EP2654321B1 - Procédé destiné au fonctionnement d'un dispositif auditif - Google Patents

Procédé destiné au fonctionnement d'un dispositif auditif Download PDF

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Publication number
EP2654321B1
EP2654321B1 EP13158959.0A EP13158959A EP2654321B1 EP 2654321 B1 EP2654321 B1 EP 2654321B1 EP 13158959 A EP13158959 A EP 13158959A EP 2654321 B1 EP2654321 B1 EP 2654321B1
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EP
European Patent Office
Prior art keywords
counter
value
operating parameter
filter
output
Prior art date
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Application number
EP13158959.0A
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German (de)
English (en)
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EP2654321A1 (fr
Inventor
Roland Barthel
Uwe Rass
Florian Steinke
Clemens Otte
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
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Sivantos Pte Ltd
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    • 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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • 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
    • H04R25/50—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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • 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
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically
    • 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
    • H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest
    • 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
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility

Definitions

  • the invention relates to a method for operating a hearing device, in which an operating parameter of the hearing device is determined and smoothed by means of a filter.
  • the invention further relates to a hearing device with a signal processing device, wherein at least one operating parameter of the signal processing device is adjustable and can be smoothed by a filter
  • a hearing device here means any device which can be worn in or on the ear and causes a hearing, 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 standard integrated into 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, one or more microphones 2 for receiving the sound from the environment are installed.
  • 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
  • the signal processing unit has operating parameters that are dependent on the microphone signals. For example, depending on a noise intensity, the intensity of noise filtering is varied or an additional directional microphone of a given strength is activated depending on an acoustic environment.
  • the WO 2004/075093 A2 describes a method for classifying music signals by means of a classifier and using a wavelet filter. In this case, a parameter set obtained by means of the wavelet filter is classified by the classifier and thus an allocation of the received music signal to a specific music direction is made possible.
  • the US 2010/0027820 A1 describes a method for classifying a background noise in environmental classes. For this purpose, values of a signal level in a histogram for a number of different frequency bands are used.
  • a method for recording operating parameters of a hearing device in which input data are classified according to their belonging to value ranges. For each input value, a counter assigned to the respective value range is incremented, so that a histogram is obtained which reflects the distribution of the input values.
  • a method according to the preamble of claim 1 and a hearing device according to the preamble of claim 8 are made EP 1 858 292 A1 known.
  • operating parameters of the hearing device are smoothed in the form of an activity parameter set by temporal averaging.
  • input parameters in the form of input audio signals of an acoustic environment are classified according to their membership in a plurality of classes.
  • a class similarity factor is determined that reflects the similarity of the acoustic environment to the given acoustic environment of the particular class.
  • the activity parameter set is predefined from a number of Basic parameter sets determined.
  • the activity parameter set is determined in particular by mixing the basic parameter sets.
  • the basic parameter set which is assigned to the class with the greatest similarity factor is selected as the activity parameter set.
  • time-averaged activity parameter sets are used to control functions of the hearing device to enable smooth changes in the transfer function of the hearing device.
  • each unsmoothed value-this input value is classified in accordance with its membership in a plurality of predetermined classes and an associated counter of the respective class to which the input value belongs is incremented.
  • the counter value of the counter can be incremented by one, but it is also possible to use other increments, which may vary from step to step.
  • the counter with the largest counter value is determined and an operating parameter value assigned to the counter with the largest counter value is output as the output variable of the filter.
  • the operating parameter value assigned to the counter with the largest counter value is output as the output variable only if the counter exceeds a predetermined threshold value. Otherwise, the last output operating parameter value is retained as output.
  • the choice of the threshold value essentially determines the window width of the smoothing algorithm.
  • the method is particularly suitable for smoothing operating parameters of the hearing device, which are already present in discretized form.
  • This may be, for example, the evaluation of the acoustic environment of the hearing device according to several discrete classes (conversation situation, background music and the like).
  • the method is also suitable for the treatment of non-discrete, real-valued operating parameters.
  • the classes are preferably represented by contiguous intervals over predefined, non-discrete value ranges in order to achieve a discretization in the first step of the method, which enables a particularly memory-efficient processing.
  • an input value in this variant of the method affects not only the counter of the class to which it belongs directly, but also the counters of adjacent classes. This leads to additional smoothing and improves the robustness of the algorithm.
  • each input value y i of the operating parameter the counter value v j of a class j of the classes, which is assigned an interval with the center b j by (1- ⁇ ) max (0,1- (
  • the invention further relates to a hearing device of the type mentioned above, whose signal processing device is designed to classify the input value according to its membership in a plurality of predetermined classes for smoothing the operating parameter for each input value and a counter associated with the respective class to which the input value belongs to increase, to determine the counter with the largest counter value and output an operating parameter value associated with the counter with the largest counter value as the output size of the filter.
  • a robust and memory-efficient smoothing of the operating parameters of the hearing device can be achieved in this way.
  • hearing devices must be adapted to the particular acoustic environment in which they are used.
  • different operating parameters of the hearing device can be adjusted depending on the environmental conditions. For example, the strength of a noise filtering can be changed, additional directional microphones with different sensitivity can be switched on and the like.
  • the operating parameters are determined in dependence on an acoustic input signal of the hearing device. ever Depending on the type of acoustic event, it can lead to strong, sudden fluctuations in the operating parameters, which affect hearing comfort. For this reason, it is necessary to smooth the timing of these operating parameters.
  • FIG. 2 schematically illustrated embodiment of a method according to the invention can be achieved.
  • Input data 10 for the smoothing filter are classified according to their membership in a plurality of classes 12. If an input value 10 falls in one of the classes 12, a counter associated with class 12 is incremented. If one of the counters exceeds a predetermined threshold value 14, the output value of the filter is output as output value assigned to the class 12 belonging to the counter and all counters are reset to zero. Otherwise, the previous output value is retained.
  • the signal processing device 3 therefore only has to provide storage space for the counters of the classes 12.
  • the storage space requirement is independent of the window width, which is determined by the choice of the threshold value 14.
  • the algorithm is robust against outliers and transient events and thus enables a reliable smoothing of already discretized input values 10.
  • the counters v j are modified in dependence on the current input value y i . This is done according to the function v j ⁇ j + ⁇ v (1- ⁇ ) max (0; 1 - (
  • the described method exhibits a smoothing behavior similar to that of the exponentially weighted moving average strongly resembles. With higher robustness against outliers, however, much less space is needed.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Circuit For Audible Band Transducer (AREA)

Claims (8)

  1. Procédé destiné au fonctionnement d'un dispositif auditif pouvant être porté dans ou sur l'oreille, pour lequel un paramètre de fonctionnement du dispositif auditif est déterminé, dans lequel le paramètre de fonctionnement est lissé au moyen d'un filtre, et dans lequel, lors d'une étape a), chaque valeur d'entrée du filtre devant être lissée est classée en fonction de son appartenance à une pluralité de classes prédéterminée,
    caractérisé en ce que
    - lors de l'étape a), un compteur associé à la classe à laquelle appartient la valeur d'entrée est incrémenté,
    - lors d'une étape b) suivante, le compteur ayant la valeur de compteur la plus élevée est déterminé, et
    - lors d'une étape c) suivante, une valeur du paramètre de fonctionnement associée au compteur ayant la valeur de compteur la plus élevée est fournie en sortie en tant que grandeur de sortie du filtre.
  2. Procédé selon la revendication 1,
    caractérisé en ce que, lors de l'étape c), la valeur du paramètre de fonctionnement associée au compteur ayant la valeur de compteur la plus élevée n'est pas fournie en sortie en tant que grandeur de sortie lorsque la valeur de compteur dépasse une valeur de seuil prédéterminée et en ce que, sinon, la valeur du paramètre de fonctionnement fournie en sortie en dernier est conservée en tant que grandeur de sortie.
  3. Procédé selon la revendication 2,
    caractérisé en ce que, lorsque la valeur de seuil est dépassée par l'une des valeurs de compteur lors de l'étape c), après la fourniture en sortie de la grandeur de sortie, toutes les valeurs de compteur sont mises à zéro.
  4. Procédé selon la revendication 1,
    caractérisé en ce que chacune des classes est un intervalle connexe sur une plage de valeurs non discrètes prédéterminée.
  5. Procédé selon la revendication 4,
    caractérisé en ce qu'avant l'incrémentation de la valeur de compteur effectuée lors de l'étape a), toutes les valeurs de compteur sont mises à l'échelle conformément à un facteur λ prédéterminé, avec 0 ≤ λ ≤ 1.
  6. Procédé selon la revendication 5,
    caractérisé en ce que, lors de l'étape a), toutes les valeurs de compteur sont incrémentées d'une quantité qui dépend d'une distance de la valeur d'entrée par rapport à un point médian de l'intervalle correspondant à la classe respective.
  7. Procédé selon la revendication 6,
    caractérisé en ce que, pour chaque valeur d'entrée yi du paramètre de fonctionnement, le compteur vj d'une classe j, parmi les classes, à laquelle est associé un intervalle ayant le point médian bj, est incrémenté de (1-λ)max(0,1-(|yi-bj|)/σ)) où σ représente un rayon d'influence prédéterminé.
  8. Dispositif auditif pouvant être porté dans ou sur l'oreille, comportant un dispositif de traitement du signal (3) muni d'un filtre, dans lequel au moins un paramètre de fonctionnement du dispositif de traitement du signal (3) peut être réglé, dans lequel le paramètre de fonctionnement peut être lissé par le filtre, et dans lequel le dispositif de traitement du signal (3) est conçu pour classer la valeur d'entrée en fonction de son appartenance à une pluralité de classes prédéterminées afin de lisser le paramètre de fonctionnement en premier lieu pour chaque valeur d'entrée du filtre devant être lissée,
    caractérisé en ce que le dispositif de traitement du signal (3) est conçu pour incrémenter un compteur associé à la classe respective à laquelle appartient la valeur d'entrée, puis pour déterminer le compteur ayant la valeur de compteur la plus élevée et enfin pour fournir en sortie une valeur du paramètre de fonctionnement associée à la valeur de compteur la plus élevée en tant que grandeur de sortie du filtre.
EP13158959.0A 2012-04-17 2013-03-13 Procédé destiné au fonctionnement d'un dispositif auditif Active EP2654321B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012206299.8A DE102012206299B4 (de) 2012-04-17 2012-04-17 Verfahren zum Betreiben einer Hörvorrichtung und Hörvorrichtung

Publications (2)

Publication Number Publication Date
EP2654321A1 EP2654321A1 (fr) 2013-10-23
EP2654321B1 true EP2654321B1 (fr) 2018-05-30

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EP13158959.0A Active EP2654321B1 (fr) 2012-04-17 2013-03-13 Procédé destiné au fonctionnement d'un dispositif auditif

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US (1) US8976989B2 (fr)
EP (1) EP2654321B1 (fr)
AU (1) AU2013202642B2 (fr)
DE (1) DE102012206299B4 (fr)
DK (1) DK2654321T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1858292A1 (fr) * 2006-05-16 2007-11-21 Phonak AG Prothèse auditive et procédé d'utilisation d'une prothèse auditive

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7091409B2 (en) 2003-02-14 2006-08-15 University Of Rochester Music feature extraction using wavelet coefficient histograms
US8948428B2 (en) * 2006-09-05 2015-02-03 Gn Resound A/S Hearing aid with histogram based sound environment classification
DK2191662T3 (da) * 2007-09-26 2011-09-05 Phonak Ag Høresystem med en brugerpræferencestyring og fremgangsmåde til brug af et høresystem
JP5031102B2 (ja) * 2007-11-29 2012-09-19 ヴェーデクス・アクティーセルスカプ 補聴器およびロギング装置の管理方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1858292A1 (fr) * 2006-05-16 2007-11-21 Phonak AG Prothèse auditive et procédé d'utilisation d'une prothèse auditive

Also Published As

Publication number Publication date
US8976989B2 (en) 2015-03-10
US20130272552A1 (en) 2013-10-17
EP2654321A1 (fr) 2013-10-23
DE102012206299B4 (de) 2017-11-02
DE102012206299A1 (de) 2013-10-17
AU2013202642A1 (en) 2013-10-31
AU2013202642B2 (en) 2015-01-22
DK2654321T3 (da) 2018-09-03

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