EP2124481A2 - Procédé et dispositif pour réduire des bruits dans des transmissions sans fil de données dans des applications de prothèses auditifs - Google Patents

Procédé et dispositif pour réduire des bruits dans des transmissions sans fil de données dans des applications de prothèses auditifs Download PDF

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Publication number
EP2124481A2
EP2124481A2 EP09155631A EP09155631A EP2124481A2 EP 2124481 A2 EP2124481 A2 EP 2124481A2 EP 09155631 A EP09155631 A EP 09155631A EP 09155631 A EP09155631 A EP 09155631A EP 2124481 A2 EP2124481 A2 EP 2124481A2
Authority
EP
European Patent Office
Prior art keywords
hearing aid
interference
hearing
receiving antenna
field
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
EP09155631A
Other languages
German (de)
English (en)
Other versions
EP2124481B1 (fr
EP2124481A3 (fr
Inventor
Volker Gebhardt
Peter Nikles
Gottfried Rückerl
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
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Publication date
Application filed by Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2124481A2 publication Critical patent/EP2124481A2/fr
Publication of EP2124481A3 publication Critical patent/EP2124481A3/fr
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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
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception 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; 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
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/51—Aspects of antennas or their circuitry in or for hearing aids

Definitions

  • Another known measure is - where possible - a sufficient distance of the transmitting or receiving coil to the source of interference.
  • FIG. 1 is shown schematically the principle of a geometric adjustment between the receiving antenna and functioning as a source of interference hearing aid.
  • the coupling into the antenna is recorded metrologically, the position of the antenna optimized until the minimum coupling is achieved.
  • the position of the antenna with respect to the source of interference is then firmly fixed by suitable measures (adhesive, holder).
  • the present invention has for its object to avoid the described difficulties as effectively and inexpensively.
  • the invention claims a device for reducing interference caused by unbalanced field lines of at least one hearing device component in a receiving antenna of a wireless data transmission device of a hearing aid.
  • All components of a hearing aid which are current-carrying or charged with electrical charge emit electromagnetic interference fields.
  • Starting point of such interference signals are electrical leads (wires, strands, conductors) or passive and active components.
  • Strong interference signal sources in hearing aids are, for example, clocked voltage regulators, analog and digital semiconductor components, supply and output lines of clocked circuits and the hearing device handset.
  • the field line course of the radiated electrical and magnetic interference fields of a component depends on the shape of the corresponding electrically conductive and / or magnetic parts and of electrically conductive and / or magnetic components in their vicinity.
  • the presence of the electrically conductive and / or magnetic components in the hearing aid leads to a field bending of the interference field. On the one hand, this shifts local zeros of the electrical or magnetic interference field or is lost. On the other hand, the bending of the field lines leads to an asymmetry of the coupling into the receiving antenna. In both cases, the interference coupling increases in the receiving antenna.
  • the receiving antenna or a receiving coil of a wireless signal transmission system uses the inductive range or the typical RF range, the outgoing electromagnetic interference signal is received.
  • the interference of the magnetic field with the receiving antenna depends on the amplitude and direction of the magnetic field with respect to the orientation of the antenna.
  • the magnetic field is preferably perpendicular to the receiving antenna, the interfering field influence is minimized.
  • the interference of the magnetic field in the receiving antenna can also be reduced by geometric arrangements are used in which a symmetrical coupling of the field lines takes place and thus largely extinguished in the coil induced interference currents. For this purpose, symmetry or emission characteristic of the hearing device components can be exploited.
  • the device according to the invention comprises at least one first means arranged in the hearing device, by means of which the asymmetry of the field lines is reduced and the field bending is corrected.
  • the receiving antenna can also be geometrically adapted to the external interference field of the hearing device components in such a way that the interference currents induced in the antenna are compensated by field coupling. As a result, the interference is reduced in the receiving antenna.
  • the first means for reducing the asymmetry of the field lines has metallic properties.
  • a compensating plate is used as the first means, which corrects the field bending in such a way that the coupling is again symmetrical and the disturbing influence is reduced.
  • a compensating plate for the purpose of miniaturization, as a first means, instead of a compensating plate, already existing suitable metallic or magnetic hearing device components (for example microphone, shielding plates) can be used to compensate the field imbalance. As a result, an additional component can be avoided and the small available space in the hearing device can be used optimally for other hearing aid components or the design of the devices can be reduced.
  • suitable metallic or magnetic hearing device components for example microphone, shielding plates
  • the receiving antenna comprises a coil core whose winding has a variable density. This compensates for the resulting induced interference currents in the antenna in the case of asymmetrical interference field coupling.
  • the spool core is asymmetrical, e.g. in conical form, executed. This embodiment is selected when the external field has a field gradient in the coil direction.
  • the invention also claims a method for reducing interference caused by unbalanced field lines of at least one hearing device component in a receiving antenna of a wireless data transmission device of a hearing aid.
  • the unbalanced field lines are corrected and / or compensated.
  • a compensation of an induced interference current resulting from the asymmetrical interference field coupling takes place.
  • FIG. 2a shows the ideal state of an interference field of a listener.
  • the interference in an antenna is minimal due to a symmetrical coupling, since induced interference currents compensate each other.
  • an interference field of a listener is deformed by a metallization of a printed circuit board so that the interference in the antenna increases by unbalanced coupling.
  • the field deformation is compensated such that the coupling is again symmetrical and compensates induced interference currents.
  • FIG. 3 illustrates how for the purpose of miniaturization in place of a compensation plate also existing suitable metallic or magnetic hearing aid components (eg microphone, shielding plates) can be used to compensate for a Feldunsymmetrie.
  • suitable metallic or magnetic hearing aid components eg microphone, shielding plates
  • the receiving antenna can be geometrically designed so that compensate for asymmetrical Störfeldeinkopplung the resulting induced noise currents in the antenna.
  • FIGS. 4a-4d Conceivable with an antenna coil are all possible combinations of the geometry of the coil core and the winding density of the coil turns.
  • the coil core may be tapered or the winding density may be gradually reduced when the outer field has a corresponding field gradient in the coil direction.
  • the optimization of both parameters with known interference field can also be computer-aided.
  • the adaptation of the coil geometry to the interference field has the advantage that no additional components such as sheets for field shielding or to compensate for Feldunsymmetrie must be introduced into the hearing aid.
  • the small available space in the hearing aid can in turn be used optimally for other hearing aid components or the design of the hearing aids can be further minimized.

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)
  • Noise Elimination (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)
EP09155631.6A 2008-05-05 2009-03-19 Dispositif pour réduire des bruits dans des transmissions sans fil de données dans des applications de prothèses auditifs Active EP2124481B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008022126 2008-05-05

Publications (3)

Publication Number Publication Date
EP2124481A2 true EP2124481A2 (fr) 2009-11-25
EP2124481A3 EP2124481A3 (fr) 2012-10-24
EP2124481B1 EP2124481B1 (fr) 2013-10-30

Family

ID=40600186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09155631.6A Active EP2124481B1 (fr) 2008-05-05 2009-03-19 Dispositif pour réduire des bruits dans des transmissions sans fil de données dans des applications de prothèses auditifs

Country Status (3)

Country Link
US (1) US20090274328A1 (fr)
EP (1) EP2124481B1 (fr)
DK (1) DK2124481T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210689B3 (de) * 2013-06-07 2014-10-02 Siemens Medical Instruments Pte. Ltd. Antenneneinrichtung für Hörinstrumente
EP2214423A3 (fr) * 2009-02-03 2016-03-30 Sivantos Pte. Ltd. Appareil auditif avec compensation du bruit et procédé de conception correspondant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE537359C2 (sv) 2011-02-24 2015-04-14 Craj Dev Ltd Enhet för hörselhjälpmedelssystem
DE102014200524A1 (de) * 2014-01-14 2015-07-16 Siemens Medical Instruments Pte. Ltd. Antenneneinrichtung für Hörinstrumente
EP3148219B1 (fr) * 2015-09-28 2020-12-02 Oticon A/s Dispositif auditif
US11131601B2 (en) * 2017-11-30 2021-09-28 Rain Tree Photonics Pte. Ltd. Method for in-line optical testing
US10511920B2 (en) 2018-04-13 2019-12-17 Starkey Laboratories, Inc. Ear-worn electronic device incorporating directional magnetic antenna
WO2020028087A1 (fr) * 2018-07-31 2020-02-06 Earlens Corporation Démodulation dans un système auditif de contact

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19854201A1 (de) 1998-11-24 2000-06-21 Siemens Audiologische Technik Hörhilfegerät mit Induktionsspule sowie Verfahren zur Reduzierung magnetischer Störfelder
WO2005020549A1 (fr) 2003-08-26 2005-03-03 Oticon A/S Dispositif de communication numerique
EP1651006A2 (fr) 2004-10-20 2006-04-26 Siemens Audiologische Technik GmbH Prothèse auditive avec boucle de ligne pour la compensation des champs inductifs perturbateurs
DE102006049471A1 (de) 2006-10-16 2008-04-24 Siemens Audiologische Technik Gmbh Verfahren zur Schätzung eines Störfelds für eine Spule

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US2240849A (en) * 1939-04-17 1941-05-06 Don Lee Broadcasting System Band-pass filter
US2691767A (en) * 1951-06-09 1954-10-12 Aladdin Ind Inc Radio-frequency transformer
US2838738A (en) * 1955-07-06 1958-06-10 Radio Ind Inc Variable inductance device
US3648205A (en) * 1970-10-12 1972-03-07 Gen Electric Device for varying the inductance of a helical inductor
DE8708892U1 (de) * 1987-06-26 1988-10-27 Siemens AG, 1000 Berlin und 8000 München Hörgerätspule mit einer Spulenwicklung
US6546109B1 (en) * 2000-01-03 2003-04-08 Louis Thomas Gnecco Electromagnetically shielded hearing aids
US7043041B2 (en) * 2000-10-04 2006-05-09 Sonionmicrotronic Nederland B.V. Integrated telecoil amplifier with signal processing
JP2007073623A (ja) * 2005-09-05 2007-03-22 Kobe Steel Ltd 超電導コイル製造用巻枠および超電導ソレノイド巻コイル
US8688036B2 (en) * 2006-08-31 2014-04-01 Red Tail Hawk Corporation Wireless communications headset system employing a loop transmitter that fits around the pinna

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19854201A1 (de) 1998-11-24 2000-06-21 Siemens Audiologische Technik Hörhilfegerät mit Induktionsspule sowie Verfahren zur Reduzierung magnetischer Störfelder
WO2005020549A1 (fr) 2003-08-26 2005-03-03 Oticon A/S Dispositif de communication numerique
EP1651006A2 (fr) 2004-10-20 2006-04-26 Siemens Audiologische Technik GmbH Prothèse auditive avec boucle de ligne pour la compensation des champs inductifs perturbateurs
DE102006049471A1 (de) 2006-10-16 2008-04-24 Siemens Audiologische Technik Gmbh Verfahren zur Schätzung eines Störfelds für eine Spule

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZIMMERMANN, J. E.: "SQUID Instruments and Shielding for low-level magnetic measurements", J. APPL. PHYS., vol. 48, 1977, pages 702 - 710

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214423A3 (fr) * 2009-02-03 2016-03-30 Sivantos Pte. Ltd. Appareil auditif avec compensation du bruit et procédé de conception correspondant
DE102013210689B3 (de) * 2013-06-07 2014-10-02 Siemens Medical Instruments Pte. Ltd. Antenneneinrichtung für Hörinstrumente
US9521494B2 (en) 2013-06-07 2016-12-13 Sivantos Pte. Ltd. Antenna device for hearing instruments and a hearing instrument

Also Published As

Publication number Publication date
DK2124481T3 (da) 2013-12-16
EP2124481B1 (fr) 2013-10-30
EP2124481A3 (fr) 2012-10-24
US20090274328A1 (en) 2009-11-05

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