EP2635047A2 - Procédé d'adaptation d'un dispositif auditif à l'aide de la mémoire sensorielle - Google Patents

Procédé d'adaptation d'un dispositif auditif à l'aide de la mémoire sensorielle Download PDF

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Publication number
EP2635047A2
EP2635047A2 EP13157361.0A EP13157361A EP2635047A2 EP 2635047 A2 EP2635047 A2 EP 2635047A2 EP 13157361 A EP13157361 A EP 13157361A EP 2635047 A2 EP2635047 A2 EP 2635047A2
Authority
EP
European Patent Office
Prior art keywords
test
test result
tone
hearing device
user
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Withdrawn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
EP13157361.0A
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German (de)
English (en)
Other versions
EP2635047A3 (fr
Inventor
Maja Serman
Ronny Hannemann
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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Filing date
Publication date
Application filed by Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2635047A2 publication Critical patent/EP2635047A2/fr
Publication of EP2635047A3 publication Critical patent/EP2635047A3/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Withdrawn legal-status Critical Current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; 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
    • H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power
    • 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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting
    • 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
    • H04R2225/81—Aspects of electrical fitting of hearing aids related to problems arising from the emotional state of a hearing aid user, e.g. nervousness or unwillingness during fitting
    • 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
    • H04R25/552—Binaural
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]

Definitions

  • 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 (ITE), e.g. Concha hearing aids or canal hearing aids (ITE, CIC).
  • BTE behind-the-ear hearing aids
  • RIC hearing aid with external receiver
  • ITE in-the-ear hearing aids
  • ITE in-the-ear hearing aids
  • ITE in-the-ear hearing aids
  • ITE concha hearing aids or 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.
  • the human auditory system includes cochlear processing on the input side and extends to higher processing in the auditory cortex.
  • Hearing loss affects the auditory system as a whole regardless of the origin of the hearing defect.
  • hearing damage can be caused by damage to the cochlea, the auditory nerve or the cortical system.
  • the success and benefit of hearing aid fitting depends on the setting of the hearing aid according to the individual condition of the damage within the auditory system.
  • cochlear malfunctions are considered when fitting hearing aids.
  • appropriate audiograms are recorded.
  • higher level auditing processes are not taken into account when making an adjustment, and in particular an initial adjustment.
  • a method for controlling the adaptation of a hearing aid is known.
  • a test signal is generated by means of a signal source and the perception of the test signal is evaluated by the hearing device wearer.
  • the test signal is a natural or nature-like speech element which is spectrally filtered or selected in such a way that the spectrum of the test signal corresponds to the spectral range of at least one filter of the filter bank of the hearing aid.
  • the object of the present invention is to be able to better adapt a hearing device to individual needs.
  • an adaptation device for adapting a hearing device comprising a test device for testing the auditory sensory memory of a user of the hearing device, wherein at least one test result is obtained, and an adjustment device for adjusting the hearing device in dependence on the at least one test result are provided.
  • the auditory sensory memory is thus taken into account for the adaptation of a hearing device.
  • changes in the pitch, changes in the volume, changes in timbre, changes in the phase structure and changes in the duration of sound when adjusting a hearing device can be taken into account.
  • a part of the auditory system is taken into account, which is systematically located between the input stage of the cochlea and the output stage of the hearing aid Processing in the auditory cortex.
  • the sensory memory is used for the adaptation.
  • a reminder of an interaural time difference and / or level difference is examined.
  • the sensitivity to changes in phase and level can be examined. Loss of this sensitivity can affect speech intelligibility, localization, and perceived timbre.
  • a binaural first tone of two single tones one for the left and one for the right ear
  • a binaural second tone of two individual tones with a second Interaural time difference or level difference are presented to the user
  • the user from its sensory memory or memory provides an indication of the time difference or level difference in the first tone and in the second tone
  • the test result is obtained from the indication. It is thus registered whether or how easily the user can perceive a phase or level difference and then reproduce this perception in any way.
  • the user can make appropriate gestures or press appropriate buttons.
  • At least one additional tone of two single tones with a third interaural time difference or level difference can be presented to the user in the first step, the user then also provides in the second step an additional indication of the time difference or level difference in the additional tone , and in the third step, the additional result is taken into account for the test result.
  • the user is thus here each a chain of three, four or more signals or tones He then has to press, for example, three times, four times, etc. corresponding buttons.
  • the first interaural time difference or level difference may correspond to the second and / or third. Ie. Any test pattern of the time differences or level differences can be selected.
  • a directionality and / or a binaural signal processing of the hearing device can be set.
  • Sensitivity of hearing in terms of directionality and binaural processing is related to sensory memory in terms of time differences and level differences.
  • the parameter "interaural time difference and / or level difference” the parameter "pitch”, “phase”, “timbre” or “volume” or even a combination of the mentioned parameters as well as a dynamic change of one or more of said parameters can be tested.
  • the tones are monaural, or any binaural tone has the same Single tones for the left and right ear. This means that the individual test steps shown above are performed with respect to, for example, the parameter "pitch” or "phase”.
  • the sensory memory or the sensory memory can be tested not only in terms of interaural time difference or level difference, but also in terms of changes in pitch, phase, timbre or volume, possibly also other parameters.
  • a memory test is performed on the pitch parameter, d. H. the memory ability with respect to a pitch change, so it can be used to set a frequency compression, a sound balance, a music program or a feedback suppression of the hearing aid.
  • the test result may set, for example, a music program, a directionality or a sound balance, since the phase change memory affects these parameters of the hearing aid.
  • the test may refer to the parameter "timbre".
  • test may refer to the parameter "volume”.
  • compression or amplification of the hearing aid should be adjusted based on the test result obtained.
  • a basic idea of the present invention is that the auditory system is essentially divided into three parts. At the entrance is the ear and at the end is the signal processing in the auditory cortex. In between is sensory memory. Figuratively speaking, one could associate the sensory memory with the auditory nerve.
  • the present invention is now based on the idea that the sensory memory or sensory memory, even before signal processing in the auditory cortex, affects the perception. This, too, would have to be taken into account for the adaptation of a hearing device or a hearing device.
  • test method is proposed here, which should allow such an estimate in order to be able to set a hearing aid according to the test results or the estimate.
  • the test can be implemented by software and hardware.
  • the discrimination test it is first determined whether the subject can distinguish two different signals at all.
  • the goal here is not to determine the JND (Just Noticeable Difference). Rather, it is the goal to find signals that the subject can safely distinguish. These signals, which must be differentiated, then form the basis for the subsequent memory test. After listening to two different signals, the test person must press one of two buttons, one of which stands for "the same” and the other for "different”. If necessary, the user can also make these statements with gestures or verbal.
  • the memory test serves to determine whether and, if so, how easily a subject can remember signal changes.
  • the memory test can be performed using the Two-Forced Choice (AFC) method or any other method, such as an alternative procedure. Serial Order Recall or the Three-AFC Oddity Task Test. These tests are described below. The success of these tests depends heavily on the specific choice of parameters, as shown in the examples below.
  • AFC Two-Forced Choice
  • test phase is changed (so-called "roving"). For example, the interaural time difference is changed every test run.
  • the subject receives no feedback from the experimenter about his statements. This avoids learning.
  • the memory test then provides test results that can be used for hearing aid fitting or hearing aid setting.
  • the memory test provides two different diagnoses of sensitivity against changes (ie via the sensory memory).
  • the range of sensory memory can be determined, ie the number of different tones that the subject can remember.
  • the performance of the sensory memory for example, for the localization can be concluded.
  • the memory test provides a statement about the processing speed or capacity of sensation memory. Based on the ease with which a certain number of elements can be noted, one can infer the ability of auditory processing for a particular task (eg, localization). The ease with which the subject can memorize the different signals results from the number of errors in the test. Statements about ease can also be made about the overall speed of the test.
  • ITD Interaural Time Difference
  • ILD Interaural Level Difference
  • the test is performed by a sequence of two binaural signals according to FIG. 2 performed: a first signal A and a second signal B.
  • a sequence of signals can also be referred to as a chain.
  • Each binaural signal A, B has four different binaural tones 10.
  • a binaural sound means a single tone for the left ear and a single tone for the right ear, with both single tones differ by the interaural time or level difference.
  • the subject therefore listens to the chain A - B and then has to distinguish whether the signal A is equal to the signal B or different.
  • the subject always uses the same interface. For example, as already indicated above, he always uses the two buttons "same" and "different” to make his statements.
  • the first, the third and the fourth tone in the two signals A and B are the same.
  • the second tone is shifted upwards in the signal B with respect to the signal A by ⁇ ITD. If the subject can register the difference of the two signals A, B and remember, he presses the button "different".
  • the binaural first signal A consists of a fundamental frequency and its first n harmonics (hereinafter referred to as tone 10).
  • the first signal has an ITD of zero here.
  • the next string consists of the binaural first signal A followed by the binaural second signal B of the same tone, but the ITD is enlarged or reduced (e.g. B. a multiple of the original ITD).
  • the procedure of changing the difference between the first and the second signal is repeated in successive chains until the test person no longer recognizes that the first signal A and the second signal B are no longer different.
  • the same chains are repeated several times, and the subject must not have recognized at a given number of repetitions that the two signals are different. This predetermined number of repetitions can be, for example, 1, 3, 5 or 10. It will be determined before the test.
  • an ITD is set between two tones that the subject needs to know for certain that the two tones come from different directions (which results from the time difference).
  • the second signal consists either of an exact repetition of the first signal A or of a change in the ITD (direction) of one of the tones of the first signal A. After the test person has heard the chain, he must repeat the tone sequence or make a corresponding statement in which he presses, for example, the "equal” button or the “different” button.
  • the subject must thus provide the correct answer for a predetermined number of chains before the test jumps to the next level.
  • the increase of the element or tone number for a signal is variable. For example, can the increase be one or three tones, e.g. From two to three or from two to five, depending on the level of difficulty desired.
  • the second signal B is either the exact repetition of the first signal A or a changed first signal. The subject responds again by pressing the appropriate keys. This too is repeated for a certain number of chains. Then the test jumps to the next level, etc.
  • the test stops at a level when the subject is no longer able to perceive a change (or non-change) between the first signal and the second signal for a specified number of strings.
  • the start signal of the first signal in each chain is randomly changed (roving). Also the position of the change in a signal should be changed. This is due to the phenomenon of informational masking.
  • the task of recognizing a change in a melodic pattern can be made more or less difficult. This can be done, for example, by increasing the number of elements or tones in a signal (melodic pattern). It can also be done by changing the pattern (priority and novelty effects: the changes of either the first or the last element are most easily recognizable, etc.).
  • the subject can choose to have one change or several changes in the melodic pattern (signal) and with respect to which element. Preferably, only one element is changed, namely the last or penultimate element. If the test is to be more difficult, the change position may change in one level or even within a chain.
  • FIG. 3 a second type of memory test is shown symbolically. This test is based on motor reproduction and can also be called a "serial recall" (serial recall). Again, a multi-tone signal 10 is reproduced. Depending on the purpose of the test, the sounds as above, for example, consist of binaural tones with different ITD or ILD. But it can also be tested different pitches, so that as in the example of FIG. 3 the frequency f changes between monaural tones. In any case, the subject must press the two buttons 11, 12 according to the tone sequence. In the present example, he first has to press the button 11, then the button 12 and then again the button 11 twice. As a result, he has given a subjective indication of the heard tone sequence. Even so, the sensory memory can be tested.
  • FIG. 4 Another possibility of the memory test is according to FIG. 4 in that three signals A, B and X are presented in succession, each signal having several tones 10 (four tones per signal in the present case). Two of the signals are the same and one may be different from the other signals (again different pitches). The subject must recognize this different signal and make an appropriate statement.
  • the second tone was shifted 10 upwards by ⁇ f. Ie. his pitch has been increased. This can be analogously transferred to the interaural level difference or the interaural time difference, namely, the sounds are presented binaurally and the second tone receives a different interaule level or time difference.
  • one of the tones may also change another parameter, such as the timbre, the tonal sharpness, the loudness, and the like.
  • the applicability to other parameters than the frequency f shown in each case can also be applied to the test according to the FIG. 3 transfer.
  • another parameter such as pitch, timbre, etc., are changed.
  • loudness change Another parameter that is also interesting in terms of sensory memory is the loudness change. Loss of sensitivity to loudness change can negatively affect speech intelligibility (vocal contours), individual dynamic range, and consequently, the choice of compression parameters and amplification of the hearing aid. Conversely, this means that the results of a memory test regarding loudness changes can affect different setting parameters of the hearing aid. These include, in particular, the compression strength as a function of the dynamic range (perceived loudness fluctuations), the choice of the compression time constant (necessity of a certain flexibility with respect to loudness fluctuations), volume control, the learning of volume characteristics and the MPO adaptation (Maximum Pressure Out).
  • the memory test can also be used with respect to the sensation of tone color changes.
  • the loss of timbre sensitivity also has an impact on speech intelligibility (vocal formants), perception of higher frequencies and, consequently, on sound quality Choice of amplification of the hearing aid. Accordingly, the following hearing aid parameters are affected: sound balance control, amplification at higher frequencies (sensitivity to sound clarity), learning of sound balance characteristics, sound acuity, HIFI characteristics, frequency compression, frequency range of the hearing aid and constant gain.
  • the timbre is changed instead of the interaural time difference or the interaural level difference. The subject must remember the timbre change as he makes his statements out of memory.
  • test results from this hearing aid fitting test may be related to: musical program settings, speech intelligibility, directionality, and sound balance control including their learning.
  • the above test can also be used to analyze the sensory memory for changes in tone. For example, an overtone is added to the fundamental frequency and existing harmonics, or one of the existing harmonics is removed.
  • the loss of this sensitivity also has an effect on speech intelligibility (vocal contours), perception of music and overall frequency shaping of the hearing aid. Therefore, the test results can be used to adjust the following features on the hearing aid: frequency compression (flexibility in terms of tone changes needed), sound balance (differentiation of sounds needed), choice of music program (yes or no), parameterization of the sound Feedback suppression (tone shift sensitivity) and constant gain.

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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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP13157361.0A 2012-03-02 2013-03-01 Procédé d'adaptation d'un dispositif auditif à l'aide de la mémoire sensorielle Withdrawn EP2635047A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012203349.1A DE102012203349B4 (de) 2012-03-02 2012-03-02 Verfahren zum Anpassen einer Hörvorrichtung anhand des Sensory Memory und Anpassvorrichtung

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EP2635047A2 true EP2635047A2 (fr) 2013-09-04
EP2635047A3 EP2635047A3 (fr) 2017-07-26

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US (1) US9686620B2 (fr)
EP (1) EP2635047A3 (fr)
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Publication number Priority date Publication date Assignee Title
WO2015090352A1 (fr) * 2013-12-16 2015-06-25 Phonak Ag Procédé et appareil de placement d'une prothèse auditive
US10183164B2 (en) 2015-08-27 2019-01-22 Cochlear Limited Stimulation parameter optimization
US9937346B2 (en) 2016-04-26 2018-04-10 Cochlear Limited Downshifting of output in a sense prosthesis
US10757517B2 (en) * 2016-12-19 2020-08-25 Soundperience GmbH Hearing assist device fitting method, system, algorithm, software, performance testing and training

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032238A1 (de) 2008-12-30 2010-07-08 Forschungsgesellschaft für Arbeitsphysiologie und Arbeitsschutz e.V. Verfahren zur Kontrolle der Anpassung eines Hörgerätes
US20100196861A1 (en) 2008-12-22 2010-08-05 Oticon A/S Method of operating a hearing instrument based on an estimation of present cognitive load of a user and a hearing aid system

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US5825894A (en) * 1994-08-17 1998-10-20 Decibel Instruments, Inc. Spatialization for hearing evaluation
US6916291B2 (en) * 2001-02-07 2005-07-12 East Carolina University Systems, methods and products for diagnostic hearing assessments distributed via the use of a computer network
WO2010078938A2 (fr) 2008-12-18 2010-07-15 Forschungsgesellschaft Für Arbeitsphysiologie Und Arbeitsschutz E. V. Procédé et dispositif de traitement de signaux acoustiques vocaux

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100196861A1 (en) 2008-12-22 2010-08-05 Oticon A/S Method of operating a hearing instrument based on an estimation of present cognitive load of a user and a hearing aid system
DE102009032238A1 (de) 2008-12-30 2010-07-08 Forschungsgesellschaft für Arbeitsphysiologie und Arbeitsschutz e.V. Verfahren zur Kontrolle der Anpassung eines Hörgerätes

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US9686620B2 (en) 2017-06-20
DE102012203349A1 (de) 2013-09-05
DE102012203349B4 (de) 2017-11-09
EP2635047A3 (fr) 2017-07-26
US20130230182A1 (en) 2013-09-05

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