EP1290914A2 - Procede pour adapter un appareil auditif a un individu - Google Patents

Procede pour adapter un appareil auditif a un individu

Info

Publication number
EP1290914A2
EP1290914A2 EP01916843A EP01916843A EP1290914A2 EP 1290914 A2 EP1290914 A2 EP 1290914A2 EP 01916843 A EP01916843 A EP 01916843A EP 01916843 A EP01916843 A EP 01916843A EP 1290914 A2 EP1290914 A2 EP 1290914A2
Authority
EP
European Patent Office
Prior art keywords
loudness
function
individual
hearing
determined
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
EP01916843A
Other languages
German (de)
English (en)
Other versions
EP1290914B1 (fr
Inventor
Volker KÜHNEL
Andreas Von Buol
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.)
Sonova Holding AG
Original Assignee
Phonak AG
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 Phonak AG filed Critical Phonak AG
Publication of EP1290914A2 publication Critical patent/EP1290914A2/fr
Application granted granted Critical
Publication of EP1290914B1 publication Critical patent/EP1290914B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04R25/35—Electric hearing aids using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • 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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Definitions

  • the present invention relates to a method for adapting a hearing aid to an individual.
  • a method for adapting a hearing aid to an individual is known from the laid-open specification of the European patent application with the number EP-A2-0 661 905.
  • the known method relates to the correction of an individual, damaged psycho-acoustic perception by setting parameters in a hearing aid.
  • the statistically determined average perception of people with normal hearing is used as the target function for the correction.
  • the standard loudness function used as the target function is determined on a collective of people with normal hearing, this standard loudness function being determined as far as possible using the same procedure as the actual individual measurement.
  • the present invention is therefore based on the object of specifying a method in which settings are made on the hearing aid which enable improved adaptation of hearing aids to the loudness perception of the individual.
  • the invention has the following advantages: In that both the individual perception and the statistical norm perception of the hearing impaired in
  • Dependency of the hearing loss and the standard perception of normal hearing are taken into account when determining the settings of a hearing aid, and weighted according to data reliability, an optimal target function for the setting of the hearing aid is obtained for the individual, which also improves the hearing ability of the individual is.
  • the invention has succeeded in obtaining an optimal target loudness, which takes into account the individual perception of loudness.
  • Fig. 1 schematically, a quantification unit for
  • Fig. 3 shows the slope of the loudness function as a function of hearing loss (HVLS function) for a hearing impaired individual and
  • HVLO function Hearing loss
  • an individual and therefore better setting of hearing aids is made possible by taking into account both variations due to inaccurate measurements and variations due to different individual loudness sensations when adjusting the hearing aids, both the individually determined parameters and the standard loudness perception is weighted and contributes to determining the optimal adaptation.
  • the term "optimal adaptation" here means in particular a balanced course for the compression to be set and the one to be set Gain, that is, the input / output behavior of a hearing aid as a function of frequency.
  • this is achieved in particular by representing the individual slopes of the individual scaling results as a function of the hearing loss and by an individual HVLS function, i.e. the slope of the loudness function as a function of the hearing loss HV can be approximated.
  • a factor can be determined from the individual HVLS function in comparison to the hearing impaired standard HVLS function, which describes the loudness sensitivity of the individual in comparison to the norm.
  • this is achieved by displaying the individual levels LO of the individual scaling results as a function of the hearing loss and by an individual HVLO function, i.e. the level for loudness 0 as a function of hearing loss HV, can be approximated. From the individual HVLO function, compared to the
  • an offset can be determined which describes the mean difference in the abscissa section of the loudness functions of the individual in comparison to the standard.
  • an audiogram is created. This is done by measuring the hearing thresholds for pure tones of different frequencies in a potential hearing device wearer. The measured increases in hearing thresholds are expressed and displayed as hearing loss in dB at each frequency or at certain frequency intervals. The audiogram can be used to determine in which hearing area there is a hearing loss. Furthermore Support points - ie individual frequencies - are determined on the basis of the audiogram, in which loudness scales are subsequently carried out in the manner described below.
  • the loudness "L” is a psycho-acoustic quantity, which indicates how “loud” an individual feels a presented acoustic signal.
  • loudness is one of the most important psycho-acoustic variables that determine acoustic perception.
  • FIG. 1 One possibility of capturing the individually perceived loudness on selected acoustic signals as a further usable variable is the one shown schematically in FIG. 1, for example from O. Heller, "Auditory field audiometry using the method of category division", Psychological Contributions 26, 1985 , or V. Hohmann, "Dynamic Compression for Hearing Aids, Psychoacoustic Fundamentals and Algorithms", thesis UNI Göttingen, VDI-Verlag, series 17, No. 93, or Thomas Brand, Analysis and optimization of psychophysical procedures in audiology Oldenburg: Library and Information System of the Univ., 2000. - 148 S. Oldenburg, Diss. , Univ., 1999. ISBN 3-8142-0721-1, known method.
  • an individual I is presented with an acoustic signal A, which is adjustable on a generator 1 with respect to the spectral composition and the transmitted sound pressure level.
  • the individual I evaluates or "categorizes" the currently heard acoustic signal A according to e.g. B. eleven loudness levels or categories, as shown in Fig. 1. Numerical weights, for example from 0 to 10, are assigned to the levels.
  • this procedure it is possible to measure the perceived individual loudness, i. H. to quantify.
  • this is carried out at at least one, preferably at three different frequencies or support points. This procedure is referred to below as loudness scaling.
  • model parameter ⁇ corresponds to a non-linear amplification, approximately the same for normal hearing people in every critical frequency band, but for individuals with hearing loss , with ⁇ kI , to be described at every frequency or in every frequency band voices. Due to the straight line with the slope ⁇ kI , the non-linear loudness function at the frequency f k is approximated by a regression line.
  • L kI typically denotes the course of the loudness L j of a hearing impaired person at a frequency f k .
  • the curve of a hearing impaired person has a larger offset (L 0 ) to the zero point and is steeper than the curve of the norm.
  • the larger offset corresponds to an increased hearing threshold
  • the phenomenon of the fundamentally steeper loudness curve is referred to as loudness recruitment and corresponds to an increased ⁇ parameter.
  • such loudness scales are carried out at at least one, preferably at three support points - ie at one or more different frequencies.
  • a so-called HVLS function is determined by plotting the slopes of the loudness function ⁇ 1 # ⁇ 2 , ⁇ 3 , ... as a function of the hearing loss HV in dB.
  • FIG. 3 shows an HVLS function for a hearing-impaired individual, the individual HVLS function, dashed line, being determined by three support points using a suitable modeling described below.
  • HV hearing loss in dB
  • a a , b a constant function parameters
  • VP consta individual function parameter that adapts the HVLS function to the support points ⁇ 1 # ⁇ 2 , ⁇ 3 , ...
  • a preferred way to take into account the norm Loudness function consists in forming an average between the individual slope ⁇ determined by measurement and extrapolation at 0 dB hearing loss and the standard loudness slope, with a weighting corresponding to an expected spread of the values, both for the individual slope ⁇ at 0 dB hearing loss as well as with the standard loudness gradient. Weighting the individual scaling data as a function of both the quality of the individual scaling data and the number of measuring points for the individual scalings and the number of scalings carried out has proven to be advantageous. For individual scaling data of average quality in three frequencies, a weighting of the individual slope ⁇ at 0 dB hearing loss with a
  • the abscissa sections L 0 of the loudness function in connection with the hearing loss determined in the audiogram derive an optimal band-specific amplification.
  • loudness scales are carried out at at least one, preferably at three support points, ie at one or more different frequencies.
  • the HVLO function is determined by plotting the abscissa sections of the loudness function L 01 , L 02 , L 03 , ... as a function of the hearing loss HV in dB.
  • Figure 4 shows an HVLO function for a hearing impaired individual, using the individual HVLO function, dashed line, through three support points a suitable model formation, explained below, is determined.
  • HV hearing loss in dB
  • a L , b L constant function parameters
  • VP constL individual function parameters which send the HVLO function to the support points L 01 , L 02 , L 03 , ... adjusts
  • the HVLO function shown in FIG. 4 due to its calculation from several support points, has less measurement-related scatter than the individual support points, and thus better reflects changes in individual perception.
  • the target function for setting the hearing aid could already be obtained based on this individual HVLO function, the level L 0 at 0 dB hearing loss determined by extrapolation (dotted curve in FIG. 3) and the hearing aid set accordingly. It has been shown that the hearing aid setting can be significantly improved if, analogously to the gradient ⁇ Loudness function Information about healthy hearing is taken into account. It is proposed according to the invention that the standard loudness perception is used to determine the individually required compression with 0 dB hearing loss. According to the invention, the fact is taken into account that the loudness perception of people with normal hearing themselves has a non-negligible dispersion.
  • a preferred possibility for taking the standard loudness function into account is that a weighted mean value is formed between the individual level L 0 determined by measurement and extrapolation at 0 dB hearing loss and the level Norm-L 0 , with a weighting corresponding to an expected spread of the Values, both at the individual level L 0 at 0 dB hearing loss and at the level Norm-L 0 .
  • a weighting of the individual scaling data as a function of both the quality of the individual scaling data and the number of measuring points for the individual scalings and the number of scalings carried out has also proven advantageous for the level L 0 .
  • an extremely good adjustment of the hearing aid can be achieved with a weighting of the individual level L 0 at 0 dB hearing loss with a factor 1/3 and a weighting of the level Norm-L 0 with a factor 2/3 ,

Landscapes

  • 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)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

L'invention concerne un procédé pour adapter un appareil auditif à un individu. Ce procédé consiste tout d'abord à mesurer et à quantifier par des paramètres la perception du volume sonore par un individu et à la pondérer avec un premier facteur. En outre, un comportement auditif normal et ses paramètres sont pondérés avec un deuxième facteur. Enfin, les comportements auditifs et leurs paramètres pondérés sont utilisés afin de déterminer les réglages de l'appareil auditif qui sont optimaux pour l'individu. Ce procédé présente l'avantage de permettre d'adapter un appareil auditif à un individu de manière considérablement améliorée.
EP01916843A 2001-04-10 2001-04-10 Procede pour adapter un appareil auditif a un individu Expired - Lifetime EP1290914B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/829,700 US7194100B2 (en) 2001-04-10 2001-04-10 Method for individualizing a hearing aid
PCT/CH2001/000232 WO2001049068A2 (fr) 2001-04-10 2001-04-10 Procede pour adapter un appareil auditif a un individu

Publications (2)

Publication Number Publication Date
EP1290914A2 true EP1290914A2 (fr) 2003-03-12
EP1290914B1 EP1290914B1 (fr) 2004-05-26

Family

ID=25705677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01916843A Expired - Lifetime EP1290914B1 (fr) 2001-04-10 2001-04-10 Procede pour adapter un appareil auditif a un individu

Country Status (7)

Country Link
US (1) US7194100B2 (fr)
EP (1) EP1290914B1 (fr)
AU (1) AU2001244029A1 (fr)
CA (1) CA2409838A1 (fr)
DE (1) DE50102419D1 (fr)
DK (1) DK1290914T3 (fr)
WO (1) WO2001049068A2 (fr)

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US7922671B2 (en) * 2002-01-30 2011-04-12 Natus Medical Incorporated Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids
US7020581B2 (en) * 2002-10-18 2006-03-28 Medacoustics Research & Technology Medical hearing aid analysis system
MXPA05012785A (es) * 2003-05-28 2006-02-22 Dolby Lab Licensing Corp Metodo, aparato y programa de computadora para el calculo y ajuste de la sonoridad percibida de una senal de audio.
US7435228B2 (en) * 2003-07-18 2008-10-14 Harris Corporation High fidelity hearing restoration
US7756276B2 (en) * 2003-08-20 2010-07-13 Phonak Ag Audio amplification apparatus
AU2004201374B2 (en) * 2004-04-01 2010-12-23 Phonak Ag Audio amplification apparatus
MX2007005027A (es) 2004-10-26 2007-06-19 Dolby Lab Licensing Corp Calculo y ajuste de la sonoridad percibida y/o el balance espectral percibido de una senal de audio.
US8199933B2 (en) 2004-10-26 2012-06-12 Dolby Laboratories Licensing Corporation Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
EP2363421B1 (fr) * 2005-04-18 2013-09-18 Basf Se Copolymères CP pour la préparation de compositions comprenant au moins un fongicide du groupe des conazoles
US7890377B2 (en) * 2005-10-31 2011-02-15 Phonak Ag Method for producing an order and ordering apparatus
KR100842618B1 (ko) * 2005-11-01 2008-06-30 삼성전자주식회사 음악 파일 재생 방법 및 장치
TWI517562B (zh) 2006-04-04 2016-01-11 杜比實驗室特許公司 用於將多聲道音訊信號之全面感知響度縮放一期望量的方法、裝置及電腦程式
EP2002426B1 (fr) * 2006-04-04 2009-09-02 Dolby Laboratories Licensing Corporation Mesure et modification de la sonie d'un signal audio dans le domaine mdct
RU2417514C2 (ru) 2006-04-27 2011-04-27 Долби Лэборетериз Лайсенсинг Корпорейшн Регулировка усиления звука с использованием основанного на конкретной громкости обнаружения акустических событий
CN101529721B (zh) 2006-10-20 2012-05-23 杜比实验室特许公司 使用复位的音频动态处理
US8521314B2 (en) * 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
JP5192544B2 (ja) * 2007-07-13 2013-05-08 ドルビー ラボラトリーズ ライセンシング コーポレイション 聴覚情景分析とスペクトルの歪みを用いた音響処理
DE102007035174B4 (de) 2007-07-27 2014-12-04 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung gesteuert durch ein perzeptives Modell und entsprechendes Verfahren
DE102007035172A1 (de) 2007-07-27 2009-02-05 Siemens Medical Instruments Pte. Ltd. Hörsystem mit visualisierter psychoakustischer Größe und entsprechendes Verfahren
KR101597375B1 (ko) * 2007-12-21 2016-02-24 디티에스 엘엘씨 오디오 신호의 인지된 음량을 조절하기 위한 시스템
DE102008019374A1 (de) 2008-04-17 2009-10-22 Siemens Medical Instruments Pte. Ltd. Verfahren zur Bestimmung einer Zeitkonstante des Gehörs und Verfahren zum Einstellen einer Hörvorrichtung
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Also Published As

Publication number Publication date
US7194100B2 (en) 2007-03-20
DE50102419D1 (de) 2004-07-01
CA2409838A1 (fr) 2002-11-19
AU2001244029A1 (en) 2001-07-09
DK1290914T3 (da) 2004-09-27
WO2001049068A3 (fr) 2002-09-12
US20020146137A1 (en) 2002-10-10
EP1290914B1 (fr) 2004-05-26
WO2001049068A2 (fr) 2001-07-05

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