EP2594089A1 - Dispositif de protection pour microphone - Google Patents

Dispositif de protection pour microphone

Info

Publication number
EP2594089A1
EP2594089A1 EP10771348.9A EP10771348A EP2594089A1 EP 2594089 A1 EP2594089 A1 EP 2594089A1 EP 10771348 A EP10771348 A EP 10771348A EP 2594089 A1 EP2594089 A1 EP 2594089A1
Authority
EP
European Patent Office
Prior art keywords
microphone
membrane
protection device
microphone protection
housing
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.)
Granted
Application number
EP10771348.9A
Other languages
German (de)
English (en)
Other versions
EP2594089B1 (fr
Inventor
Anton Gebert
Marco Lederer
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
Siemens Medical Instruments 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 Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2594089A1 publication Critical patent/EP2594089A1/fr
Application granted granted Critical
Publication of EP2594089B1 publication Critical patent/EP2594089B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04R1/04—Structural association of microphone with electric circuitry therefor
    • 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
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/652—Ear tips; Ear moulds
    • H04R25/654—Ear wax retarders
    • 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
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • 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

Definitions

  • the invention relates to a microphone protection device for preventing the ingress of dirt and / or moisture into a sound inlet opening of a microphone, comprising a dirt and / or moisture repellent and / or dirt and / or moisture impermeable membrane.
  • the invention relates to a hearing aid with a corresponding microphone protection device and a microphone unit with a microphone and a microphone protection device.
  • the microphone protection device should prevent the penetration of dirt and moisture into a microphone as completely as possible. Furthermore, the microphone protection device should attenuate as little as possible an acoustic input signal into the microphone. In addition, the microphone protection device should be effective for as long as possible and in particular not clogged ⁇ fen. These requirements can only be met if a relatively large surface is provided for the membrane of the microphone protection device. However, this is contrary to the aim of hearing aids miniaturization.
  • only a relatively narrowly limited area for the microphone protection device can be provided on the housing surface of the hearing aid device for each microphone.
  • microphone protection devices having provided with a water-repellent coating grid. Although these have only a low attenuation, they only offer a comparatively small water column in terms of water resistance.
  • microphone protection devices with flat, (micro) porous membranes which have a high water level allow column, but require a relatively large membrane area for low attenuation.
  • EP 310 866 A1 describes a microphone protection device with a dirt and water-impermeable membrane made of Gore-Tex material.
  • Object of the present invention is to provide a microphone protection device, in particular for a hearing aid device, which offers a high waterproofness and low acoustic damping with a relatively small footprint.
  • the microphone protection device comprises a dirt and / or moisture-repellent and dirt and / or moisture-impermeable membrane, the A ⁇ penetration of dirt and / or moisture from entering the microphone.
  • the membrane is at least partially zylin ⁇ dermantelelförmig or arranged on a Zylindermantelflä ⁇ che to achieve a relatively large surface area in a small footprint on the housing surface of an electro-acoustic device, for which the microphone protection device is provided.
  • cylinder-jacket-shaped or “cylindrical” means that at least part of the membrane forms a cylinder jacket.
  • the base of the cylinder can have any shape. However, a circular, rectangular, in particular quadrati ⁇ cal, or elliptical base are advantageous.
  • a cavity is thus formed, however, has at least one offe ⁇ ne, that is not sealed by the membrane side up. The membrane thus does not form a completely closed one
  • the at least one of ⁇ fene side is closed by no other material or cover element.
  • the open side can also for example, be covered by a "coarse-meshed" compared to the membrane grid.
  • the open side is the base and / or the top surface of the cylinder formed by the membrane.
  • the cylinder jacket-shaped design can for example take place in that a flat, rectangular membrane is placed ⁇ rolls.
  • At least one membrane which does not form a complete cylinder jacket can also be applied to a carrier, in particular a cylinder jacket-shaped carrier, so that the membrane lies on a cylinder jacket surface or at least partially forms it.
  • a carrier in particular a cylinder jacket-shaped carrier
  • a plurality of "small" membranes can thus be arranged on a cylinder-shaped carrier.
  • the carrier is thereby ⁇ least in sections, in particular in the field of Membra ⁇ NEN, permeable to air and acoustically transparent.
  • the invention provides the advantage that at the Gezzauseoberflä- surface of the electro-acoustic device for membrane protection device at least substantially only room for one (open) end (bottom or top surface of the cylinder) is required of the zylin ⁇ dermantelförmig formed membrane. This makes it possible to reduce the space requirement on the housing surface of the electroacoustic device, although a relatively large effective surface of the membrane for protecting the microphone is effective.
  • the microphone protection device is designed as a structural unit of a likewise cylindrical jacket-shaped, outer shell and the membrane arranged therein.
  • the microphone protection device thus has the structure of a double-walled tube.
  • the outer shell preferably acts as a membrane carrier.
  • the membrane carrier simplifies installation and replacement of the membrane with respect to an electroacoustic device.
  • the outer shell having a larger diameter than the membrane surrounded by the membrane and the äuße ⁇ re envelope are advantageously spaced from each other. They have before ⁇ preferably the same axis of symmetry.
  • the area between the membrane and the sheath is preferably closed, for example by corresponding projections on the sheath, so that neither dirt nor moisture can penetrate into the intermediate space between the membrane and the sheath.
  • the area between the membrane and the shell can also be provided with an acoustically transparent material, such as a
  • the open end can also be provided with a, preferably in wesent ⁇ union disc-shaped, protective cover.
  • This protective cover consists for example of a relative to the membrane relatively coarse grid, which prevents coarse dirt particles get to the membrane.
  • the microphone protection device according to the invention is particularly advantageous for installation in a hearing aid, as in Hör Schuowski implican generally as far as possible Miniatu ⁇ tion of the devices is sought and claims the microphone protection device according to the invention, only relatively little space on the housing surface of a Hör Vietnamesege ⁇ device.
  • the microphone protection device according to the invention is not limited to installation in a hearing aid. Instead, it can also be installed in other electro-acoustic devices, in particular communication devices such as mobile telephones, headsets, PDAs, etc.
  • a portable behind the ear hearing aid with a housing having a left side of the housing and a symmetrical thereto trained right side of a microphone protection device can be installed and dimensioned in the hearing aid such that a first open end of the cylinder jacket-shaped microphone protection device in the left side of the housing and a second end of the cylinder jacket-shaped membrane opens in the right side of the housing of the hearing aid in question.
  • the membrane thus has the form of a tube open on two sides.
  • the tube-shaped membrane thus forms ⁇ with a channel through the hearing aid from one Genzousesei ⁇ te to the other. This has the advantage that such a membrane is particularly easy to clean or replace if necessary.
  • a suitable tool can be particularly easily introduced into the channel formed by the membrane for cleaning or replacement of the membrane.
  • Different hearing aids for the supply of the left and the right ear can then be generated in a simple manner that each of the microphone openings closed on one side of the housing, for example, be glued over.
  • the envelope surrounding the membrane of the microphone protection device is formed integrally with the housing of the hearing aid device.
  • the membrane is then subsequently inserted into the correspondingly designed, finished housing, eg glued.
  • a further embodiment of the invention provides a micro ⁇ fonaji front with a microphone and an associated microphone protection device according to the invention as a structural unit. The invention will be explained in more detail with reference toPhilsbeispie ⁇ len. Show it: 1 shows a hearing aid according to the prior art in the block diagram,
  • FIG. 2 shows a microphone protection device according to the invention and a microphone connected thereto;
  • FIG. 3 shows a microphone protection device and a microphone connected thereto in a sectional view
  • FIG. 4 shows a further embodiment of a microphone protection device according to the invention
  • Figure 5 shows a hearing aid with built-in microphone protection devices according to the invention.
  • Hearing devices basically include as essential components an input transducer, an amplifier and an output transducer.
  • the input transducer is usually a sound receiver, z. As a microphone, and / or an electromagnetic receiver, for. B. an induction coil.
  • the output transducer is usually used as an electroacoustic transducer, z. As miniature speaker or handset, or as an electromechanical transducer, z. B. bone conduction, realized.
  • the amplifier is usually tegriert in a signal processing unit in ⁇ . In the embodiment according to FIG.
  • one or more microphones 2 for receiving the sound from the environment are installed in a hearing device housing 1 intended to be worn behind the ear.
  • a signal processing unit 3 which is also located in the hearing aid housing 1, proces ⁇ tet the microphone signals and amplifies them.
  • the output signal of the signal processing unit 3 is transmitted to a loudspeaker or earpiece 4, which outputs an acoustic signal. If necessary, the sound is transmitted to the user's eardrum via a sound tube, which is fixed in the ear canal with an earmold.
  • the power supply of the hearing Device and in particular the signal processing unit 3 is carried out by a likewise in the hearing aid housing 1 ⁇ arranged battery 5.
  • FIG. 2 shows a microphone unit with a microphone 21 and a firmly connected microphone protection device 22 according to the invention.
  • the microphone protection device 22 comprises a cylinder jacket-shaped, consisting of an impermeable Ma ⁇ material envelope 23 and disposed within the shell 23 and also cylinder jacket-shaped membrane 24.
  • the shell 23 and the membrane 24 have the same axis of symmetry in the exemplary embodiment and their cross-sections are concentric circles.
  • a front end of the cylindrical circumferential membrane 24 and the cylinder-jacket-shaped shell 23 is a one piece with the sleeve 23 formed substantially disc-shaped portion 25, the ingress of dirt or moisture into the space between the cylinder-jacket-shaped shell 23 and the cylinder jacket-shaped membrane 24 prevented.
  • the disk-shaped Be ⁇ rich 25 serves to attach the membrane 24 within the shell 23rd
  • the construction of the microphone protection device 22 and the connection to the microphone 21 are further clarified by the sectional drawing according to FIG.
  • the arrangement of the cylinder jacket-shaped membrane 24 within the likewise cylinder-jacket-shaped configuration is shown.
  • Deten envelope 23 can be seen. Due to the distance of the membrane 24 from the sheath 23 and the space formed thereby almost the entire surface of the membrane 24 for protection against the ingress of dirt or moisture into the microphone 21 is effective.
  • Typical diameters of the diaphragm 24 with a cylindrical surface, in particular having a circular cross-section, with at least one open end face of the cylinder are in the range of 1 mm to 1.5 mm for hearing aid applications.
  • Typical diameters of the sheath 23 are in the range between 1.5 mm and 2.5 mm.
  • the height of the cylinder jacket formed by the membrane is preferably in the range of 2 mm to 6 mm in hearing aid applications.
  • the height of the cylinder jacket-shaped shell may slightly exceed the height of the membrane if necessary.
  • FIG. 4 shows, in a schematic representation, another embodiment of a microphone unit 30 according to the invention, which essentially consists of a microphone 31 and a microphone protection device 32.
  • the microphone protection device 32 and the microphone 31 are both joined together in the longitudinal direction. This means that the axis of symmetry in the longitudinal fontik adopted ⁇ direction of the microphone 31 and the axis of symmetry 32 parallel micro- or even coincide.
  • Sound entering the microphone unit 30 via a sound inlet opening 38 must first pass through the membrane 34 in order to pass into a cavity between the outer shell 33 of the microphone protection device 32 and the membrane 34.
  • this cavity is formed by an airtight closing element 36 closed.
  • the microphone protection device also has the advantage that vibrations which are transmitted to the microphone protection device and in particular its diaphragm, which can be transmitted, for example, to a microphone protection device arranged in a hearing aid device, can be largely compensated by a receiver likewise arranged there.
  • a portion of the membrane is moved relative to the shell towards the shell and moves within the shell of this part ⁇ area opposite second portion of the shell away.
  • the movements transmitted to the membrane by the movement (vibration) of the envelope compensate each other with respect to their acoustic effect.
  • FIG. 5 shows two microphone protection devices 41 and 42 according to the invention, which are installed in a behind the ear portable hearing aid 43.
  • these openings are provided with relatively coarse-meshed protective gratings 44 and 45. These may optionally be subsequently lent after the assembly of the hearing aid 43 in question on the housing and, if necessary, be easily removed again.
  • the arrangement according to the invention has the further advantage over the already mentioned advantages that the membrane is not directly accessible from the outside and therefore can not be accidentally touched with the fingers, for example. As a result, on the one hand unpleasant, caused by the contact In addition, the membrane is better protected against mechanical stress than would be the case with a membrane arranged on the surface of the device.
  • the arrangement shown has a further advantage: the receiving point of a microphone is usually located approximately in the middle of each sound inlet opening in the housing of a respective device. Since only relatively little space in relation to the desired membrane surface is required on the housing surface in the invention, the sound entry openings belonging to different microphones can be located very close to one another. It can therefore acoustically very short microphone array, ie microphones with ge ⁇ ringem acoustically relevant distance to be established.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

L'invention vise à créer un dispositif de protection pour microphone (22, 32) destiné à protéger un microphone de l'humidité et/ou de la poussière, ce dispositif présentant un encombrement relativement faible pour son montage dans un appareil électroacoustique tout en ayant une surface active relativement grande. A cet effet, le dispositif de protection pour microphone (22, 32) selon l'invention comporte une membrane (24, 34) au moins partiellement en forme d'enveloppe cylindrique pour empêcher la pénétration de poussières et/ou d'humidité dans un orifice d'entrée sonore (26, 37) d'un microphone (21, 31).
EP10771348.9A 2010-08-20 2010-08-20 Dispositif de protection pour microphone Active EP2594089B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/062172 WO2012022382A1 (fr) 2010-08-20 2010-08-20 Dispositif de protection pour microphone

Publications (2)

Publication Number Publication Date
EP2594089A1 true EP2594089A1 (fr) 2013-05-22
EP2594089B1 EP2594089B1 (fr) 2014-04-30

Family

ID=43735092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771348.9A Active EP2594089B1 (fr) 2010-08-20 2010-08-20 Dispositif de protection pour microphone

Country Status (5)

Country Link
US (1) US9380367B2 (fr)
EP (1) EP2594089B1 (fr)
CN (1) CN103069845B (fr)
DK (1) DK2594089T3 (fr)
WO (1) WO2012022382A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015208846B3 (de) * 2015-05-13 2016-08-11 Sivantos Pte. Ltd. Hörgerät
CN108886646B (zh) * 2015-10-20 2019-12-20 启学·李查 声音接收器和具有该声音接收器的个人音频系统及其应用
CN109840329A (zh) * 2017-11-29 2019-06-04 北京搜狗科技发展有限公司 一种翻译机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713369U1 (de) 1987-10-05 1989-02-09 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Verschließen von Öffnungen an Hörgeräten oder Ohrpaßstücken für Hörgeräte
DE102005012149B3 (de) * 2005-03-16 2006-09-21 Siemens Audiologische Technik Gmbh Abdeckvorrichtung für mindestens einen Mikrofoneingang eines Hörgeräts und Hörgerät mit einer Abdeckvorrichtung
DE102005019148B3 (de) * 2005-04-25 2006-08-17 Siemens Audiologische Technik Gmbh Hörgerät mit Ohrkanalmikrofon
US20070003081A1 (en) * 2005-06-30 2007-01-04 Insound Medical, Inc. Moisture resistant microphone
DK1915032T3 (da) 2006-10-18 2012-05-07 Siemens Audiologische Technik Høreapparat
EP2127466B1 (fr) 2007-03-27 2016-06-29 Sonova AG Dispositif d'écoute avec protection de microphone
DE102007034230A1 (de) 2007-07-23 2009-01-29 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung mit Mikrofonabdeckung
WO2009083007A2 (fr) * 2007-12-27 2009-07-09 Gn Resound A/S Appareil auditif à paroi constituée d'une carte à circuit imprimé

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012022382A1 *

Also Published As

Publication number Publication date
US20130148832A1 (en) 2013-06-13
WO2012022382A1 (fr) 2012-02-23
CN103069845B (zh) 2015-08-19
DK2594089T3 (da) 2014-08-11
EP2594089B1 (fr) 2014-04-30
CN103069845A (zh) 2013-04-24
US9380367B2 (en) 2016-06-28

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