EP2200346A2 - Prothèse auditive avec commutation automatique à algorithme - Google Patents

Prothèse auditive avec commutation automatique à algorithme Download PDF

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Publication number
EP2200346A2
EP2200346A2 EP09178221A EP09178221A EP2200346A2 EP 2200346 A2 EP2200346 A2 EP 2200346A2 EP 09178221 A EP09178221 A EP 09178221A EP 09178221 A EP09178221 A EP 09178221A EP 2200346 A2 EP2200346 A2 EP 2200346A2
Authority
EP
European Patent Office
Prior art keywords
microphones
signal
processing
hearing
decision
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
EP09178221A
Other languages
German (de)
English (en)
Other versions
EP2200346A3 (fr
EP2200346B1 (fr
Inventor
Tobias Wurzbacher
Matthias Fröhlich
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
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Application filed by Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2200346A2 publication Critical patent/EP2200346A2/fr
Publication of EP2200346A3 publication Critical patent/EP2200346A3/fr
Application granted granted Critical
Publication of EP2200346B1 publication Critical patent/EP2200346B1/fr
Revoked 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
    • H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power
    • H04R25/305—Self-monitoring or self-testing
    • 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
    • H04R2225/39—Aspects relating to automatic logging of sound environment parameters and the performance of the hearing aid during use, e.g. histogram logging, or of user selected programs or settings in the hearing aid, e.g. usage logging
    • 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
    • H04R2225/61—Aspects relating to mechanical or electronic switches or control elements, e.g. functioning
    • 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
    • H04R25/43—Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics

Definitions

  • the present invention relates to a hearing aid with a plurality of microphones, a decision device for deciding whether one of the microphones is defective, and a signal processing device for processing the signals of the microphones with a plurality of processing algorithms.
  • a hearing device here means any sound-emitting device that can be worn on or in the ear or on the head, in particular a hearing aid, a headset, 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), hearing aid with external receiver (RIC: receiver in the canal) and in-the-ear hearing aids (IDO), e.g. Concha hearing aids or canal hearing aids (ITE, CIC).
  • BTE behind-the-ear hearing aids
  • RIC hearing aid with external receiver
  • IDO in-the-ear hearing aids
  • ITE canal hearing aids
  • 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 in FIG. 1 shown using the example of a behind-the-ear hearing aid. In a hearing aid housing 1 for carrying behind the ear are one or more microphones 2 to Built-in sound recording 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 the signal processing unit 3 is effected by a likewise integrated into the hearing aid housing 1 battery. 5
  • Modern hearing aids often have two or more microphones, so that the signal processing can evaluate two or more microphone signals. If one of the required microphone signals fails, the corresponding hearing aid algorithms are operated with a signal constellation which is not provided in the design of the signal processing. This causes a performance penalty in noise reduction and reduces the sound quality. In addition, speech intelligibility diminishes in environmental noise.
  • the failure of a microphone signal can be different in nature. Either the failure permanently due to a mechanical defect, a gradual deterioration by the aging of the microphones or only temporarily due to a dirty microphone opening or a partial occlusion of the hearing aid z. B. by hair, hat or scarf.
  • Starkey a self-check mode of a hearing aid is known in which the hearing aid wearer can put the hearing aid by a mechanical action in a state in which the hearing aid by means of a functional test itself checks.
  • a stimulus is emitted by the hearing aid to test among other things, the hearing aid microphone and the speaker.
  • the self-test must be triggered by a user action and a constant control during the hearing aid operation does not take place.
  • a detection circuit is used to monitor the operational status of at least one transducer by measuring the output energy level of the transducer and comparing it to a predetermined threshold level. The detection circuit generates an error message when the measured output energy level drops below the threshold level.
  • the object of the present invention is therefore to be able to make better use of a hearing aid in the event of partial failure or complete failure of one of several microphones at least temporarily.
  • this object is achieved by a hearing device with a plurality of microphones, a decision device for deciding whether one of the microphones is defective, and a signal processing device for processing the signals of the microphones with a plurality of processing algorithms, wherein the signal processing device automatically from a first of the processing algorithms in a second Processing algorithms switch when it is decided by the decision device that one of the microphones is defective.
  • a “defective microphone” is here also understood to mean a microphone which is covered, for example, by hair, headgear or soiling.
  • the first signal processing algorithm is designed for multi-channel processing and the second signal processing algorithm for single-channel processing, and the signal processing device switches from the multi-channel processing algorithm to the single-channel processing algorithm if one of the microphones is defective. In this way it can be avoided that an undefined channel signal contributes to the output signal.
  • the signal processing device may be configured to disable a multi-channel processing algorithm when one of the microphones is defective. The hearing aid then no longer offers multichannel processing if this would possibly permit or require the hearing situation.
  • the decision device can have a level meter with which the levels of the microphone signals are measured in order to derive a decision therefrom.
  • a prediction method can additionally be used: one microphone signal is estimated from the other. If the prediction coefficients in their temporal and / or spectral distribution deviate too much from the expected ones, there is a failure of a microphone. The combination of a level meter and a prediction analysis makes it relatively easy to conclude that a microphone has failed.
  • One of the processing algorithms can realize a directional microphone mode and another an omnidirectional mode, wherein the decision device switches into the omnidirectional mode if one of the microphones is defective.
  • the directional microphone is only utilized if there are actually at least two useful evaluable microphone signals.
  • the hearing device according to the invention may comprise a memory device with which a decision of the decision device can be logged together with a time information.
  • a memory device with which a decision of the decision device can be logged together with a time information.
  • the second processing algorithm which is switched in the case of a microphone failure, starting from the first processing algorithm, may not be explicitly tuned to the first processing algorithm. If the two processing algorithms are completely independent from each other, a switching of the hearing device by the user is usually audible. In this way, the user can easily recognize when a microphone fails.
  • the signal processing device can automatically generate a warning signal for warning the user when automatically switching over the processing algorithms.
  • a warning signal makes the user even easier to detect the failure of a microphone.
  • a spectral reference curve for one or more of the microphones for deciding on a defect can be stored in the decision device. This makes it possible to reliably monitor the spectral sensitivity of a microphone when, for example, an averaged signal spectrum is obtained from the microphone.
  • the decision device can base the decision on a loudness of a sound signal recorded by the microphone or microphones.
  • decisions of the decision maker can also be made on the basis of psychoacoustic variables, eg. B. only be switched when the user can perceive a defect in the first place.
  • FIG. 2 reproduced block diagram shows at the signal input two microphones 10 and 11.
  • the microphone signals are fed to a signal processing device 12.
  • the signal processing device 12 has a multi-channel processing algorithm 13 (here two-channel). It is suitable for directional microphones.
  • the signal processing device 12 has a single-channel processing algorithm 14. It is fed either by the microphone signal of one microphone 10 or by the microphone signal of the other microphone 11. Which microphone signal is forwarded to the single-channel processing algorithm 14 is determined by a switch 15.
  • the changeover switch 15 is triggered by a decision device 16 which performs a signal comparison or a signal monitoring of the two microphone signals of the microphones 10 and 11.
  • the decision device 16 decides whether a microphone failure exists or not. In this case, it measures the levels of the microphone signals and compares them with stored reference curves RK.
  • the decision device 16 outputs which of the two microphones 10, 11 is defective. Accordingly, the changeover switch 15 is activated. However, the output signal of the decision device 16 is also used for a further changeover switch 17, which is connected downstream of the signal processing device 12. At the input of the further changeover switch 17 is the output signal of the two-channel processing algorithm 13 and the single-channel processing algorithm 14. If the decision device 16 has decided that one of the microphones 10, 11 has failed, the changeover switch 17 switches from two-channel operation to single-channel operation. This means here that instead of the output signal of the two-channel processing algorithm 13, but the output of the single-channel processing algorithm 14 to the output-side speaker 18 is continued. Possibly. the output signal of the decision device 16 can be used in addition to the control of the two switches 15 and 17 in addition to generate an error message 19 or a service request.
  • the hearing aid it is thus possible to automatically detect a failure of one of the microphone signals and to switch the signal processing into an emergency operation.
  • the emergency operation here is that only a microphone signal to preserve the sound quality is processed, as in a hearing aid, in the house of only a microphone signal is present.
  • signal algorithms which rely on two or more microphone signals are either deactivated or, if possible, replaced by their single-channel counterpart (eg a dual-microphone noise reduction algorithm (DMG) replaced by single-microphone Noise reduction algorithm (SMG)).
  • DMG dual-microphone noise reduction algorithm
  • SMG single-microphone Noise reduction algorithm
  • the automatic detection of a signal failure on one of the microphones can be realized via integrated in the hearing aid level meter. Is the comparison of one of the two signal levels on average much lower than z. B. a statistically stored or dynamically formed reference value, there is a signal failure. If this happens, the appropriate hearing aid algorithms should be switched or blended over an additional control variable and not remain in an undefined state.
  • the directional microphone can be explicitly set in the "Omni mode", the corresponding feedback path can be switched off for simplification or - as already mentioned - the two-channel DMG can be replaced by the simplified SMG approach.
  • substitute algorithms are activated which differ as little as possible from actual algorithms, eg. B. microphone frequency response, which are balanced.
  • a corresponding error detection preferably with time stamp, should be stored so that the acoustician can fix the error on the next visit and also learns when it occurred.
  • support can be provided by an explicit warning signal.
  • a level comparison is advisable to deposit a reference curve for the microphones in the hearing, then either by means of a long-term spectrum on any microphone signal or by the spectral distribution of a certain known, stored in the hearing aid and preferably in normal use automatically (eg Power-on melody) or user-initiated (eg, program switch acknowledge signal), and resume the microphone sound on each reboot or at a defined time (eg, after program switchover).
  • the curves could additionally be weighted according to dBA or loudness, to intervene only when the hearing aid wearer perceptually senses a change.
  • the feedback to the hearing aid wearer via such an emergency operation can be made visually via an LED on the hearing aid or on a (preferably wirelessly) connected peripheral device, by an optical text message on a peripheral device and / or acoustically by a corresponding warning message by means of tones (eg in the case of repetition the next time the hearing aid is switched on via another welcome melody) or text message.
  • a particular advantage of the invention lies in the constant monitoring and evaluation of the microphone signals, in order then to switch over to a single-microphone emergency program when needed during operation.
  • signal distortions can be systematically eliminated, which otherwise result from a faulty operation of the two-channel algorithms.
  • An abrupt one Failure is unlikely and allows the further use of the hearing aid until an acoustician can be visited.
  • the hearing aid automatically reports an event-based service request.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
EP09178221.9A 2008-12-22 2009-12-07 Prothèse auditive avec commutation automatique à algorithme Revoked EP2200346B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008064430A DE102008064430B4 (de) 2008-12-22 2008-12-22 Hörvorrichtung mit automatischer Algorithmenumschaltung

Publications (3)

Publication Number Publication Date
EP2200346A2 true EP2200346A2 (fr) 2010-06-23
EP2200346A3 EP2200346A3 (fr) 2013-06-19
EP2200346B1 EP2200346B1 (fr) 2018-08-01

Family

ID=42027894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09178221.9A Revoked EP2200346B1 (fr) 2008-12-22 2009-12-07 Prothèse auditive avec commutation automatique à algorithme

Country Status (5)

Country Link
US (1) US8442245B2 (fr)
EP (1) EP2200346B1 (fr)
CN (1) CN101765048B (fr)
DE (1) DE102008064430B4 (fr)
DK (1) DK2200346T3 (fr)

Cited By (1)

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EP2373065B1 (fr) 2010-03-17 2016-01-13 Sivantos Pte. Ltd. Dispositif auditif et procédé de production d'une caractéristique de direction omnidirectionnelle

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EP2893718A4 (fr) * 2012-09-10 2016-03-30 Nokia Technologies Oy Détection de défaillance de microphone
US20160127842A1 (en) * 2013-06-13 2016-05-05 Sonova Ag Method for operating a hearing system and a device of a hearing system
US9781522B2 (en) 2013-07-23 2017-10-03 Advanced Bionics Ag Systems and methods for detecting degradation of a microphone included in an auditory prosthesis system
EP3024538A1 (fr) 2013-07-23 2016-06-01 Advanced Bionics AG Système pour détecter une dégradation de microphone comportant un moyen de classification de signal et son procédé d'utilisation
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CN113068110B (zh) * 2016-04-28 2023-03-28 霍尼韦尔国际公司 耳机系统故障检测
CN106028196B (zh) * 2016-07-11 2022-10-14 歌尔股份有限公司 一种耳机
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CN106340305B (zh) * 2016-11-04 2024-03-19 北京声智科技有限公司 自校准的远场语音交互设备及远场语音自校准方法
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EP3808102A1 (fr) 2018-06-15 2021-04-21 Widex A/S Procédé de test des performances d'un microphone d'un système d'aide auditive et système d'aide auditive
EP3895141B1 (fr) 2018-12-15 2024-01-24 Starkey Laboratories, Inc. Système d'aide auditive avec caractéristiques de détection de chute améliorées
US11638563B2 (en) 2018-12-27 2023-05-02 Starkey Laboratories, Inc. Predictive fall event management system and method of using same
EP3706441B1 (fr) * 2019-03-07 2025-01-22 Oticon A/s Dispositif auditif comprenant un détecteur de configuration de capteur
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EP4005241B1 (fr) 2019-07-31 2024-08-21 Starkey Laboratories, Inc. Dispositif électronique porté sur l'oreille incorporant un système et procédé de réduction de défaut de microphone
CN110856080A (zh) * 2019-12-13 2020-02-28 中科海微(北京)科技有限公司 一种全自动智能麦克风切换系统及装置
EP4054207A1 (fr) * 2021-03-05 2022-09-07 Sonova AG Procédé de détection d'un dysfonctionnement d'un instrument auditif et instrument auditif
EP4075829B1 (fr) * 2021-04-15 2024-03-06 Oticon A/s Dispositif ou système auditif comprenant une interface de communication
CN114630235B (zh) * 2022-01-26 2023-12-15 惠州华阳通用电子有限公司 一种通话语音采集系统及其控制方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2373065B1 (fr) 2010-03-17 2016-01-13 Sivantos Pte. Ltd. Dispositif auditif et procédé de production d'une caractéristique de direction omnidirectionnelle
EP2373065B2 (fr) † 2010-03-17 2018-10-03 Sivantos Pte. Ltd. Dispositif auditif et procédé de production d'une caractéristique de direction omnidirectionnelle

Also Published As

Publication number Publication date
DK2200346T3 (da) 2018-11-26
EP2200346A3 (fr) 2013-06-19
CN101765048A (zh) 2010-06-30
DE102008064430A1 (de) 2010-07-08
CN101765048B (zh) 2015-12-16
US20100189292A1 (en) 2010-07-29
EP2200346B1 (fr) 2018-08-01
US8442245B2 (en) 2013-05-14
DE102008064430B4 (de) 2012-06-21

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