EP0814635B1 - Prothèse auditive - Google Patents

Prothèse auditive Download PDF

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Publication number
EP0814635B1
EP0814635B1 EP96110068A EP96110068A EP0814635B1 EP 0814635 B1 EP0814635 B1 EP 0814635B1 EP 96110068 A EP96110068 A EP 96110068A EP 96110068 A EP96110068 A EP 96110068A EP 0814635 B1 EP0814635 B1 EP 0814635B1
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EP
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Prior art keywords
signal
hearing aid
amplifier
output
calculating means
Prior art date
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Revoked
Application number
EP96110068A
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German (de)
English (en)
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EP0814635A1 (fr
Inventor
Oliver Dipl.-Ing. Weinfurtner
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Sivantos GmbH
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Siemens Audioligische Technik GmbH
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Application filed by Siemens Audioligische Technik GmbH filed Critical Siemens Audioligische Technik GmbH
Priority to DK96110068T priority Critical patent/DK0814635T3/da
Priority to DE59609755T priority patent/DE59609755D1/de
Priority to EP96110068A priority patent/EP0814635B1/fr
Priority to AT96110068T priority patent/ATE225591T1/de
Priority to US08/864,063 priority patent/US6005954A/en
Publication of EP0814635A1 publication Critical patent/EP0814635A1/fr
Application granted granted Critical
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    • 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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H04R25/507—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing implemented by neural network or fuzzy logic

Definitions

  • the invention relates to a hearing aid according to the preamble of Claim 1.
  • a signal here is the course one or more physical quantities on one or several measuring points can be understood over time; each Signal can therefore consist of a bundle of individual signals.
  • Such a hearing device is known from EP-A-0 674 464, in which a fuzzy logic controller is provided to either the signal transmission characteristic of an amplifier and Change transmission device or set of parameters influencing the signal transmission characteristic to be selected automatically from a parameter memory.
  • EP-A-0 674 463 discloses a similar hearing aid an automatic gain control circuit (automatic gain control - AGC) assigned a fuzzy logic controller is.
  • the invention accordingly has the object of the problem mentioned to solve.
  • the invention is intended to be a hearing aid be provided, which is with little developmental and Circuit effort can be made and an optimal Adaptation to the specific requirements of the hearing aid wearer allows.
  • this object is achieved by a hearing aid with the features according to claim 1.
  • a digital structure of a computing device, the fuzzy logic functions realized, offers a high degree of compatibility with digital signal processing: one additional implementation (analog / digital or digital / analog) is not required and the calculation device can completely or partially realized with the same components become like the rest of the processing of the signals. It follows the calculation device is easy to combine with conventional digital data and signal processing functions, such as in microprocessors or signal processors are common. In addition, digital technology offers Benefits such as increased immunity to interference and insensitivity against manufacturing tolerances.
  • the calculation device is preferably with conventional digital ones Components such as gates, flip-flops, memories, etc. educated; more generally with switching networks and switching mechanisms. she can be used in particular as an ASIC (application specific integrated circuit - application-specific integrated circuit) his. Alternatively, it is possible to use the calculation device as a microprocessor or microcontroller with one train associated program in a read-only memory (ROM; especially mask-programmed ROM, PROM, EPROM or EEPROM) or a read-write memory (RAM) is saved. Mixed forms are also possible; for example can use specific hardwired modules with a programmed control. This is particularly so useful for functions that are performed frequently and can be realized digitally relatively easily, for example for functions for calculating the maximum or minimums of several binary numbers.
  • the computing device is preferred in the hearing device according to the invention for direct signal processing and / or for the control of signal processing functions and / or for the automatic selection of hearing programs in the Hearing aid used.
  • the computing device of the hearing aid realizes the fuzzy logic functions are preferred by executing the Sub-steps fuzzification of sharp input variables, Evaluation of premises, evaluation of partial conclusions, Accumulation of initial terms and defuzzification.
  • the calculations required for this are preferably based on several Calculation modules distributed, the local or shared storage can have.
  • Configuration parameters of the calculation device are preferred in a memory, for example a RAM or EEPROM, filed, so that reprogramming of the calculation device by the hearing care professional and / or even an adaptation of the function of the computing device during operation of the hearing aid is possible.
  • a memory for example a RAM or EEPROM
  • a microphone acting as an input converter 12 produces a sound signal into an electrical signal and guides it an amplifier and transmission circuit 10 further.
  • the Amplifier and transmission circuit 10 amplifies the incoming Signal and processes it, for example through selective Raising or weakening certain frequency or Volume areas.
  • the output signal 28 processed in this way is output by a handset serving as an output transducer 14.
  • At least one suitable point of the amplifier and Transmission circuit 10 is a tap signal 22 from the Tapped signal path of the hearing aid and a signal processing device 16 fed.
  • the tap signal 22 can furthermore have individual signals which are transmitted by further input converters, of controls or sensors for Monitoring system properties (e.g. the Battery voltage).
  • the signal conditioning device 16 prepares the tap signal 22 suitable, for example by rectification, Averaging or derivative over time to make it one Computing device 20, which realizes fuzzy logic functions, to supply as input signal 24.
  • the content of EP-A-0 674 464 hereby expressly included in the present description.
  • the calculation device 20 has a memory 18, the intermediate results and, if necessary, configuration parameters the calculation device 20 stores.
  • the calculation device 20 processes the input signal supplied to it 24 in the manner described in more detail below the principles of fuzzy logic and gives the result as Result signal 26 to the amplifier and transmission device 10, their gain and transmission properties by the result signal acting as a control signal 26 can be changed within wide limits.
  • Hearing aid controls the result signal 26 the transmission characteristic the amplifier and transmission device 10 directly by the individual signals of the Result signal 26 individual parameters of the amplifier and Transmission device 10, for example the gain certain frequency bands or response and fall times an automatic gain control control - AGC).
  • the amplifier and Transfer device 10 has a memory that several contains preset or programmed parameter sets.
  • a parameter set of this memory is based on the result signal 26, selected, for example, that the digital result signal 26 as a memory address serves.
  • the amplifier and transmission device 10 no immediate Signal path from input converter 12 to output converter 14 on. Rather, the signal path runs from the input converter 12 via a first part of the amplifier and transmission device 10 to the signal conditioning device 16, from there to the calculation device 20, from there as a result signal 26 to a second part of the amplifier and transmission device 10 and from there as an output signal 28 to Output converter 14. In the second part of the amplifier and Transmission device 10 becomes the digital result signal 26 only converted into an analog signal and possibly filtered.
  • the expression between IF and THEN is called the premise; the expression to the right of the THEN is called a conclusion designated.
  • the sub-expressions in parentheses become corresponding referred to as partial premises and partial conclusions.
  • the calculation device 20 serves the structure shown in FIG. 2 only for the conceptual representation of a fuzzy logic calculation, because in actual implementation one arbitrary assignment of the partial functions shown in FIG. 2 to one or more modules of the calculation device 20 can be done.
  • Step 1) Fuzzification of the input variables
  • Fuzzification determines the value of a membership function of every linguistic term of corresponding linguistic variables in the current Value of the input variable.
  • the example set of rules contains two linguistic variables A and B, each with two linguistic terms, namely (A is small), (A is large) and (B is small), (B is large).
  • the graphs shown in FIG. 3 represent the membership functions of these terms: ⁇ small (A), ⁇ large (A) and ⁇ small (B), ⁇ large (B).
  • Affiliation function is used to determine the degree of fulfillment by reading out the corresponding x value assigned y value from the memory.
  • a negated variable occurs in the set of rules, it is Value of the inverse membership function according to the above to determine the specified formula. You can choose at the Calculate the values given in square brackets above be used.
  • Step 2) Evaluation of the premises
  • the values of the membership functions calculated in step 1) which is the degree of fulfillment of the partial premises (A large), (B is large) and so on, are in the example set of rules used here by linguistic ANDund OR operators on the premises of the individual rules connected.
  • the calculation of the AND and OR operations of the partial premises is preferably done by calculating the Minimum or maximum of the corresponding degree of fulfillment, as shown in FIG. 6.
  • the result of this Operation is the degree of fulfillment of the respective premise [(A is large) AND (B is large)], [(A is large) OR (B is large)] and so on. This calculation is done for all the rules.
  • the first Partial step determines the degree of activation of the partial conclusion. The principle applies that every partial conclusion in is activated to the extent assigned to it in the set of rules Premises are fulfilled.
  • the sharp initial value x is calculated as the mean value of the positions of the maxima of f active (X).
  • the area over which integration or summation is carried out is preferably limited to the interval between X min and X max ; the interval between the smallest and the largest X value, for which f active (X)> 0 applies. This information arises when the starting terms are accumulated.
  • mapping functions the degree of activation of the conclusion is mapped on the one hand to the activated area F n of the starting term, and on the other hand it is centered on a position S n this activated surface imaged. Both mapping rules do not have to be evaluated at runtime of the system, since they are only dependent on the starting terms and the method of converting the degree of activation of the conclusion into the activation of the terms (maximum formation or multiplication) shown in FIG. 8.
  • This calculation method implicitly includes accumulation the terms by the method of addition.
  • the 12 is a first embodiment of the invention Calculator 20 shown, which described Executes fuzzy logic functions.
  • the calculation device 20 has six calculation modules 30, which are connected in series via five buffers 32 are.
  • Each calculation module 30 is also one Memory module 34 each assigned a configuration input 36.
  • a control module 40 is with all calculation modules 30 and connected to a working memory 42 on which can be accessed externally via a connection 44.
  • Each partial function type 50, 52, 54 shown in FIG. 56, 58 and 60 corresponds to one of the calculation modules 30 first calculation module 30 receives the sharp input values as input signal 24; the last calculation module 30 there the calculated sharp result values as result signal 26 out. The transfer of the intermediate results between the calculation modules 30 takes place via the buffer 32.
  • each Memory module 34 may also contain configuration information for that executed by the respective calculation module 30 Partial function included. Such configuration information can, for example, in the first calculation module 30 receives the input signal 24, the membership functions of the Be input variables. To configure the fuzzy logic functions of the calculation device 20 are the memory modules 34 writable from the outside via the configuration inputs 36.
  • the control module 40 coordinates the overall process and the cooperation of the calculation modules 30. For example the processing time in the individual calculation modules 30 be different. It is the task of the control module 40 then to notify each calculation module 30 if the intermediate results of the previous calculation module 30 for Pending further processing.
  • calculation modules 30 and others Components of the computing device 20 in digital Circuit technology results directly in a known manner from the description of the corresponding sub-functions. she can be done by switching networks, switching mechanisms or a combination happen from both. Their exact function can be determined by configuration information be determined.
  • Computation modules 30 do not necessarily need six his. There may be more or fewer calculation modules 30 be to calculate the fuzzy logic functions to divide finer or coarser. For example five calculation modules 30 corresponding to those described above Steps 1) to 5) can be used, or only a single one Calculation module 30 'as shown in FIG. 14 is.
  • FIG. 13 shows an embodiment variant of the calculation device 20. All buffers shown in Fig. 12 32 and memory modules 34 and the working memory 42 summarized here to the single memory 18. This allows a more rational use of storage space because it is partitioned as desired and according to the individual modules Can be assigned to demand. So information, which are required by different modules, only once are stored in the memory 18.
  • the calculation modules 30 (or the calculation module 30 ') access on a preferably hard-wired module for determination the minimum minimum and / or the maximum of two or more Binary numbers. This is advantageous because the formation of the Minimum and maximum two in many fuzzy logic subfunctions occurring basic functions are.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Artificial Intelligence (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Automation & Control Theory (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Feedback Control In General (AREA)
  • Adornments (AREA)
  • Finger-Pressure Massage (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Claims (9)

  1. Prothèse auditive comportant un dispositif d'amplification et de transmission (10), qui est relié d'une part à un convertisseur d'entrée (12) et qui envoie d'autre part un signal de sortie (28) à un convertisseur de sortie (14), ainsi qu'un dispositif de calcul (20) qui réalise des fonctions de logique floue, qui réagit à un signal prélevé (22) prélevé au niveau du dispositif d'amplification et de transmission (10) et qui fournit un signal de résultat (26) qui est envoyé au dispositif d'amplification et de transmission (10) et qui influence le signal de sortie (28) de celui-ci, caractérisée par le fait que
    le dispositif d'amplification et de transmission (10) comporte entre le convertisseur d'entrée (12) et le convertisseur de sortie (14) une voie de signal dont la caractéristique d'amplification et de transmission peut être influencée par le signal de résultat (26) du dispositif de calcul (20),
    le dispositif d'amplification et de transmission (10) comporte une mémoire dans laquelle plusieurs ensembles de paramètres d'amplification et de transmission sont mémorisée et le signal de résultat (26) du dispositif de calcul (20) sert à sélectionner l'un de ces ensembles de paramètres,
    Il est prévu un dispositif de préparation de signal (16) qui prépare le signal prélevé (22) prélevé au niveau du dispositif d'amplification et de transmission (10) et qui l'envoie comme signal d'entrée (24) au dispositif de calcul (20), et
    au moins le dispositif de calcul (20) et le dispositif de préparation de signal (16) sont réalisés en technique de circuit numérique.
  2. Prothèse auditive selon la revendication 1, caractérisée par le fait qu'une vole de signal de la prothèse auditive va du convertisseur d'entrée (12) au convertisseur de sortie (14) en passant par une première partie du dispositif d'amplification et de transmission (10), par le dispositif de calcul (20) et par une deuxième partie du dispositif d'amplification et de transmission (10).
  3. Prothèse auditive selon la revendication 1, caractérisée par le fait que le dispositif d'amplification et de transmission (10) comporte un convertisseur analogique-numérique et un convertisseur numérique-analogique.
  4. Prothèse auditive selon l'une des revendications 1 à 3, caractérisée par le fait que le dispositif de calcul (20) comporte un module de commande (40), au moins une mémoire (18 ; 32, 34, 42) et au moins un module de calcul (30 ; 30').
  5. Prothèse auditive selon la revendication 4, caractérisée par le fait qu'il est prévu dans le dispositif de calcul (20) un module de calcul (30) particulier et/ou un module de mémoire (34) particulier pour chaque étape d'un procédé destiné à la réalisation des fonctions de logique floue.
  6. Prothèse auditive selon la revendication 4 ou 5, caractérisée par le fait qu'il est prévu dans le dispositif de calcul (20) plusieurs modules de calcul (30) branchés les uns derrière les autres et au moins une mémoire intermédiaire (32) pour la liaison de modules de calcul (30) consécutifs.
  7. Prothèse auditive selon l'une des revendications 1 à 6, caractérisée par le fait que le dispositif de calcul (20) est conçu pour réaliser les fonctions de logique floue en sous-étapes :
    traduction en logique floue (50) de variables d'entrée exactes,
    évaluation (52) de prémisses,
    évaluation (54,56) de conclusions partielles,
    accumulation (58) de termes de sortie, et
    traduction en logique non floue (60).
  8. Prothèse auditive selon la revendication 7, caractérisée par le fait que le dispositif de calcul (20) est conçu pour utiliser lors de la traduction en logique floue (50) des fonctions d'appartenance dont la valeur de fonction s'étend à chaque fois linéairement entre au maximum quatre valeurs caractéristiques, les valeurs en ordonnées des au maximum quatre valeurs caractéristiques valant à chaque fols soit 0 soit 1.
  9. Prothèse auditive selon la revendication 7 ou 8, caractérisé par le fait que le dispositif de calcul (20) est conçu pour réaliser l'accumulation (58) des termes de sortie et la traduction en logique non floue (60) pour chaque variable de sortie simultanément en réalisent la règle de calcul
    Figure 00280001
    pour chaque variable de sortie, le nombre des termes de sortie de ces variables de sortie étant désigné par N, la surface activée du n-ème terme de sortie étant désignés par Fn et la position du centre de gravité de cette surface étant désignée par Sn.
EP96110068A 1996-06-21 1996-06-21 Prothèse auditive Revoked EP0814635B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK96110068T DK0814635T3 (da) 1996-06-21 1996-06-21 Høreapparat
DE59609755T DE59609755D1 (de) 1996-06-21 1996-06-21 Hörgerät
EP96110068A EP0814635B1 (fr) 1996-06-21 1996-06-21 Prothèse auditive
AT96110068T ATE225591T1 (de) 1996-06-21 1996-06-21 Hörgerät
US08/864,063 US6005954A (en) 1996-06-21 1997-05-28 Hearing aid having a digitally constructed calculating unit employing fuzzy logic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96110068A EP0814635B1 (fr) 1996-06-21 1996-06-21 Prothèse auditive

Publications (2)

Publication Number Publication Date
EP0814635A1 EP0814635A1 (fr) 1997-12-29
EP0814635B1 true EP0814635B1 (fr) 2002-10-02

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EP96110068A Revoked EP0814635B1 (fr) 1996-06-21 1996-06-21 Prothèse auditive

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EP (1) EP0814635B1 (fr)
AT (1) ATE225591T1 (fr)
DE (1) DE59609755D1 (fr)
DK (1) DK0814635T3 (fr)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
EP0964603A1 (fr) * 1998-06-10 1999-12-15 Oticon A/S Procédé de traitement de signaux sonores et dispositif de mise en oeuvre du procédé
AU766092B2 (en) * 1998-11-24 2003-10-09 Phonak Ag Hearing aid
US6633202B2 (en) 2001-04-12 2003-10-14 Gennum Corporation Precision low jitter oscillator circuit
US6937738B2 (en) * 2001-04-12 2005-08-30 Gennum Corporation Digital hearing aid system
EP1251355B1 (fr) * 2001-04-18 2007-12-05 Gennum Corporation Détecteur numérique quasi-RMS
DE60209161T2 (de) 2001-04-18 2006-10-05 Gennum Corp., Burlington Mehrkanal Hörgerät mit Übertragungsmöglichkeiten zwischen den Kanälen
US20020191800A1 (en) * 2001-04-19 2002-12-19 Armstrong Stephen W. In-situ transducer modeling in a digital hearing instrument
DE10131964B4 (de) * 2001-07-02 2005-11-03 Siemens Audiologische Technik Gmbh Verfahren zum Betrieb eines digitalen programmierbaren Hörgerätes sowie digitales programmierbares Hörgerät
EP1284587B1 (fr) 2001-08-15 2011-09-28 Sound Design Technologies Ltd. Appareil auditif reconfigurable à faible consommation d'énergie
US9787413B2 (en) * 2014-12-08 2017-10-10 Walid Khairy Mohamed Ahmed Circuits, systems and methods of hybrid electromagnetic and piezoelectric communicators
US10756811B2 (en) 2017-09-10 2020-08-25 Mohsen Sarraf Method and system for a location determination using bi-modal signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603196B1 (fr) * 1991-09-11 1996-04-24 Siemens Aktiengesellschaft Regisseur a logique floue avec organisation optimisee de la memoire
JPH06195481A (ja) * 1992-03-27 1994-07-15 Nec Corp ファジー推論システム
EP0674464A1 (fr) * 1994-03-23 1995-09-27 Siemens Audiologische Technik GmbH Prothèse auditive programmable avec commande en logique floue
EP0674463A1 (fr) * 1994-03-23 1995-09-27 Siemens Audiologische Technik GmbH Prothèse auditive programmable
EP0674462B1 (fr) * 1994-03-23 2002-08-14 Siemens Audiologische Technik GmbH Dispositif pour l'adaptation de prothèses auditives
DK0681411T3 (da) * 1994-05-06 2003-05-19 Siemens Audiologische Technik Programmerbart høreapparat
DE4419901C2 (de) * 1994-06-07 2000-09-14 Siemens Audiologische Technik Hörhilfegerät
DE4439505A1 (de) * 1994-11-08 1996-05-09 Siemens Ag Verfahren zum Entwurf eines Fuzzy-Reglers

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Publication number Publication date
US6005954A (en) 1999-12-21
ATE225591T1 (de) 2002-10-15
EP0814635A1 (fr) 1997-12-29
DK0814635T3 (da) 2003-02-03
DE59609755D1 (de) 2002-11-07

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