EP1903835A2 - Appareil auditif avec dispositif de protection supplémentaire - Google Patents

Appareil auditif avec dispositif de protection supplémentaire Download PDF

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Publication number
EP1903835A2
EP1903835A2 EP07113667A EP07113667A EP1903835A2 EP 1903835 A2 EP1903835 A2 EP 1903835A2 EP 07113667 A EP07113667 A EP 07113667A EP 07113667 A EP07113667 A EP 07113667A EP 1903835 A2 EP1903835 A2 EP 1903835A2
Authority
EP
European Patent Office
Prior art keywords
housing
shielding
magnetic
hearing
induction coil
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.)
Withdrawn
Application number
EP07113667A
Other languages
German (de)
English (en)
Other versions
EP1903835A3 (fr
Inventor
Markus Heerlein
Thomas Kasztelan
Wee Haw Koo
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 GmbH
Original Assignee
Siemens Audiologische Technik GmbH
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 Audiologische Technik GmbH filed Critical Siemens Audiologische Technik GmbH
Publication of EP1903835A2 publication Critical patent/EP1903835A2/fr
Publication of EP1903835A3 publication Critical patent/EP1903835A3/fr
Withdrawn legal-status Critical Current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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/55—Electric hearing aids using an external connection, either wireless or wired
    • H04R25/554—Electric hearing aids using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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

Definitions

  • the present invention relates to a handset for a portable in / on the ear hearing with a soft magnetic housing having on an outer wall a connection device, and an electro-acoustic transducer, which is arranged in the housing and can be controlled via the connection device from the outside.
  • the present invention relates to a hearing device and in particular a hearing aid with such a handset.
  • this handset can also be used for other hearing devices, such as headsets, headphones and the like.
  • Hearing aids are portable hearing aids that are used to care for the hearing impaired.
  • different types of hearing aids such as behind-the-ear hearing aids (BTE), in-the-ear hearing aids (IDO), Concha hearing aids are provided.
  • BTE behind-the-ear hearing aids
  • IDO in-the-ear hearing aids
  • Concha hearing aids are provided.
  • the hearing aids listed by way of example are worn on the outer ear or in the ear canal.
  • bone conduction hearing aids, implantable or vibrotactile hearing aids are also available on the market. The stimulation of the damaged hearing takes place either mechanically or electrically.
  • Hearing aids have in principle 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 as an electromechanical transducer, z. B. bone conduction, realized.
  • the amplifier is usually integrated in a signal processing unit. This basic structure is shown in FIG 1 using the example of a behind-the-ear hearing aid. In a hearing aid housing 1 for Carrying behind the ear, one or more microphones 2 are installed for recording the sound from the environment.
  • a signal processing unit 3 which is also integrated in the hearing aid housing 1, processes 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.
  • the sound is optionally transmitted via a sound tube, which is fixed with an earmold in the ear canal, to the eardrum of the device carrier.
  • the power supply of the hearing device and in particular of the signal processing unit 3 is carried out by a likewise integrated into the hearing aid housing 1 battery. 5
  • an electrodynamic loudspeaker As an electroacoustic transducer, an electrodynamic loudspeaker is often used, which uses the Lorentz force as a power source.
  • a voice coil drives a diaphragm, which generates the sound.
  • This voice coil unintentionally emits magnetic fields to the outside, which disturb other components of the hearing device or of the hearing device.
  • telemetry device which are integrated into the hearing device, affected by the strong interference of the listener with the electrodynamic coil. This is due in particular to the fact that the individual components in a hearing aid must necessarily be arranged very close to each other.
  • the listeners are therefore usually in a soft magnetic housing with high magnetic permeability, which ensures the shielding of the magnetic fields embedded.
  • the metal used is usually a nickel-iron alloy with about 75 to 80% nickel. Such an alloy is known by the name Mu-Metall (Mumetall®).
  • Mu-Metall Mu-Metall
  • a corresponding magnetically shielded electro-acoustic transducer is from the document US 4,956,868 A known. It has two housing halves with high magnetic permeability.
  • the shield of a listener is usually broken on two sides, namely on the side of the sound lasses and on the side of the electrical connection (see FIG 2). For this reason disturbing magnetic fields occur on these pages despite the housing. These interference fields affect other hearing aid components in their function.
  • a hearing aid is known with a handset, which is surrounded by a shielding plate or a shielding capsule.
  • the hearing aid on a compensation coil, which is located in front of, next to or behind the listener. However, it is not inside the shielding capsule.
  • the document describes DE 198 54 201 C2 a hearing aid with an induction coil or telecoil.
  • the device also has a compensation inductor positioned so that its compensation field is directed against the magnetic field of the listener during operation of the induction coil and reduces coupling between the earpiece and the induction coil.
  • the object of the present invention is thus to further reduce the magnetic interference emanating from a listener.
  • this object is achieved by a handset for a portable in / on the ear hearing with a soft magnetic housing having an electrical connection means on an outer wall, and an electro-acoustic transducer which is arranged in the housing and via the connection device can be controlled from the outside, wherein a shielding device is installed in the magnetic shielding housing between the outer wall and the terminal device and the electroacoustic transducer.
  • At least the part of the magnetic interference field is shielded to the outside by the shielding device in the receiver housing, which would penetrate through or on the connection device to the outside.
  • the shielding means includes a magnetic shielding plate.
  • a magnetic shielding plate which may also consist of a mu-metal is very inexpensive and can be mounted easily.
  • the shielding device may comprise an induction coil. In this way, the interference field can be actively canceled by a corresponding opposing field.
  • the induction coil may for example consist of an air coil. This has the advantage that it has a very wide dispersion.
  • the induction coil can be arranged transversely to the magnetic axis of the electromagnetic transducer. This is favorable inasmuch as the working magnetic field of the electroacoustic transducer should be influenced as little as possible.
  • the induction coil is connected in series with the electroacoustic transducer.
  • the handset according to the invention is used in a hearing device, which furthermore has a telemetry device for electromagnetic communication with an external device.
  • the telemetry device of the hearing aid can be operated relatively interference-free.
  • a listener or miniature speaker of a hearing aid is shown in perspective. It is located in a housing 10 made of mu-metal, d. H. soft magnetic nickel-iron alloy of high magnetic permeability. On the front side of the receiver housing 10 is a Schallauslassstutzen 11. On the opposite side two terminal contacts 12, 13 are integrated into the housing wall. These serve for electrical connection of the electroacoustic transducer 14 located in the housing 10. This electroacoustic transducer has a winding with which an alternating magnetic field is generated.
  • the magnetic interference fields of the winding of the electroacoustic transducer 14 are largely shielded by the housing 10.
  • a noticeable leak results in the area of the electrical contacts 12, 13, which do not represent sufficient magnetic shielding.
  • a Mu metal sheet 15 inserted between the electro-acoustic Transducer 14 and the electrical connection device, ie, the electrical contacts 12, 13, a Mu metal sheet 15 inserted.
  • This has at its left and right upper corner in each case a recess 16, 17, through which the strands 18, which connect the contact points 12, 13 with the electro-acoustic transducer 14, are guided.
  • FIG 2 is indicated by an arrow, as the additional shielding plate 15 is inserted into the housing 10.
  • the handset is shown in a plan view with inserted shielding. From this perspective, it is easy to see how the strands 18 are guided by the recesses 16, 17 from the electroacoustic transducer 14 to the contact points 12, 13.
  • the recesses 16, 17 should be kept as small as possible so that the shielding of the magnetic interference fields in the direction of the contact points 12, 13 remains as high-quality as possible.
  • FIG 4 and FIG 5 A second embodiment of a receiver according to the invention is shown in FIG 4 and FIG 5.
  • the construction of the receiver essentially corresponds to that of FIG. 2 and FIG. 3. Accordingly, an electroacoustic transducer 14 is located in a mu-metal housing 10, of which only the bottom shell is shown in the drawing.
  • the sound outlet 11 is located on the opposite side to the side with the connection points 12, 13.
  • the electro-acoustic transducer 14 is electrically connected to the contact points 12, 13.
  • an induction coil 19 is inserted into the housing 10 between the electroacoustic transducer 14 and the connection device with the connection points 12, 13.
  • the induction coil 19 does not act as passive as the shielding plate 15, but actively to compensate for the stray field of the electro-acoustic transducer 14. To the outside, however, this compensation coil also acts like a shielding unit, so that it is generally understood by the term shielding device.
  • the compensation coil 19 is designed here as an air coil. This means that it has no metal core. This has the advantage that it has a relatively high dispersion. Depending on requirements, however, it may also be completely or partially filled with a soft-magnetic core.
  • FIG. 5 shows a plan view of the coil in the state installed in the housing 10. It can be seen that the compensation coil 19 is connected in series with the winding of the electroacoustic transducer 14. The compensation results from the fact that subtract the magnetic fields and thus can not be absorbed by the very sensitive telecoil. The optimal arrangement and alignment of the compensation coil must be determined individually for each handset.
  • the shielding or compensation for some in-the-ear hearing aids makes it possible in the first place for telecoils or telemetry units to be integrated into the hearing aid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Headphones And Earphones (AREA)
EP07113667A 2006-09-19 2007-08-02 Appareil auditif avec dispositif de protection supplémentaire Withdrawn EP1903835A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006043909A DE102006043909B3 (de) 2006-09-19 2006-09-19 Hörer mit zusätzlicher Abschirmeinrichtung und Hörgerät mit diesem Hörer

Publications (2)

Publication Number Publication Date
EP1903835A2 true EP1903835A2 (fr) 2008-03-26
EP1903835A3 EP1903835A3 (fr) 2011-03-16

Family

ID=38828391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07113667A Withdrawn EP1903835A3 (fr) 2006-09-19 2007-08-02 Appareil auditif avec dispositif de protection supplémentaire

Country Status (3)

Country Link
US (1) US20080226108A1 (fr)
EP (1) EP1903835A3 (fr)
DE (1) DE102006043909B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1959712A2 (fr) 2007-02-16 2008-08-20 Siemens Audiologische Technik GmbH Dispositif auditif doté d'une bobine de compensation auditive
EP2375784A3 (fr) * 2010-03-26 2013-05-01 Siemens Medical Instruments Pte. Ltd. Appareil auditif doté d'un blindage de haut-parleur amorphe

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100316896A1 (en) * 2009-06-10 2010-12-16 Research In Motion Limited Battery for wireless mobile communication device
CA2768209C (fr) 2009-07-14 2013-11-19 Research In Motion Limited Batterie a faible interference magnetique
US8357460B2 (en) * 2009-07-14 2013-01-22 Research In Motion Limited Low magnetic interference battery and mobile communication device
DE102010012946B4 (de) * 2010-03-26 2012-11-08 Siemens Medical Instruments Pte. Ltd. Hörgerät mit amorpher Lautsprecherabschirmung
DE112012003755T5 (de) * 2011-09-09 2014-09-18 Knowles Electronics, Llc HF-Abschirmung für akustische Einrichtungen
DE102013210689B3 (de) * 2013-06-07 2014-10-02 Siemens Medical Instruments Pte. Ltd. Antenneneinrichtung für Hörinstrumente
DE102014200524A1 (de) * 2014-01-14 2015-07-16 Siemens Medical Instruments Pte. Ltd. Antenneneinrichtung für Hörinstrumente
DE102016202658A1 (de) * 2016-02-22 2017-08-24 Sivantos Pte. Ltd. Lautsprechermodul für ein Hörgerät und Hörgerät
US10511920B2 (en) 2018-04-13 2019-12-17 Starkey Laboratories, Inc. Ear-worn electronic device incorporating directional magnetic antenna
CN111479201A (zh) * 2020-04-16 2020-07-31 杭州帮贡科技有限公司 一种使用效果好的音响

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671684A (en) * 1970-11-06 1972-06-20 Tibbetts Industries Magnetic transducer
US4956868A (en) * 1989-10-26 1990-09-11 Industrial Research Products, Inc. Magnetically shielded electromagnetic acoustic transducer
DE19854201C2 (de) * 1998-11-24 2001-05-23 Siemens Audiologische Technik Hörhilfegerät mit Induktionsspule zur Reduzierung magnetischer Störfelder
DE10236940B3 (de) * 2002-08-12 2004-02-19 Siemens Audiologische Technik Gmbh Platzsparende Antennenanordnung für Hörhilfegeräte

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1959712A2 (fr) 2007-02-16 2008-08-20 Siemens Audiologische Technik GmbH Dispositif auditif doté d'une bobine de compensation auditive
EP1959712A3 (fr) * 2007-02-16 2009-05-06 Siemens Audiologische Technik GmbH Dispositif auditif doté d'une bobine de compensation auditive
EP2375784A3 (fr) * 2010-03-26 2013-05-01 Siemens Medical Instruments Pte. Ltd. Appareil auditif doté d'un blindage de haut-parleur amorphe
US8649542B2 (en) 2010-03-26 2014-02-11 Siemens Medical Instruments Pte. Ltd. Hearing aid with amorphous loudspeaker shielding

Also Published As

Publication number Publication date
US20080226108A1 (en) 2008-09-18
EP1903835A3 (fr) 2011-03-16
DE102006043909B3 (de) 2008-04-17

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