damping mat, in particular only via a side surface of the loudspeaker.
  • the loudspeaker is therefore not arranged in a cover and by means of this is suspended in the loudspeaker box (hereinafter referred to as "box") or supported by means of selective support elements. Due to the fixed connection, especially in combination with the open front volume, due to which a so-called "spout” or sound outlet socket on the loudspeaker housing can be omitted (and in particular is not available), the loudspeaker can advantageously also be positioned and aligned comparatively freely in the box.
  • the loudspeaker can be aligned in such a way that it reacts comparatively insensitively to impacts.
  • Loudspeakers are fastened to the damping mat with their "rear side" facing away from the loudspeaker membrane and by means of them to the bottom wall of the box.
  • the damping mat has a support layer made of an elastomer.
  • This supporting layer in turn forms at least one damping chamber filled with a fluid, in particular with a gas, between the loudspeaker and the loudspeaker box.
  • the support layer preferably has a number of columnar support elements. These support elements are designed as cylindrical or hourglass-like columns ("pillars"), cones, pyramids or the like and support the damping chamber against the loudspeaker, the loudspeaker box or a cover layer of the damping mat.
  • the supporting layer preferably forms a type of trough which is open towards an upper side and in which the supporting elements are distributed. During the production of the damping mat, this trough is preferably covered (i.e. closed) and filled with the fluid by means of a cover layer optionally made of a different material, in particular a harder material, e.g. an elastomer with a higher Shore hardness than the support layer.
  • the support elements advantageously enable a uniform load distribution over the entire surface of the damping mat.
  • the box is made of a soft magnetic alloy with high magnetic permeability, known for example under the trade name "Mumetall".
  • Mometall a soft magnetic alloy with high magnetic permeability
  • the box is comparatively stiff and can also contribute to shielding other electrical and/or electronic components of the hearing device from the loudspeaker.
  • the box is preferably formed from two partial shells.
  • the loudspeaker is attached to the bottom wall facing the housing of the hearing device, in particular to the "lower" partial shell. This is preferably flat on the Connected housing of the hearing device or arranged in the housing electronics carrier.
  • the box is designed by means of a simulation in relation to the lowest possible resonance, both for airborne and structure-borne sound excitation.
  • the volume of the box is preferably also kept as small as possible by means of this or a comparable simulation.
  • the loudspeaker box preferably also has a line bushing sealed by means of an elastomer, through which connection lines (in particular connection wires) of the loudspeaker (or for the loudspeaker) are passed.
  • In 1 shows a hearing device in the form of a hearing aid device, specifically a hearing aid device to be worn behind the ear of a user (also referred to as a hearing device for short, referred to here as “BTE 1”).
  • the BTE 1 comprises a housing 2 in which the electronic components of the BTE 1 are arranged. These electronic components are, for example, two microphones 4, one Loudspeaker 6, a signal processor 8 and a battery module 10.
  • the microphones 4 are used to receive ambient noise and convert it into electrical input signals (also: “microphone signals MS”), which are transmitted by the signal processor 8 (also called “controller ”) are processed (particularly filtered, amplified and/or attenuated as a function of frequency, etc.).
  • the processed input signals are then output as output signals AS to the loudspeaker 6, which converts them into sound signals and forwards them to the user's hearing.
  • a loudspeaker box (abbreviated: "box 12" for short) arranged within the housing 2 .
  • the loudspeaker 6 is fastened in this box 12 in a manner that is as vibration-decoupled as possible by means of a damping element 14 described in more detail below.
  • a tube-like sound tunnel 16 connects to the box 12, which is used to conduct the airborne sound generated by the loudspeaker 6 into a sound tube 18 leading from the housing 2 to the ear of the user, specifically first into a so-called ear hook 20 (in 1 not shown), serves.
  • a sound tube between the loudspeaker 6 and a sound outlet opening 22 (see Fig. 3 ) of box 12 available. This prevents or reduces the transmission of vibrations via the sound tube to the box 12 and thus to the housing 2 of the BTE 1 and in turn to the microphones 4 thereabove.
  • no sound pressure-related pumping of the sound tube can occur within the box 12, which can lead to a loss of performance on the one hand and airborne feedback on the other.
  • the speaker 6 can also be adjusted.
  • the loudspeaker 6 is designed with an open front volume, in that a "cover” of the loudspeaker housing, which would be arranged above the sound emission side of a loudspeaker membrane 24 (see Fig. 3 ) is missing.
  • the speaker 6 is designed as a "balanced armature receiver".
  • the open front volume enables a high sensitivity of the BTE 1 in the high frequency range, especially in the voice range.
  • the loudspeaker 6 is also fixed to the box 12, specifically to a bottom wall 26 of a lower partial shell (the figures do not show any dividing lines between an upper and lower partial shell) of the box 12, concretely glued.
  • the aforementioned damping element 14 is interposed.
  • the damping element 14 represents a damping mat. This is formed by a damping layer 30 (also: “support layer”) made of a first elastomer with a comparatively low Shore hardness and has an approximately rectangular trough, from the trough floor of which several columns 32 protrude as a support structure.
  • the tub is closed by a cover layer 34 made of a second elastomer with a higher Shore hardness, so that the interior of the tub forms a gas-filled damping chamber 36 .
  • the damping element 14 is glued to the bottom wall 26 and the loudspeaker 6 in turn to the damping element 14.
  • An opening 38 in the box 12 for leading through connecting wires 39 to the loudspeaker 6 is sealed sufficiently tightly by means of a rubber insert 40 .
  • the box 12 is also formed of a high permeability, soft magnetic metal.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP22171850.5A 2021-06-14 2022-05-05 Dispositif auditif Pending EP4106348A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021206011.0A DE102021206011A1 (de) 2021-06-14 2021-06-14 Hörvorrichtung

Publications (1)

Publication Number Publication Date
EP4106348A1 true EP4106348A1 (fr) 2022-12-21

Family

ID=81585395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22171850.5A Pending EP4106348A1 (fr) 2021-06-14 2022-05-05 Dispositif auditif

Country Status (3)

Country Link
EP (1) EP4106348A1 (fr)
CN (1) CN218587332U (fr)
DE (1) DE102021206011A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080112584A1 (en) * 2006-11-09 2008-05-15 Phonak Ag Support mount for electronic components
US20140153755A1 (en) * 2011-02-01 2014-06-05 Phonak Ag Hearing device with a transducer module and method for manufacturing a transducer module
US20160277852A1 (en) * 2015-03-19 2016-09-22 Sivantos Pte. Ltd. Hearing device, particularly hearing aid
DE102018221807A1 (de) * 2018-01-08 2019-07-11 Knowles Electronics, Llc Audiovorrichtung mit kontextuell betätigtem ventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080112584A1 (en) * 2006-11-09 2008-05-15 Phonak Ag Support mount for electronic components
US20140153755A1 (en) * 2011-02-01 2014-06-05 Phonak Ag Hearing device with a transducer module and method for manufacturing a transducer module
US20160277852A1 (en) * 2015-03-19 2016-09-22 Sivantos Pte. Ltd. Hearing device, particularly hearing aid
DE102018221807A1 (de) * 2018-01-08 2019-07-11 Knowles Electronics, Llc Audiovorrichtung mit kontextuell betätigtem ventil

Also Published As

Publication number Publication date
US20220400335A1 (en) 2022-12-15
CN218587332U (zh) 2023-03-07
DE102021206011A1 (de) 2022-12-15

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