EP1205090A2 - Systeme d'adaptation pour appareil auditif - Google Patents

Systeme d'adaptation pour appareil auditif

Info

Publication number
EP1205090A2
EP1205090A2 EP99936227A EP99936227A EP1205090A2 EP 1205090 A2 EP1205090 A2 EP 1205090A2 EP 99936227 A EP99936227 A EP 99936227A EP 99936227 A EP99936227 A EP 99936227A EP 1205090 A2 EP1205090 A2 EP 1205090A2
Authority
EP
European Patent Office
Prior art keywords
unit
audio
input
output
hearing aid
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Withdrawn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
EP99936227A
Other languages
German (de)
English (en)
Inventor
Michael Greminger
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 EP1205090A2 publication Critical patent/EP1205090A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Definitions

  • the present invention relates to a hearing aid fitting device according to the preamble of claim 1.
  • Hearing aid technology is increasingly moving towards digitally processing audio signals.
  • a digital signal processor unit is used to transmit audio signals, ultimately to an electrical / mechanical output coupler of the hearing aid.
  • the transmission behavior of the hearing aid between the acoustic / electrical input transducer and the electrical / mechanical output transducer is created on the signal processor unit in such a way that individual hearing impairments are largely eliminated by the hearing aid.
  • the first rough tuning is usually carried out on the basis of diagnostic data, such as audio programs. On the basis of such data, a first adjustment of at least some of the transmission parameters is carried out on the hearing aid or the hearing aid type is even selected.
  • the vote is then carried out in situ.
  • an individual to whom one or two hearing aids are to be fitted is equipped with the hearing aids to be matched and test audio signals are exposed.
  • the individual was A hearing aid is applied to the static data, and the in-situ coordination is now further carried out on the basis of its diagnostic data and / or on the basis of assessments of the individual about his or her listening experience, that is to say listening impressions from his everyday environment.
  • the hearing aid acoustician prefferably selects a test signal suitable for checking the individual assessment from a plurality of test audio signals available, to present this to the individual with the hearing aid applied via loudspeakers and, after a new assessment by the individual, to vote at least one part makes the transmission parameters on the hearing aid.
  • the computing unit determines, among other things on the basis of a database, which transmission parameters on the hearing aid are to be changed and how.
  • Input units are used for this purpose, with simple keyboard fields that allow the individual to enter their assessment, for example on a scale. This input unit communicates directly with the adaptation computing unit.
  • Digital hearing aids are increasingly being adapted according to psycho-acoustic parameters, including loudness.
  • EP-A-0 661 905 in accordance with US application No. 08/720 748 by the same applicant as the present application. It explains, for example, how the psychoacoustic perception quantity "loudness" can be evaluated scaled by an individual and how a computing unit, according to the test signal response, sets transmission parameters on the hearing aid for the specific critical frequency bands of human hearing.
  • This procedure is described in detail in the document mentioned and is only of importance for the present invention in that it explains, for example, how an adaptation Computing unit, based on scaled loudness information from the individual, provides parameters of the transmission behavior on the hearing aid.
  • the present invention relates to a hearing aid fitting device of the above-mentioned type, primarily irrespective of how the assessment of the individual is transmitted to the device, directly or via the interpreting specialist knowledge of the specialist. Furthermore, it is irrelevant for the present invention in which way the fitting device is operatively connected to the hearing device (s), e.g. whether wired or wireless. Regardless of these system variants, the present invention addresses the problem that, with regard to the selection of the audio test signals presented to the individual, a high level of specialist knowledge of the person carrying out the adaptation is required and / or that the audio test signals mentioned are not optimally selected in accordance with the respective test situation. The object of the present invention is to remedy this problem.
  • the adaptation device comprises an audio storage medium playback unit, the control inputs of which are operatively connected to an output of the computing unit and the audio output of which are connected to a connection for a loudspeaker unit.
  • the fact that the intended audio storage medium playback unit is controlled by the computing unit makes it possible, in function of the respective assessment, and possibly also diagnostic data to optimally and automatically select the next audio test signal to be presented.
  • the audio storage medium playback unit can be any such unit, in particular also include one or more memory chips for audio signals or a CD-ROM unit, but is preferably implemented today by a unit that plays audio CDs.
  • a test unit which checks an audio storage medium for a predetermined identification and, if it is not recognized, blocks the playback unit and preferably outputs a display on a display unit.
  • the labeling mentioned can be of any type, for example in the form of a bar code. In particular, the type of labeling mentioned depends on which category the playback unit is from and which type of audio storage medium is played with it.
  • the temporal length information of at least one of the tracks on the CD is preferably fed from an output of the playback unit to a decoding unit of the computing unit, which has a control signal at its output, and according to the wording of claim 4 generated for the operation of the playback unit, as a function of the track time length specification.
  • length information of tracks on the audio CD that are not intended for the playback of test signals are preferably used, although time length information of tracks that also contain audio test signals can also be used for this.
  • time length information of tracks that also contain audio test signals is not critical. It can therefore be immaterial whether an audio test signal and thus the associated track lasts 13 seconds or 15 seconds, although the 2 seconds difference in the sense of the coding mentioned can define different playback modes.
  • the aforementioned time length coding is preferably only provided on the audio test signal track if there is certainty that the addressed audio track will also be played when the coded information is required.
  • track number 20 is thus defined with a length of 11 seconds.
  • the above-mentioned audio CD coding technique which is generally specified in claim 4, however, enables further information to be coded flexibly. To check speech intelligibility, it is possible to record speech on the same audio CD.
  • the tracks assigned to the respective languages are grouped into track groups.
  • the indication of how many track language groups are provided on an audio CD and how many tracks each Including groups is applied to the CD by consistently following the information coding by means of track time lengths, and is accordingly read out and interpreted.
  • a hearing device connected to the adapting device comprises a level detector which is operatively connected to the acoustic / electrical input converter of the hearing device.
  • the computing unit is operatively connected on the output side to an enable control input for the level detector, and the level detector is operatively connected on the output side to an input of the computing unit.
  • the computing unit thus controls when the output of the level detector is effectively connected to it.
  • the input of the computing unit, to which the level detector acts on the output side is operatively connected to a TARGET level comparison unit, which is used to detect whether the loudness value detected in situ on the hearing aid corresponds to a TARGET value.
  • the output of the level comparison unit is operatively connected to a level control input for the audio output of the playback unit, wherein the computing unit controls the playback unit to play a predetermined calibration memory sector and creates the operative connection from the level detector output to the computing unit.
  • a calibration audio signal is stored in the aforementioned, predetermined calibration storage sector of the storage medium, with respect to which the TARGET level or TARGET value compared with the instantaneous level value is also set. Since this sector, in the case of an audio CD a calibration track, is to be played in any case, it is also quite suitable as a track with the aforementioned coding in its length.
  • connection for the input unit on the adapting device is operatively connected to a selection unit on the computing unit, the output of which acts on a selection input on the playback unit at which the the next playable storage sector of the audio storage medium is selected or controlled. This basically creates the connection between the input unit and the audio test signal to be selected in each case.
  • the selection unit has a test signal / reaction pattern storage unit, preferably designed as a read-only unit.
  • a large number of different patterns of signals are pre-stored therein, which correspond to possible test signals, possible reaction signals or assessments - from the input unit - each of these test signals / reaction signal patterns defining a next test signal that is now to be activated.
  • the output of the above-mentioned memory unit is cyclically operatively connected to a comparison unit in a controlled manner.
  • the comparison unit determines which pattern of reactions or assessments with respect to the current test signal corresponds to the present reaction / test signal situation or at least best correlates it. If this pattern, which is one of the test signal / reaction signal pattern storage unit stored, is recognized, the fact that the output of the comparison unit acts on the output of the selection unit, the corresponding audio storage medium segment found to be optimal for this pattern Generation of the next test signal activated, according to claim 7.
  • test history memory units upstream of the connections of the comparison unit .
  • connection for the input unit is followed by a controlled decoder.
  • the decoding unit mentioned uses the decoding table to determine one or more situations on the output side which are determined by psychological Acoustic standard terms are defined and which, on the one hand, allow, in the sense of the present invention, automatic access to the audio test signals provided, but on the other hand also allow parameters to be set on the hearing aid.
  • the decoding is again based on empirical values.
  • the present invention further relates to a method for adapting a hearing aid according to the wording of claim 10 and an audio CD according to the wording of claim 11.
  • FIG. 1 shows an overview of a signal flow / function block diagram of the matching device according to the invention
  • FIG. 2 in the form of a simplified signal flow / function block diagram, a preferred selection technique for test signals on the device according to FIG. 1;
  • FIG. 3 in the form of a simplified signal flow / function block diagram, a further possibility of selecting a test signal to be played next in the procedure according to the invention according to FIG. 1;
  • FIG. 5 shows schematically the structure of an audio CD encoded according to the invention
  • the hearing aid adapter 1 comprises a computing unit 3, which acts on the output side on a connection A 3 for one or two hearing aids 7.
  • the computing unit 3 also has, on the input side, a connection E 3 for an input unit 5, be it a conventional input keyboard, be it a keyboard with a few scaling keys, be it a voice input unit, a mouse, a joystick ect.
  • the computing unit 3 is further operatively connected to control inputs E 9 of an audio storage medium playback unit 9, the audio output A 9 of which is connected to a loudspeaker unit 11 is operatively connected or operably connectable - via a connection A xl - by means of which 7 test signals T are transmitted to the hearing aid worn in situ.
  • the device shown in FIG. 1 basically works as follows:
  • the individual wearing the hearing aid 7 is exposed to a test signal T.
  • the reaction or assessment of the individual to the test signal T is fed via the input unit 5 to the computing unit 3 of the adaptation device 1 by direct manual input or by oral reporting to a specialist and subsequent input.
  • FIG. 2 shows a first embodiment variant of how, viewed in combination with FIG. 1, the playback unit 9 is controlled by the computing unit 3. It denotes H "manual entry”.
  • H “manual entry”.
  • a hearing aid acoustician will preferably convert the assessment into psycho-acoustic terms, such as loudness, speech intelligibility and sound quality, and enter the weights corresponding to the individual assessment, such as loudness " too high "etc., in terms of speech intelligibility” too shrill ", in terms of sound quality” too reverberant ".
  • the selection unit 8 assigns an assigned audio test signal T to each implemented assessment B1, B2 ... in accordance with the manual inputs. Since several assessments B can be optimally assigned one and the same audio test signal T and, in a further development of the invention, the test signals T can be assigned to B assessments based on logical combinations such as AND, OR etc., is preferably - and as in Fig.
  • a selection unit 8 is provided, on the one hand the assessment signals B are supplied and on the other hand - as shown schematically with H L0G - the logical link type can be entered, with which the assessment inputs B are to be linked and which on the output side Trigger the optimal test signal T for the assessment combination at hand.
  • the arithmetic unit 3 based on and in function of the assessment of corresponding inputs R-, controls the playback unit 9 via the control input E g to play a selected audio test signal, and the test signal T is played back via the loudspeaker unit 11.
  • the selected audio test signal T is preferably played back in a looping or repeating manner, and — as shown schematically in FIG. 1 with the switching unit 10 — the operator manually activates the parameter adjustment on the hearing device 7, in which the computing unit 3 and the transmission behavior of the hearing aid is adjusted in accordance with the then prevailing assessment signals B according to FIG. 2.
  • FIG. 3 schematically shows, based on a simplified function block / signal flow diagram, a further development of the device according to the invention or the inventive according to the appropriate adjustment procedure.
  • An individual storage unit 50 and a standard storage unit 52 are provided on the arithmetic unit 3.
  • the audio test signals T G that are experienced during the in-situ adaptation procedure and, coupled with them, the individual assessments that are experienced are correspondingly coupled in the individual storage unit 50 the input signals at E 3 of FIG. 1 are stored and continuously supplemented during the procedure.
  • the adaptation procedure that has been experienced so far is stored in this memory 50.
  • a large number of possible test signal and assessment histories that have been lived through are stored in the standard memory unit 52 as a database, together with the respective identification of an audio test signal T 0 to be played next, which was found to be optimal for a further adaptation step in the respective histories.
  • the data in the standard storage unit 52 were determined by tests and experience and stored in the unit 52, which is preferably designed as a read-only memory. According to FIGS. 1 and 2, when the input for the assessment of significant quantities according to B of FIG. 2 is made at the moment, the individual memory 50 is updated on the one hand.
  • the adjustment history that is now lived through, stored in the individual memory 50 is carried out on a comparison unit 53 compared with the standard adaptation stories stored in the standard storage unit 52 and ascertaining from them the one which best matches the one currently stored in the individual memory 50.
  • the assigned audio test signal T 0 which is optimally to be played next, is read from the found history from the standard memory unit 52 and, according to FIG. 1, the assigned medium sector is controlled at the control input E 9 of the playback unit 9.
  • the procedure according to the invention, according to FIG. 1 basically enables the automatic triggering of audio test signals T to be played back after assessment inputs, directly and / or in a refined form, taking into account already experienced individual adaptation steps.
  • a playback unit 9 which can also be supplied with storage media 20 that are not specific to hearing aid adaptation, according to FIG. 4, when the audio storage medium 20 is read into the playback unit 9, the output A_. 2 of a number plate detector 22 - as shown schematically with the switch S 22 - fed to the one input E 24 of a comparator unit 24, at the second comparison input E 242 of which the output A_. s of a TARGET identification memory 26 is supplied. If the identifier KZ registered by means of the detector 22 does not match the one previously stored in the memory 26, the playback of the medium 20 which has just been inserted is blocked at a control input E 91 of the playback unit 9, the medium possibly ejected and the situation on a display unit 28 displayed.
  • a signal is transmitted from the output Y of the comparator unit 24 to an input E 31 of the computing unit 3, possibly also - as shown in dashed lines - to the display unit 28, with which the adaptation procedure can start.
  • Information on the medium 20 is preferably used as the identifier which is to be detected with the detector 22 provided, which is read out with the same device as the audio signals afterwards.
  • the identification information is therefore preferably applied to the medium 20 like audio information and is read out first when a CD is inserted.
  • An audio CD according to the invention shown in its track structure in FIG. 5, comprises a first group M of tracks, which comprises non-language-specific audio test signals, for example music, noises, etc.
  • the CD further comprises one or more group (s) S ⁇ r S 2 ... of tracks which contain group-specific speech recognition test signals in a corresponding number of different languages.
  • group S. is built up by German-language tracks, group S 2 by English-language tracks, etc.
  • the CD according to the invention now further comprises one or more coding track (s) C ⁇ , which may at least partially also include audio test signals, but only in exceptional cases.
  • the length of the tracks CT is thus brought that this length contains information for the operation of this CD.
  • the track length ⁇ t x on a CT track No. 1 of 15 seconds means that four language groups S are provided on the CD
  • a track length of 14 seconds means that only four S groups are provided, etc.
  • On another CT track means, for example, a length ⁇ t 2 of 15 seconds that five tracks are provided in each of the language groups S, the length 14 seconds that only four tracks are provided, etc.
  • the computing unit 3 outputs an output A 32 to the playback unit 9, to a control input E 92 , a control signal SELKAL, which positions a drive 29 for the readout device 31 - as shown schematically - on a predetermined calibration storage sector 33 of the medium 20.
  • the calibration test signal T ⁇ is transmitted from this sector 33 to the loudspeaker unit 11 and transmitted to the hearing aid 7 shown enlarged in FIG. 3 on the ear of the individual.
  • a level detection stage (not explicitly shown) is provided on the digital signal processing unit DPS of the hearing aid 7, which outputs an output signal P (T ⁇ ) dependent on the current loudness level at an output A 71 . Simultaneously with the creation of an operative connection between the output A 71 of the level detector and the computing unit 3 - shown schematically by closing the switch S 7 - the computing unit 3 controls the playback of the calibration sector on the medium 20.
  • the level signal P (T K ) is applied to one input E 351 of a calibration comparison unit 35.
  • the comparison unit 35 is further supplied, at a second input E 352 , with a SET level signal P s .
  • the comparison result or the comparison difference ⁇ is fed to the gain control input E 36 of an amplifier stage 36 provided in the audio signal path of the playback unit / loudspeaker unit, whereupon the gain G is repeatedly adjusted in a regulating sense until the calibration signal received by the hearing device 7 Test signal T ⁇ the SET Level P s corresponds and thus the loudness operating point of the hearing aid 7.
  • the aim is that the individual inputs his assessment inputs directly to the arithmetic unit - that is, according to FIG. 1 to E 3 - this procedure has to be refined because the individual is not trained to convert his or her listening experience into the weighted, standardized psychological to implement acoustic greats.
  • a decoding unit is provided on the computing unit. The representation is based on a procedure in which, switchable, both inputs by the specialist, according to FIG. 2, and inputs by the individual should be possible.
  • the signal paths B denote the assessment variables which have already been explained, expertly entered and weighted using FIG. 2. I also refer to the individual assessment values, which are also entered at input E 3 with a view to FIG. 1, as generally "reverberant", "dull", "distorted".
  • a decoding unit 40 is provided on the arithmetic unit 3 according to FIG. 1, in which, in the form of a decoding table, the standardized psychoacoustic evaluation variables, corresponding to B, are used to represent the individually entered I.
  • the Individually entered terms "distorted" mean that the loudness is too high and / or the intelligibility is too high and / or the sound quality is distorted.
  • the selection unit 8 controls the playback of the correspondingly optimal audio test signal, as previously explained.
  • Audio storage media are used, or test signals in different languages are provided on one and the same storage medium, each of which is selected by initial language selection at a control input unit.

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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)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Pour l'adaptation in situ d'un appareil auditif, des impressions auditives sont entrées (5) dans un calculateur d'adaptation (3) qui calcule les modifications à effectuer de paramètres (αx) de la fonction de transmission d'appareils auditifs et les transmet à l'appareil auditif (7). Par l'intermédiaire du calculateur, il est déterminé quel signal d'essai audio (T) doit être présenté à la personne portant l'appareil auditif. A cet effet, l'unité d'adaptation de l'appareil auditif présente, outre le calculateur (3) déjà mentionné, une unité de lecture de support de données audio (9). Par l'intermédiaire du calculateur (3), il est possible de commander (E9) le signal d'essai audio devant être lu à chaque fois.
EP99936227A 1999-08-17 1999-08-17 Systeme d'adaptation pour appareil auditif Withdrawn EP1205090A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1999/000379 WO1999053742A2 (fr) 1999-08-17 1999-08-17 Systeme d'adaptation pour appareil auditif

Publications (1)

Publication Number Publication Date
EP1205090A2 true EP1205090A2 (fr) 2002-05-15

Family

ID=4551707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936227A Withdrawn EP1205090A2 (fr) 1999-08-17 1999-08-17 Systeme d'adaptation pour appareil auditif

Country Status (7)

Country Link
US (1) US7450724B1 (fr)
EP (1) EP1205090A2 (fr)
JP (1) JP4336457B2 (fr)
CN (1) CN1184854C (fr)
AU (1) AU5145899A (fr)
CA (1) CA2381570C (fr)
WO (1) WO1999053742A2 (fr)

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CN1932753B (zh) * 2005-09-13 2010-09-29 鸿富锦精密工业（深圳）有限公司 声音输出系统及方法
US20090285424A1 (en) * 2005-11-25 2009-11-19 Phonak Ag Method for manufacturing a fitted hearing device
US8948426B2 (en) * 2006-02-17 2015-02-03 Zounds Hearing, Inc. Method for calibrating a hearing aid
DE102007035172A1 (de) * 2007-07-27 2009-02-05 Siemens Medical Instruments Pte. Ltd. Hörsystem mit visualisierter psychoakustischer Größe und entsprechendes Verfahren
DE102007039452B3 (de) * 2007-08-21 2009-06-04 Siemens Audiologische Technik Gmbh Automatische Hörer-Typ-Erkennung bei Hörhilfegeräten
WO2010034337A1 (fr) * 2008-09-23 2010-04-01 Phonak Ag Système auditif et procédé de fonctionnement associé
US20100104118A1 (en) * 2008-10-23 2010-04-29 Sherin Sasidharan Earpiece based binaural sound capturing and playback
TWI384889B (zh) 2008-12-26 2013-02-01 Alpha Networks Inc 聲音播放裝置參數調整方法
WO2010091480A1 (fr) 2009-02-16 2010-08-19 Peter John Blamey Ajustement automatisé de dispositifs auditifs
US8437486B2 (en) * 2009-04-14 2013-05-07 Dan Wiggins Calibrated hearing aid tuning appliance
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JP2015019341A (ja) * 2013-07-12 2015-01-29 株式会社タムラ製作所 音声調整卓及びこれを用いた音響システム
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Also Published As

Publication number Publication date
JP2002534821A (ja) 2002-10-15
CN1184854C (zh) 2005-01-12
WO1999053742A3 (fr) 2000-07-13
JP4336457B2 (ja) 2009-09-30
US7450724B1 (en) 2008-11-11
CN1371589A (zh) 2002-09-25
WO1999053742A2 (fr) 1999-10-28
AU5145899A (en) 1999-11-08
CA2381570C (fr) 2009-10-06
CA2381570A1 (fr) 1999-10-28

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