EP2114089A1 - Procédé et dispositif de détermination d'un degré de fermeture dans des appareils auditifs - Google Patents

Procédé et dispositif de détermination d'un degré de fermeture dans des appareils auditifs Download PDF

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Publication number
EP2114089A1
EP2114089A1 EP09155024A EP09155024A EP2114089A1 EP 2114089 A1 EP2114089 A1 EP 2114089A1 EP 09155024 A EP09155024 A EP 09155024A EP 09155024 A EP09155024 A EP 09155024A EP 2114089 A1 EP2114089 A1 EP 2114089A1
Authority
EP
European Patent Office
Prior art keywords
hearing aid
effective vent
vent diameter
transfer function
active occlusion
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Withdrawn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
EP09155024A
Other languages
German (de)
English (en)
Inventor
Georg-Erwin Arndt
Dirk Junius
Kristin Rohrseitz
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 EP2114089A1 publication Critical patent/EP2114089A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details 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
    • H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion

Definitions

  • the invention relates to a specified in claim 1 method for determining a degree of closure in a hearing aid and a specified in claim 9 hearing aid for determining a degree of closure.
  • a closure effect perceived as unpleasant by the wearer - the so-called occlusion - can occur, since often the space for a pressure equalization bore - the so-called vent - is not sufficiently large. Because of this closure effect, the hearing aid wearer's own voice sounds louder and louder.
  • the occlusion effect occurs z. B. by an inserted into the ear in-the-ear hearing aid or by earmold of a behind-the-ear hearing aid.
  • Vents with a diameter of up to 1mm serve almost exclusively for pressure equalization when inserting an in-the-ear hearing device into the ear or a section of the hearing device to be inserted into the ear.
  • these small vents pressure equalization with temporally short pressure fluctuations in the environment, as z. B. in an airplane, door closing, in the elevator or swallowing can occur.
  • Vents with a larger diameter have a large influence on the low-frequency response, but also reduce the occlusion effect in the ear canal when the hearing aid in the ear or is placed on the auricle, and this at least partially clogged the external auditory canal.
  • All holes and channels in a hearing aid are acoustically considered “long tubes” and have a low pass character, i. they prefer to "escape” low frequencies. Larger diameter holes have larger cutoff frequencies and less damping. In this case, however, a necessary sound separation function between a listener of the hearing device or a radiating sound tube and an ambient microphone in the vicinity of the ear from a certain acoustic amplification can no longer be satisfied, resulting in an acoustic feedback, a "whistling" comes. This acoustic feedback also depends on the diameter of the vents.
  • the stated object is achieved with the method of independent claim 1 and the hearing aid of independent claim 9.
  • this object is achieved by a method for determining a degree of closure in a hearing device having at least one auditory canal microphone and at least one earpiece.
  • the method includes in situ measuring a transfer function between the earpiece and the ear canal microphone, comparing the measured transfer function with pre-determined reference values and / or curves, and determining an effective vent diameter from the comparison, wherein the effective vent diameter indicates the degree of closure .
  • the previously determined reference values or reference curves can, for example, be determined theoretically or recorded empirically.
  • the hearing aid may comprise an active occlusion suppression.
  • a transfer function with active occlusion suppression turned off can be measured, the measured transfer function can be compared with a maximum effect of active occlusion suppression, and From the comparison, a theoretical, maximum effective vent diameter can be determined. It can thereby be determined which maximum improvement by active occlusion suppression is theoretically possible.
  • the hearing aid can comprise active occlusion suppression, a first transfer function with active occlusion suppression switched off and a second transfer function with activated active occlusion suppression measured, first and second effective vent diameters are determined, the first is compared with the second effective vent diameter, and From the comparison, a quality factor of the active occlusion suppression can be determined.
  • a quality measure of the active occlusion suppression can be determined from a comparison of the theoretical, maximum effective vent diameter with the second effective vent diameter. This determines to what extent active occlusion suppression can achieve its theoretical effects in practice.
  • the hearing device can be switched to a measurement mode for performing the in-situ measurement and determining an effective vent diameter. This eliminates external influences.
  • the effective vent diameter may be output for information and / or documentation via a hearing aid interface.
  • the value is easily accessible to a hearing care professional, for example.
  • the method can be carried out exclusively with means of the hearing device.
  • the invention also provides a hearing device for determining a degree of closure with at least one auditory canal microphone and at least one earpiece, wherein the hearing device comprises a control and memory unit for carrying out the method according to the invention, wherein the earpiece and the auditory canal microphone are connected to the control and storage unit.
  • audible measuring signals can be emitted by the listener.
  • the auditory canal microphone can record the acoustic measurement signals emitted by the listener and / or the acoustic measurement signals reflected in the auditory canal.
  • Hearing aids basically have as essential components an input transducer, an amplifier and an output transducer.
  • the input transducer is usually a sound receiver, such as a microphone, and / or an electromagnetic receiver, such as an induction coil.
  • the output transducer is usually as an electro-acoustic transducer, eg as a miniature speaker, or as an electromechanical transducer, eg as a bone conduction listener.
  • the amplifier is usually integrated in a signal processing unit.
  • FIG. 1 This basic structure is also found in FIG. 1 the example of an in-the-ear hearing aid 10 again.
  • a hearing aid housing 7 for carrying in the ear a microphone 3 for receiving the sound from the environment, a control and storage unit 4 with a signal processing unit, not shown, a hearing aid 2 and an ear canal microphone 1 are installed.
  • a battery 5 supplies the electrical components of the hearing aid 10.
  • the output of the microphone 3 is connected to an input of the control and storage unit 4.
  • the processed microphone signals are provided at an output of the control and storage unit 4 and supplied to the handset 2.
  • the thus amplified sound signals enter the external auditory canal 9 via a hearing channel 12. Sound signals reflected in the ear canal 9 and by the eardrum are fed to the ear canal microphone 1 via a microphone channel 11.
  • a vent 6 also referred to as a ventilation duct, ensures pressure equalization when inserting the in-the-ear hearing device 10 into the ear.
  • the Vent 6 also reduces the occlusion feeling of a hearing aid wearer.
  • the hearing aid 10 is sealed on the side facing away from the eardrum by a face plate 8.
  • measurement signals or measurement signal sequences are emitted into the auditory canal 9 by the listener 2 in a measurement mode. These measurement sound signals are reflected in the ear canal 9 and the eardrum and then reach the ear canal microphone 1. From the control and memory unit 4, these signals received from the ear canal microphone 1 are evaluated by the auditory canal microphone 1 received measurement signals, a transfer function is determined and this is compared with stored reference transfer functions or reference values. From this comparison, the control and storage unit 4 calculates an effective vent diameter EV.
  • the effective vent diameter EV is a theoretical measure of occlusion suppression. It indicates how large the diameter of a physical vein would have to be to produce the same occlusion suppression effect.
  • the stored in the control and storage unit 4 reference data were either determined theoretically or come from empirical studies or measurements.
  • Effective Vent Diameters EV can be determined with or without active occlusion suppression turned on.
  • FIG. 2 an inventive method for determining a degree of closure of a hearing aid with at least one auditory canal microphone and at least one listener is shown in a flow chart.
  • a hearing aid is placed in a measurement mode. Subsequently, the hearing aid is inserted into the auditory canal at step 101.
  • an in-situ measurement of a transfer function takes place between the earpiece and the auditory canal microphone.
  • the measured transfer function is stored in a control and storage unit and compared in step 104 with previously determined reference values or reference curves 103. From the comparison, an effective vent diameter EV is determined in step 105.
  • the effective vent diameter EV is a measure of the degree of closure.
  • the measured transfer function shows a high-pass characteristic, which means that low frequencies are attenuated more than higher ones.
  • FIG. 4 an example of a measured transfer function with high-pass characteristic is shown.
  • FIG. 3 A flowchart of a further method according to the invention is shown in FIG FIG. 3 shown.
  • a hearing aid is set to a measurement mode in step 200 and to a measurement in step 201 Auditory canal of a hearing aid wearer used.
  • a first in-situ measurement of a transfer function between the earpiece and the ear canal microphone takes place in step 202.
  • a first effective vent diameter EV1 is obtained from a comparison of the transfer function obtained with the first in-situ measurement with previously determined reference values or Reference curves determined.
  • step 204 the active occlusion suppression is switched on and there is a second in-situ measurement in step 205.
  • a second transfer function between the earpiece and the auditory canal microphone is determined.
  • a second effective vent diameter EV2 is determined from the result of the second in-situ measurement. The determination also takes place via a comparison of the second measured transfer function with previously determined reference values or reference curves.
  • the first effective vent diameter EV1 and the second effective vent diameter EV2 are compared with each other. From the comparison, a quality factor GF is determined in step 208 with the aid of a calculation algorithm, which represents a measure of the effect of the active occlusion suppression.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP09155024A 2008-04-30 2009-03-12 Procédé et dispositif de détermination d'un degré de fermeture dans des appareils auditifs Withdrawn EP2114089A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008021613A DE102008021613A1 (de) 2008-04-30 2008-04-30 Verfahren und Vorrichtung zur Bestimmung eines Verschlussgrads bei Hörgeräten

Publications (1)

Publication Number Publication Date
EP2114089A1 true EP2114089A1 (fr) 2009-11-04

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EP09155024A Withdrawn EP2114089A1 (fr) 2008-04-30 2009-03-12 Procédé et dispositif de détermination d'un degré de fermeture dans des appareils auditifs

Country Status (4)

Country Link
US (1) US20090274314A1 (fr)
EP (1) EP2114089A1 (fr)
AU (1) AU2009201462A1 (fr)
DE (1) DE102008021613A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2661104A3 (fr) * 2012-05-03 2017-10-25 Sivantos Pte. Ltd. Procédé de fabrication d'un embout auriculaire avec évent

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5054698B2 (ja) * 2005-10-17 2012-10-24 ヴェーデクス・アクティーセルスカプ 補聴器フィッティング方法およびシステム
DK2673962T3 (da) 2011-02-11 2020-10-19 Widex As Høreapparat med organ til at estimere ørepropstilpasningen
EP2640095B2 (fr) 2012-03-15 2020-11-18 Sonova AG Méthode d'appareillage d'une aide auditive avec contrôle actif de l'occlusion à un utilisateur
US20170195811A1 (en) * 2015-12-30 2017-07-06 Knowles Electronics Llc Audio Monitoring and Adaptation Using Headset Microphones Inside User's Ear Canal
US10951996B2 (en) * 2018-06-28 2021-03-16 Gn Hearing A/S Binaural hearing device system with binaural active occlusion cancellation
EP3675524A1 (fr) * 2018-12-28 2020-07-01 GN Hearing A/S Procédé de détermination d'un état d'un trajet de rétroaction acoustique d'un dispositif auditif portable sur la tête et dispositif auditif portable sur la tête
US11317222B2 (en) 2019-12-17 2022-04-26 Gn Hearing A/S Method of determining a status of an acoustic feedback path of a head wearable hearing device and a head wearable hearing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045271A1 (fr) * 2005-10-17 2007-04-26 Widex A/S Procede et systeme de reglage d'une prothese auditive
DE102006047965A1 (de) 2006-10-10 2008-01-17 Siemens Audiologische Technik Gmbh Hörhilfsgerät mit einer Okklusionsreduktionseinrichtung und Verfahren zur Okklusionsreduktion
DE102006042083A1 (de) 2006-09-07 2008-03-27 Siemens Audiologische Technik Gmbh Verfahren und Vorrichtung zur Bestimmung eines effektiven Vents

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045271A1 (fr) * 2005-10-17 2007-04-26 Widex A/S Procede et systeme de reglage d'une prothese auditive
DE102006042083A1 (de) 2006-09-07 2008-03-27 Siemens Audiologische Technik Gmbh Verfahren und Vorrichtung zur Bestimmung eines effektiven Vents
DE102006047965A1 (de) 2006-10-10 2008-01-17 Siemens Audiologische Technik Gmbh Hörhilfsgerät mit einer Okklusionsreduktionseinrichtung und Verfahren zur Okklusionsreduktion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2661104A3 (fr) * 2012-05-03 2017-10-25 Sivantos Pte. Ltd. Procédé de fabrication d'un embout auriculaire avec évent

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AU2009201462A1 (en) 2009-11-19
US20090274314A1 (en) 2009-11-05
DE102008021613A1 (de) 2009-11-05

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