EP1360870B1 - Method for operating a hearing aid system and hearing aid system - Google Patents
Method for operating a hearing aid system and hearing aid system Download PDFInfo
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- EP1360870B1 EP1360870B1 EP01982121A EP01982121A EP1360870B1 EP 1360870 B1 EP1360870 B1 EP 1360870B1 EP 01982121 A EP01982121 A EP 01982121A EP 01982121 A EP01982121 A EP 01982121A EP 1360870 B1 EP1360870 B1 EP 1360870B1
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- hearing aid
- acoustic field
- hearing
- field characteristics
- aid system
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Images
Classifications
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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
- H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
- H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; 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
- 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
- H04R25/558—Remote control, e.g. of amplification, frequency
Definitions
- the invention relates to a method for operating a hearing aid system and a hearing aid system having at least two hearing aid devices, between which a signal path is provided, and to at least one signal processing unit which is adaptable to different hearing situations.
- a hearing aid which has a signal analysis unit for automatic conversion between different hearing programs, which recognizes the current hearing situation and selects a suitable hearing program.
- the disadvantage here is that the automatic detection of the hearing situation in two hearing aids of a hearing aid system lead to different results and thus to the operation of hearing aids in different hearing programs.
- a hearing aid system with at least two hearing aids for binaural supply of a hearing aid wearer in which a transmission of acoustic signals is provided between the two hearing aids.
- a disadvantage of the known hearing aid system is the high amount of data that is transmitted between the two hearing aids.
- a hearing aid according to the invention may be a hearing aid (BTE) worn behind the ear, a hearing aid (ITO) worn in the ear, a wholly or partially implantable hearing aid, a hearing aid worn on the body, a handheld device, a closer one Acting environment of a hearing aid and cooperating with this "external processing unit", etc. act.
- BTE hearing aid
- ITO hearing aid
- ITO hearing aid
- a wholly or partially implantable hearing aid a hearing aid worn on the body
- handheld device a closer one Acting environment of a hearing aid and cooperating with this "external processing unit", etc. act.
- the hearing device system comprises at least two hearing aid devices, between which a signal path is provided for data transmission, and at least one signal processing unit which is adaptable to different listening situations.
- a system can be composed, for example, of a hearing aid worn behind the ear with a microphone for signal recording, a signal processing unit and a receiver for supplying an ear of a hearing impaired person and a body-worn accessory "external processor unit" with a microphone for signal recording
- such a system usually two hearing aids worn on the head, each with a microphone for signal recording, a signal analysis unit for generating sound field characteristics, a signal processing unit for processing the input signal in adaptation to the hearing loss of the hearing aid wearer, a control and evaluation unit for the determination of Have parameters of the signal processing unit based on the sound field characteristics and a handset for signal output.
- the external processor unit is designed as a remote control for the hearing aid system. So are in addition to the o.g. Functions also combines functions for comfortable operation of the hearing aid system in a single device.
- the spatial characteristic values of the sound field can in turn be subdivided into coherence, directions of incidence of interference signals, direction of arrival of the useful signal, etc.
- Another variant provides that when a hearing aid device of a hearing aid system according to the invention registers a relevant change of sound field characteristics, a comparison between the hearing aid devices of the hearing aid system takes place.
- the adaptation of hearing aid devices of the hearing device system takes place by manual actuation of a control element of the hearing device system by the hearing device wearer.
- the operating element provided for this purpose can also be arranged on a remote control.
- FIG. 2 schematically illustrates the internal structure of a hearing aid 1 of the hearing aid system 1, 2, 3 according to FIG.
- the hearing aid 1 comprises a directional microphone 10 with a variable directional characteristic for receiving an acoustic input signal. This is supplied to a signal processing unit 11, in which a conditioning of the input signal for adaptation to the hearing loss of a hearing aid wearer takes place.
- the output signal of the signal processing unit 11 is fed to a power amplifier 12 and finally to a receiver 13 for signal output.
- the illustrated hearing device 1 comprises a signal analysis unit 14 in which characteristic parameters of the sound field in which the hearing device 1 is located are determined from the input signal. These sound field characteristics characterize signal levels, frequency spectra, modulation frequencies, modulation depths, noise components, spatial characteristics etc. of acoustic field signals.
- the spatial characteristics of the sound field may in turn include the coherence, directions of incidence of interfering signals, the direction of incidence of the useful signal, etc.
- the sound field characteristics determined in this way are stored in a memory area 15A of a memory 15 of the hearing aid 1.
- the hearing device 1 For wireless signal transmission between the hearing aid 1 and the further hearing aid 2 as well as the external processor unit 3 the hearing device 1 has the transmitting and receiving unit 16. About this and the signal path 18, the sound field characteristics determined in the hearing aid 1 are transmitted to the hearing aid 2 and the external processor unit 3. By means of the transmitting and receiving unit 16, the hearing device in turn receives via the signal path 18 the sound field characteristics determined in an analogous manner in the second hearing device 2 and the external processor unit 3. In the exemplary embodiment, these are stored in the memory areas 15B and 15C of the memory 15. All three memory areas 15A, 15B, 15C are fed to the control and evaluation unit 17, which determines parameters for controlling the signal processing unit 11 in adaptation to the sound field from the sound field characteristics.
- Figure 3 shows the internal structure of the external processor unit 3 in the form of a remote control according to Figure 1.
- These also has a microphone 20 for signal recording and a signal analysis unit 21 for generating sound field characteristics, in an operating mode of the hearing aid system 1, 2, 3 via the transmitting and receiving unit 23 and the signal path 25 are forwarded to the two hearing aids 1 and 2 in the hearing aid system.
- the two hearing aids 1 and 2 are thus each the sound field characteristics of the location of the hearing aid, the location of the other hearing aid and the location of the external processor unit 3 before.
- a comprehensive sound field analysis and, since the sound field characteristics are equally present in both hearing aids 1 and 2 allows the synchronization of the two hearing aids.
- the sound field characteristic values of all three hearing aid devices also converge in the external processor unit 3.
- it is equipped with a memory 22 which is subdivided into the memory areas 22A, 22B, 22C. Because more space is available for the control and evaluation unit 24 in the external processor unit 3 in comparison with the hearing aids 1 and 2, the latter has a correspondingly complex design, has a higher processor power and therefore permits a more extensive analysis of the sound field characteristics for the determination the listening situation.
- the signal path 25 (the composed of the signal paths 5 and 6 according to FIG. 1) and transmits the transmitting and receiving unit 16 to the control and evaluation unit 17 of the hearing aids 1 and 2 in order to adapt the signal processing unit 11 to this auditory situation.
- the illustrated components of the hearing aids or the external processor unit can be implemented in analog or digital circuit technology.
- the signal analysis units 14 and 21 as well as the control and evaluation units 17 and 24 comprise neural structures and fuzzy logic for the optimized determination of sound field characteristics, the hearing situation and parameters of the signal processing unit 11.
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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)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betrieb eines Hörgerätesystems sowie ein Hörgerätesystem mit wenigstens zwei Hörhilfegeräten, zwischen denen ein Signalpfad vorgesehen ist, und mit wenigstens einer Signalverarbeitungseinheit, die an verschiedene Hörsituationen anpassbar ist.The invention relates to a method for operating a hearing aid system and a hearing aid system having at least two hearing aid devices, between which a signal path is provided, and to at least one signal processing unit which is adaptable to different hearing situations.
In vielen Fällen betrifft eine Schwerhörigkeit beide Ohren, der Hörgeschädigte sollte beidohrig (binaural) mit Hörgeräten versorgt werden. Moderne Hörgeräte verfügen dabei über Signalverarbeitungsalgorithmen, die abhängig von der Hörsituation die Parameter der Hörgeräte automatisch variieren. Diese Veränderungen betreffen einerseits den Übergang zwischen Mikrofonmodi (Omni- bzw. verschiedene Richtmikrofonmodi), andererseits kann die Wirkung verschiedener Blöcke der Signalverarbeitung an die Hörsituation angepasst werden. Bei der binauralen Versorgung wird die Hörsituation an beiden Ohren bewertet. Durch ein an beiden Ohren leicht unterschiedliches Schallfeld kann die Bewertung allerdings leicht zu differierenden Aussagen führen. Beispielsweise im Innenraum eines PKW können sich die an beiden Ohren gemessenen Schallpegel deutlich unterscheiden, auch eine Aussage über die räumliche Anordnung der Störschallquellen ist hier sehr schwankend. Bei einer getrennten Bewertung sind also unterschiedliche Einstellungen der Hörgeräte nur schwierig zu umgehen.In many cases hearing impairment affects both ears, the hearing impaired should be provided binaurally with hearing aids. Modern hearing aids have signal processing algorithms which automatically vary the parameters of the hearing aids as a function of the hearing situation. On the one hand these changes affect the transition between microphone modes (omni or different directional microphone modes), on the other hand the effect of different blocks of the signal processing can be adapted to the listening situation. In binaural care, the hearing situation is assessed on both ears. However, a slightly different sound field on both ears can lead to slightly different statements. For example, in the interior of a car, the sound levels measured at both ears can be significantly different, even a statement about the spatial arrangement of the noise sources is very unstable here. In a separate assessment so different settings of the hearing aids are difficult to work around.
Aus der EP1,017,252 ist ein Hörgerätesystem mit zwei am Kopf tragbaren Hörgeräten und einem am Körper getragenen Hörgerätemodul bekannt. Zwischen den Hörgeräten und dem Modul ist eine drahtlose Signalübertragung vorgesehen.From EP1,017,252 a hearing aid system with two head-worn hearing aids and a worn on the body hearing aid module is known. Between the hearing aids and the module, a wireless signal transmission is provided.
In einem ersten Ausführungsbeispiel werden durch die im Modul vorhandenen Mikrophone Schallsignale aufgenommen, verarbeitet und als Audiosignale auf die Hörgeräte übertragen. In einem zweiten Ausführungsbeispiel weisen auch die Hörgeräte Mikrophone auf. Die aus den Mikrophonen der Hörgeräte generierten Audiosignale werden auf das Modul übertragen, dort zusammen mit den Mikrophonsignalen des Moduls verarbeitet und zu den Hörgeräten rückübertragen.In a first exemplary embodiment, sound signals recorded by the microphones present in the module are recorded, processed and transmitted to the hearing aids as audio signals. In a second embodiment, the hearing aids also have microphones. The audio signals generated from the microphones of the hearing aids are transmitted to the module, processed there together with the microphone signals of the module and transmitted back to the hearing aids.
Aus der US 5,604,812 ist ein Hörhilfegerät bekannt, das zur automatischen Umstellung zwischen verschiedenen Hörprogrammen eine Signalanalyseeinheit aufweist, welche die aktuelle Hörsituation erkennt und ein geeignetes Hörprogramm auswählt. Nachteilig dabei ist, dass die automatische Erkennung der Hörsituation bei zwei Hörhilfegeräten eines Hörgerätesystems zu unterschiedlichen Ergebnissen und somit zum Betrieb der Hörhilfegeräte in unterschiedlichen Hörprogrammen führen kann.From US Pat. No. 5,604,812 a hearing aid is known, which has a signal analysis unit for automatic conversion between different hearing programs, which recognizes the current hearing situation and selects a suitable hearing program. The disadvantage here is that the automatic detection of the hearing situation in two hearing aids of a hearing aid system lead to different results and thus to the operation of hearing aids in different hearing programs.
Aus der WO 00/00001 ist ein Verfahren zum Betrieb binauraler Hörgeräte bekannt, von denen jedes in Situ in mindestens zwei Übertragungsmodi von Mikrofon- zu Ausgangswandler-Anordnung (Hörprogramme) umschaltbar ist. Die jeweils aktiven Hörprogramme der Hörgeräte werden manuell oder automatisch über eine drahtlose Verbindung zwischen den Hörgeräten auf vorgegebene oder vorgebbare Programm-Paarungen synchronisiert. Nachteilig bei dem bekannten Verfahren ist, dass die augenblickliche Hörsituation häufig nicht richtig erkannt wird und eines der Hörgeräte oder beide Hörgeräte in einem falschen Hörprogramm betrieben werden.From WO 00/00001 a method for operating binaural hearing aids is known, each of which is switchable in situ in at least two transmission modes from microphone to output transducer arrangement (listening programs). The respective active hearing programs of the hearing aids are synchronized manually or automatically via a wireless connection between the hearing aids to predetermined or predefinable program pairings. A disadvantage of the known method is that the current hearing situation is often not recognized correctly and one of the hearing aids or both hearing aids are operated in a wrong hearing program.
Aus der US 5,757,932 ist ein Hörgerätesystem mit wenigstens zwei Hörgeräten zur binauralen Versorgung eines Hörgeräteträgers bekannt, bei dem zwischen den beiden Hörgeräten eine Übertragung akustischer Signale vorgesehen ist. Nachteilig bei dem bekannten Hörgerätesystem ist die hohe Datenmenge, die zwischen den beiden Hörgeräten übertragen wird.From US 5,757,932 a hearing aid system with at least two hearing aids for binaural supply of a hearing aid wearer is known, in which a transmission of acoustic signals is provided between the two hearing aids. A disadvantage of the known hearing aid system is the high amount of data that is transmitted between the two hearing aids.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zum Betrieb eines Hörgerätesystems sowie ein Hörgerätesystem zu schaffen, durch welche die automatische Anpassung von Hörhilfegeräten an unterschiedliche Hörsituationen verbessert wird.The object of the present invention is to provide a method for operating a hearing aid system and a hearing aid system by which the automatic adaptation of hearing aid devices to different hearing situations is improved.
Diese Aufgabe wird gelöst durch ein Verfahren mit den Merkmalen des Anspruchs 1. Der das Hörgerätesystem betreffende Teil der Aufgabe wird gelöst durch die Merkmale des Anspruchs 3. Vorteilhafte Weiterbildungen des Verfahrens und des Hörgerätesystems sind in den Unteransprüchen angegeben.This object is achieved by a method having the features of
Im Zusammenhang mit der Erfindung werden unter "Schallfeld-Kennwerten" Eigenschaften des Schallfeldes kennzeichnende Größen verstanden. Diese Größen können Signalpegel, Frequenzspektren, Modulationsfrequenzen, Modulationstiefen, Rauschanteile, räumliche Kennwerte usw. akustischer Signale des Schallfeldes betreffen. Die aktuelle Hörsituation als solche, in der das Hörgerät gerade betrieben wird, ist nicht als Schallfeld-Kennwert im Sinne der Erfindung zu verstehen.In the context of the invention, characteristics of the sound field become characteristic under "sound field characteristics" Sizes understood. These quantities may relate to signal levels, frequency spectra, modulation frequencies, modulation depths, noise, spatial characteristics, etc. of the sound field acoustic signals. The current hearing situation as such, in which the hearing aid is currently being operated, is not to be understood as a sound field characteristic within the meaning of the invention.
Bei einem Hörhilfegerät gemäß der Erfindung kann es sich um ein hinter dem Ohr tragbares Hörgerät (HdO), ein in dem Ohr tragbares Hörgerät (IdO), ein ganz oder teilweise implantierbares Hörgerät, eine am Körper tragbare Hörhilfe, ein Taschengerät, eine in der näheren Umgebung eines Hörgerätes befindliche und mit diesem zusammenwirkende "externe Prozessoreinheit" usw. handeln.A hearing aid according to the invention may be a hearing aid (BTE) worn behind the ear, a hearing aid (ITO) worn in the ear, a wholly or partially implantable hearing aid, a hearing aid worn on the body, a handheld device, a closer one Acting environment of a hearing aid and cooperating with this "external processing unit", etc. act.
Das Hörgerätesystem gemäß der Erfindung umfasst wenigstens zwei Hörhilfegeräte, zwischen denen zur Datenübertragung ein Signalpfad vorgesehen ist, und wenigstens eine Signalverarbeitungseinheit, die an verschiedene Hörsituationen anpassbar ist. Ein derartiges System kann sich beispielsweise aus einem hinter dem Ohr tragbaren Hörgerät mit einem Mikrofon zur Signalaufnahme, einer Signalverarbeitungseinheit und einem Hörer zur Versorgung eines Ohrs eines Hörgeschädigten und einem am Körper getragenen Zusatzgerät, einer externen Prozessoreinheit", mit einem Mikrofon zur Signalaufnahme zusammensetzen. In der Regel wird ein solches System jedoch zwei am Kopf tragbare Hörgeräte mit je einem Mikrofon zur Signalaufnahme, eine Signalanalyseeinheit zum Generieren von Schallfeld-Kennwerten, eine Signalverarbeitungseinheit zur Verarbeitung des Eingangssignals in Anpassung an den Hörverlust des Hörgeräteträgers, eine Steuer- und Auswerteeinheit zur Bestimmung von Parametern der Signalverarbeitungseinheit auf Basis der Schallfeld-Kennwerte und einen Hörer zur Signalabgabe aufweisen.The hearing device system according to the invention comprises at least two hearing aid devices, between which a signal path is provided for data transmission, and at least one signal processing unit which is adaptable to different listening situations. Such a system can be composed, for example, of a hearing aid worn behind the ear with a microphone for signal recording, a signal processing unit and a receiver for supplying an ear of a hearing impaired person and a body-worn accessory "external processor unit" with a microphone for signal recording However, such a system usually two hearing aids worn on the head, each with a microphone for signal recording, a signal analysis unit for generating sound field characteristics, a signal processing unit for processing the input signal in adaptation to the hearing loss of the hearing aid wearer, a control and evaluation unit for the determination of Have parameters of the signal processing unit based on the sound field characteristics and a handset for signal output.
Zur Anpassung der Signalverarbeitungseinheit an unterschiedliche Hörsituationen werden in den Hörhilfegeräten durch Auswertung der Mikrofonsignale Schallfeld-Kennwerte erzeugt und in mindestens einem der Hörhilfegeräte zusammengeführt. In diesem liegen dann alle im System vorhandenen Daten zur Bewertung des Schallfeldes vor, so dass eine optimierte Anpassung der Signalverarbeitungseinheit an das Schallfeld ermöglicht wird. Im Unterschied zum Stand der Technik ist es hierfür nicht erforderlich, Audiosignale oder verarbeitete Audiosignale zu übertragen, was ein erheblich höheres Datenvolumen bedeuten würde und insbesondere bei einer drahtlosen Verbindung zwischen den Hörhilfegeräten durch den damit verbundenen Energiebedarf und die begrenzte'Kapazität üblicher Hörgeräte-Spannungsquellen nahezu unmöglich wäre.For adaptation of the signal processing unit to different listening situations are in the hearing aid by Evaluation of the microphone signals Sound field characteristics generated and merged in at least one of the hearing aids. In this then all data available in the system for the evaluation of the sound field, so that an optimized adaptation of the signal processing unit is made possible to the sound field. In contrast to the prior art, this does not require the transmission of audio signals or processed audio signals, which would mean a considerably higher data volume and, in particular, a wireless connection between the hearing aid devices due to the associated energy requirement and the limited capacity of conventional hearing aid voltage sources impossible.
Zusätzlich zum Erkennen der Hörsituation können die in einem Hörhilfegerät zusammengeführten Daten vorteilhaft auch zur Feedbackerkennung dienen. Erkanntes Feedback lässt sich sodann durch zweckmäßige Anpassung der Signalverarbeitung des betroffenen Hörhilfegerätes beseitigen.In addition to detecting the hearing situation, the data merged in a hearing aid device can also advantageously be used for feedback recognition. Detected feedback can then be eliminated by appropriate adaptation of the signal processing of the hearing aid device concerned.
Umfasst das Hörgerätesystem gemäß der Erfindung zwei Hörgeräte zur binauralen Versorgung, so werden vorzugsweise in beiden Hörgeräten Schallfeld-Kennwerte generiert und auf das jeweils andere Hörgerät übertragen. In beiden Hörgeräten liegt dann die gleiche, optimierte Datenbasis zur Bewertung des Schallfeldes vor, so dass ihre Signalverarbeitungseinheiten gleichermaßen an das Schallfeld angepasst und im gleichen Hörprogramm betrieben werden können. Herrschen an beiden Hörgeräten leicht unterschiedliche akustische Verhältnisse, was beispielsweise durch die Abschattung des Kopfes oder im Inneren eines PKW entstehen kann, bewirkt die in beiden Hörgeräten vorhandene Steuer- und Auswerteeinheit auf Basis der jeweils vorliegenden binauralen Information die Einstellung von Parametern der Signalverarbeitungseinheit zur Anpassung an die Hörsituation. Ferner ermöglicht es die Zusammenführung von Schallfeld-Kennwerten, zusätzliche Informationen über die Schallfeldgeometrie zu gewinnen.If the hearing device system according to the invention comprises two hearing aids for binaural supply, sound field characteristics are preferably generated in both hearing aids and transmitted to the respective other hearing device. In both hearing aids is then the same, optimized database for the evaluation of the sound field, so that their signal processing units can be equally adapted to the sound field and operated in the same hearing program. If there are slightly different acoustic conditions on both hearing aids, which can occur, for example, as a result of the shadowing of the head or in the interior of a car, the control and evaluation unit present in both hearing aids effects the setting of parameters of the signal processing unit for adaptation on the basis of the binaural information available in each case the listening situation. Furthermore, the combination of sound field characteristics makes it possible to obtain additional information about the sound field geometry.
Es ist jedoch auch möglich, dass in nur einem der Hörhilfegeräte die Schallfeld-Kennwerte zusammengeführt werden zum Bestimmen der Hörsituation und von diesem ein Signal zur Kennzeichnung der Hörsituation auf weitere Hörhilfegeräte des Hörgerätesystems rückübertragen wird. So könnten bei einem Hörgerätessystem mit zwei am Kopf tragbaren Hörgeräten und einer externen Prozessoreinheit, die wenigstens ein Mikrofon umfasst, in den Hörgeräten Schallfeld-Kennwerte generiert und auf die externe Prozessoreinheit übertragen werden, die analog zu den Hörgeräten ihrerseits Schallfeld-Kennwerte generiert. Liegt die externe Prozessoreinheit in der näheren Umgebung der Hörgeräte, enthält man so zusätzliche Informationen über das Schallfeld. Die Informationen der externen Prozessoreinheit können für den Fall des Abstimmungsbedarfs zwischen den in den Hörgeräten gewonnenen Ergebnissen für eine Entscheidung herangezogen werden, oder die externe Prozessoreinheit gibt als "Master" manuell oder automatisch ausgelöst die gültigen Schallfeld-Kennwerte für das System bzw. das Hörprogramm vor.However, it is also possible for the sound field characteristic values to be combined in only one of the hearing aid devices to determine the hearing situation and from this a signal for characterizing the hearing situation to be re-transmitted to further hearing aid devices of the hearing aid system. Thus, in a hearing aid system with two head-worn hearing aids and an external processor unit comprising at least one microphone, sound field characteristics could be generated in the hearing aids and transmitted to the external processor unit, which in turn generates sound field characteristics analogously to the hearing aids. If the external processor unit in the vicinity of the hearing aids, so you have additional information about the sound field. The information of the external processor unit can be used for the case of the coordination need between the results obtained in the hearing aids for a decision, or the external processor unit as "master" manually or automatically triggered the valid sound field characteristics for the system or the hearing program ,
Gemäß einer Variante der Erfindung ist die externe Prozessoreinheit als Fernbedienung für das Hörgerätesystem ausgebildet. So sind neben den o.g. Funktionen auch Funktionen zur komfortablen Bedienung des Hörgerätesystems in einem einzigen Gerät vereint.According to a variant of the invention, the external processor unit is designed as a remote control for the hearing aid system. So are in addition to the o.g. Functions also combines functions for comfortable operation of the hearing aid system in a single device.
Zu den Schallfeld-Kennwerten, die zwischen wenigstens zwei Hörhilfegeräten eines Hörgerätesystems gemäß der Erfindung übertragen werden und auf deren Basis die Bestimmung von Parametern wenigstens einer Signalverarbeitungseinheit des Hörgerätesystems erfolgt, zählen insbesondere Kennwerte bezüglich:
- der Signalpegel,
- der Frequenzspektren,
- der Modulationsfrequenzen,
- der Modulationstiefen,
- der Rauschanteile sowie
- räumliche Kennwerte akustischer Signale des Schallfeldes.
- the signal level,
- the frequency spectra,
- the modulation frequencies,
- the modulation depths,
- the noise as well
- spatial characteristics of acoustic signals of the sound field.
Die räumlichen Kennwerte des Schallfeldes können ihrerseits in Kohärenz, Einfallsrichtungen von Störsignalen, Einfallsrichtung des Nutzsignals usw. unterteilt werden.The spatial characteristic values of the sound field can in turn be subdivided into coherence, directions of incidence of interference signals, direction of arrival of the useful signal, etc.
Zur Anpassung der Signalverarbeitungseinheit eines Hörhilfegerätes sieht eine Variante der Erfindung vor, in periodischen Zeitabständen Schallfeld-Kennwerte-zu generieren und zwischen Hörhilfegeräten des betreffenden Hörgerätesystems zu übertragen. Dadurch lässt sich erreichen, dass Hörhilfegeräte des Hörgerätesystems allenfalls für kurze Zeit in unterschiedlichen Hörprogrammen arbeiten.In order to adapt the signal processing unit of a hearing aid, a variant of the invention provides to generate sound field characteristic values at periodic intervals and to transmit them between hearing aid devices of the hearing aid system in question. This makes it possible to achieve that hearing aid devices of the hearing aid system at most work for a short time in different hearing programs.
Eine andere Variante sieht vor, dass wenn ein Hörhilfegerät eines Hörgerätesystems gemäß der Erfindung eine relevante Änderung von Schallfeld-Kennwerten registriert, ein Abgleich zwischen den Hörhilfegeräten des Hörgerätesystems erfolgt.Another variant provides that when a hearing aid device of a hearing aid system according to the invention registers a relevant change of sound field characteristics, a comparison between the hearing aid devices of the hearing aid system takes place.
Im einfachsten Fall erfolgt die Anpassung von Hörhilfegeräten des Hörgerätesystems jedoch durch manuelle Betätigung eines Bedienelementes des Hörgerätesystems durch den Hörgeräteträger. Dabei kann das hierfür vorgesehene Bedienelement auch auf einer Fernbedienung angeordnet sein.In the simplest case, however, the adaptation of hearing aid devices of the hearing device system takes place by manual actuation of a control element of the hearing device system by the hearing device wearer. In this case, the operating element provided for this purpose can also be arranged on a remote control.
Weitere Einzelheiten der Erfindung werden nachfolgend anhand eines Ausführungsbeispieles erläutert. Darin zeigen:
Figur 1 ein Hörgerätesystem mit zwei am Kopf tragbaren Hörgeräten und einer externen Prozessoreinheit,Figur 2 schematisch den Aufbau eines Hörhilfegerätes gemäß der Erfindung undFigur 3 schematisch den Aufbau der externen Prozessoreinheit.
- FIG. 1 shows a hearing aid system with two head-worn hearing aids and an external processor unit,
- Figure 2 schematically shows the structure of a hearing aid according to the invention and
- Figure 3 schematically shows the structure of the external processor unit.
Figur 1 zeigt als Ausführungsbeispiel den Aufbau eines binauralen Hörgerätesystems 1, 2, 3 mit zwei Hörgeräten 1 und 2 und einer externen Prozessoreinheit 3. Zwischen den beiden Hörgeräten und zwischen je einem Hörgerät und der externen Prozessoreinheit bestehen Signalpfade 4, 5 und 6, die im Ausführungsbeispiel bidirektional und drahtlos ausgeführt sind. Somit können innerhalb des Hörgerätesystems 1, 2, 3 Daten zwischen den Hörgeräten sowie zwischen je einem Hörgerät und der externen Prozessoreinheit ausgetauscht werden.FIG. 1 shows an exemplary embodiment of the construction of a binaural
In Figur 2 ist schematisch der interne Aufbau eines Hörgerätes 1 des Hörgerätesystems 1, 2, 3 gemäß Figur 1 veranschaulicht. Das Hörgerät 1 umfasst ein direktionales Mikrofon 10 mit veränderbarer Richtcharakteristik zum Aufnehmen eines akustischen Eingangssignals. Dieses ist einer Signalverarbeitungseinheit 11 zugeführt, in der eine Aufbereitung des Eingangssignals zur Anpassung an den Hörverlust eines Hörgerätesträgers erfolgt. Das Ausgangssignal der Signalverarbeitungseinheit 11 ist einem Endverstärker 12 und schließlich einem Hörer 13 zur Signalausgabe zugeführt.FIG. 2 schematically illustrates the internal structure of a
Ferner umfasst das dargestellte Hörgerät 1 eine Signalanalyseeinheit 14, in der aus dem Eingangssignal Kennparameter des Schallfeldes, in dem sich das Hörgerät 1 befindet, ermittelt werden. Diese Schallfeld-Kennwerte kennzeichnen Signalpegel, Frequenzspektren, Modulationsfrequenzen, Modulationstiefen, Rauschanteile, räumliche Kennwerte usw. akustischer Signale des Schallfeldes. Die räumlichen Kennwerte des Schallfeldes können ihrerseits die Kohärenz, Einfallsrichtungen von Störsignalen, die Einfallsrichtung des Nutzsignals usw. umfassen. Die so ermittelten Schallfeld-Kennwerte werden in einem Speicherbereich 15A eines Speichers 15 des Hörgerätes 1 abgelegt.Furthermore, the illustrated
Zur drahtlosen Signalübertragung zwischen dem Hörgerät 1 und dem weiteren Hörgerät 2 sowie der externen Prozessoreinheit 3 weist das Hörgerät 1 die Sende- und Empfangseinheit 16 auf. Über diese und den Signalpfad 18 werden die im Hörgerät 1 ermittelten Schallfeld-Kennwerte auf das Hörgerät 2 und die externe Prozessoreinheit 3 übertragen. Mittels der Sende- und Empfangseinheit 16 empfängt das Hörgerät seinerseits über den Signalpfad 18 die in dem zweiten Hörgerät 2 und der externen Prozessoreinheit 3 in analoger Weise ermittelten Schallfeld-Kennwerte. Diese werden im Ausführungsbeispiel in den Speicherbereichen 15B und 15C des Speichers 15 abgelegt. Alle drei Speicherbereiche 15A, 15B, 15C sind der Steuer- und Auswerteeinheit 17 zugeführt, die aus den Schallfeld-Kennwerten Parameter zur Steuerung der Signalverarbeitungseinheit 11 in Anpassung an das Schallfeld bestimmt.For wireless signal transmission between the
Zur Beurteilung des Schallfeldes und damit der Hörsituation liegen in dem Hörgerät 1 also sowohl die lokale Schallfeldinformation als auch die Information über das Schallfeld an den übrigen Auswerteorten vor. Auf diese Weise verfügt das Hörgerät 1 über eine umfassende Schallfeldinformation, die zur Steuerung der Übertragungsparameter der Signalverarbeitungseinheit 11 herangezogen wird. Wie bei herkömmlichen Hörgeräten kann diese Steuerung aber auch nur auf der Betrachtung der lokalen Schallfeld-Kennwerte beruhen. Vorteilhaft greift die Steuer- und Auswerteeinheit 17 allerdings auf mindestens die Schallfeld-Kennwerte beider Hörgeräte 1 und 2, besser noch auf die Schallfeld-Kennwerte an allen drei Auswerteorten zurück und variiert entsprechend die Parameter der Signalverarbeitungseinheit 11. Einzelne Hörgerätefunktionalitäten, für die bei binauraler Versorgung eine abgestimmte Wirkung beider Hörgeräte 1 und 2 notwendig ist, werden so synchronisiert. Mit Hilfe zweckmäßiger Algorithmen können auch bei unterschiedlichen Kennwerten zum Schallfeld passende Parameter ermittelt werden. Ferner erlauben die an verschiedenen Auswerteorten bestimmten Schallfeld-Kennwerte Aussagen bezüglich des Schallfeldes, beispielsweise über die Schallfeldgeometrie, die bei der Bestimmung von Kennwerten an nur einem Auswerteort gar nicht möglich wären.In order to assess the sound field and thus the hearing situation, both the local sound field information and the information about the sound field at the other evaluation locations are therefore present in the
Da innerhalb des Hörgerätesystems 1, 2, 3 lediglich Schallfeld-Kennwerte und nicht die an den einzelnen Orten aufgenommenen akustischen Signale übertragen werden, hält sich das zu übermittelnde Datenvolumen in Grenzen. Trotzdem ist eine sehr genaue Beurteilung des Schallfeldes sowie eine Synchronisation der Hörgeräte und deren Anpassung an das Schallfeld möglich.Since only sound field characteristic values and not the acoustic signals recorded at the individual locations are transmitted within the
Figur 3 zeigt den internen Aufbau der externen Prozessoreinheit 3 in Form einer Fernbedienung gemäß Figur 1. Auch diese weist ein Mikrofon 20 zur Signalaufnahme und eine Signalanalyseeinheit 21 zum Generieren von Schallfeld-Kennwerten auf, die in einem Betriebsmodus des Hörgerätesystems 1, 2, 3 über die Sende- und Empfangseinheit 23 und den Signalpfad 25 an die beiden Hörgeräte 1 und 2 im Hörgerätesystem weitergeleitet werden. In den beiden Hörgeräten 1 und 2 liegen somit jeweils die Schallfeld-Kennwerte vom Ort des Hörgerätes, vom Ort des jeweils anderen Hörgerätes sowie vom Ort der externen Prozessoreinheit 3 vor. Dadurch werden eine umfassende Schallfeld-Analyse und, da die Schallfeld-Kennwerte in beiden Hörgeräten 1 und 2 gleichermaßen vorhanden sind, die Synchronisation der beiden Hörgeräte ermöglicht.Figure 3 shows the internal structure of the
Für einen anderen Betriebsmodus des Hörgerätesystems 1, 2, 3 ist vorgesehen, dass die Schallfeld-Kennwerte aller drei Hörhilfegeräte auch in der externen Prozessoreinheit 3 zusammenlaufen. Hierfür ist diese mit einem Speicher 22, der in die Speicherbereiche 22A, 22B, 22C unterteilt ist, ausgestattet. Weil in der externen Prozessoreinheit 3 im Vergleich zu den Hörgeräten 1 und 2 mehr Platz für die Steuer- und Auswerteeinheit 24 zur Verfügung steht, ist diese entsprechend komplex ausgebildet, verfügt über eine höherer Prozessorleistung und ermöglicht daher eine umfangreichere Analyse der Schallfeld-Kennwerte zur Bestimmung der Hörsituation. Ist diese ermittelt, so wird in besagtem Betriebsmodus des Hörgerätesystems anstatt der Schallfeld-Kennwerte vom Ort der externen Prozessoreinheit 3 direkt ein Signal zur Kennzeichnung der Hörsituation von der Steuer- und Auswerteeinheit 24 über die Sende- und Empfangseinheit 23, den Signalpfad 25 (der sich aus den Signalpfaden 5 und 6 gemäß Figur 1 zusammensetzt) und die Sende- und Empfangseinheit 16 zu der Steuer- und Auswerteeinheit 17 der Hörgeräte 1 und 2 übermittelt, zur Anpassung der Signalverarbeitungseinheit 11 an diese Hörsituation.For another operating mode of the
Die gezeigten Komponenten der Hörgeräte bzw. der externen Prozessoreinheit können in analoger oder digitaler Schaltungstechnik ausgeführt sein. Ferner umfassen insbesondere die Signalanalyseeinheiten 14 und 21 sowie die Steuer- und Auswerteeinheiten 17 und 24 neuronale Strukturen und Fuzzy-Logik zur optimierten Bestimmung von Schallfeld-Kennwerten, der Hörsituation und Parametern der Signalverarbeitungseinheit 11.The illustrated components of the hearing aids or the external processor unit can be implemented in analog or digital circuit technology. Furthermore, in particular the
Claims (17)
- Method for operating a hearing aid system (1, 2, 3) having at least two hearing aid devices (1, 2, 3) between which a signal path (4, 5, 6, 18, 25) is provided and having at least one signal processing unit which can be adapted to different hearing situations, with acoustic field characteristics of an acoustic field being generated in a first hearing aid device (1) and a second hearing aid device (2), and with acoustic field characteristics being transmitted from the first hearing aid device (1) to the second hearing aid device (2) in order to adapt the signal processing unit of the second hearing aid device (2) to the acoustic field on the basis of the acoustic field characteristics generated in both hearing aid devices (1, 2).
- Method for operating a hearing aid system according to claim 1, wherein acoustic field characteristics are transmitted from the second hearing aid device (2) to the first hearing aid device (1) in order to adapt the signal processing unit (11) of the first hearing aid device (1) to the acoustic field by means of the acoustic field characteristics generated in both hearing aid devices (1, 2).
- Hearing aid system (1, 2, 3) having at least two hearing aid devices (1, 2, 3) between which a signal path (4, 5, 6, 18, 25) is provided, having at least two signal analysis units (14, 21) and having at least one signal processing unit (11), wherein acoustic field characteristics can be determined in the signal analysis unit (14) of a first hearing aid device (1) and the signal analysis unit of a second hearing aid device (2), and wherein the acoustic field characteristics of the first hearing aid device (1) can be transmitted to the second hearing aid device (2) via the signal path (4) in order to adapt the signal processing unit of the second hearing aid device (2) to the acoustic field by means of the acoustic field characteristics generated in both hearing aid devices (1, 2).
- Hearing aid system according to claim 3, wherein the first hearing aid device (1) comprises at least one transmitting unit and the second hearing aid device (2) comprises at least one receiving unit for wireless signal transmission between the hearing aid devices (1, 2).
- Hearing aid system according to claim 3 or 4, wherein the acoustic field characteristics of the second hearing aid device (2) can be transmitted to the first hearing aid device (1) via the signal path (4) in order to adapt the signal processing unit (11) of the first hearing aid device (1) to the acoustic field by means of the acoustic field characteristics generated in both hearing aid devices (1, 2).
- Hearing aid system according to claim 3 or 4, wherein at least one of the hearing aid devices is embodied as an external processor unit (3) and at least one of the hearing aid device [sic] is embodied as a hearing aid (1, 2) that can be worn at the head.
- Hearing aid system according to claim 6, wherein a plurality of hearing aids (1, 2) that can be worn at the head are provided, and acoustic field characteristics are transmitted between the hearing aids (1, 2) and the external processor unit (3).
- Hearing aid system according to claim 6 or 7, wherein the external processor unit (3) is embodied as a remote control for at least one hearing aid (1, 2).
- Hearing aid system according to one of the claims 1 to 8, wherein the acoustic field characteristics characterise signal levels of acoustic signals of the acoustic field.
- Hearing aid system according to one of the claims 1 to 9, wherein the acoustic field characteristics characterise frequency spectra of acoustic signals of the acoustic field.
- Hearing aid system according to one of the claims 1 to 10, wherein the acoustic field characteristics characterise modulation frequencies of acoustic signals of the acoustic field.
- Hearing aid system according to one of the claims 1 to 11, wherein the acoustic field characteristics characterise modulation depths of acoustic signals of the acoustic field.
- Hearing system according to one of the claims 1 to 12, wherein the acoustic field characteristics characterise noise components of acoustic signals of the acoustic field.
- Hearing aid system according to one of the claims 1 to 13, wherein the acoustic field characteristics comprise spatial acoustic field characteristics.
- Hearing aid system according to one of the claims 1 to 14, wherein acoustic field characteristics are transmitted between hearing aid devices (1, 2, 3) of the hearing aid system (1, 2, 3) at periodic time intervals.
- Hearing aid system according to one of the claims 1 to 14, wherein acoustic field characteristics are transmitted prior to modification of parameters of the signal processing unit (11) of at least one of the hearing aid devices (1, 2, 3) of the hearing aid system (1, 2, 3).
- Hearing aid system according to one of the claims 1 to 14, wherein acoustic field characteristics are transmitted between hearing aid devices (1, 2, 3) of the hearing aid system (1, 2, 3) after the actuation of a control element of the hearing aid system (1, 2, 3).
Applications Claiming Priority (3)
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| DE10048354 | 2000-09-29 | ||
| DE10048354A DE10048354A1 (en) | 2000-09-29 | 2000-09-29 | Method for operating a hearing aid system and hearing aid system |
| PCT/DE2001/003576 WO2002028143A2 (en) | 2000-09-29 | 2001-09-17 | Method for operating a hearing aid system and hearing aid system |
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| EP1360870A2 EP1360870A2 (en) | 2003-11-12 |
| EP1360870B1 true EP1360870B1 (en) | 2006-04-05 |
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| EP (1) | EP1360870B1 (en) |
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| DE (2) | DE10048354A1 (en) |
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2000
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- 2001-09-17 EP EP01982121A patent/EP1360870B1/en not_active Expired - Lifetime
- 2001-09-17 DK DK01982121T patent/DK1360870T3/en active
- 2001-09-17 US US10/381,155 patent/US7020296B2/en not_active Expired - Lifetime
- 2001-09-17 JP JP2002531787A patent/JP4868696B2/en not_active Expired - Lifetime
- 2001-09-17 CN CNB018166385A patent/CN100477816C/en not_active Expired - Lifetime
- 2001-09-17 WO PCT/DE2001/003576 patent/WO2002028143A2/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8483416B2 (en) | 2006-07-12 | 2013-07-09 | Phonak Ag | Methods for manufacturing audible signals |
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| DE50109463D1 (en) | 2006-05-18 |
| WO2002028143A2 (en) | 2002-04-04 |
| CN100477816C (en) | 2009-04-08 |
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| US7020296B2 (en) | 2006-03-28 |
| DE10048354A1 (en) | 2002-05-08 |
| JP2004535082A (en) | 2004-11-18 |
| WO2002028143A3 (en) | 2003-07-24 |
| EP1360870A2 (en) | 2003-11-12 |
| JP4868696B2 (en) | 2012-02-01 |
| US20040013280A1 (en) | 2004-01-22 |
| DK1360870T3 (en) | 2006-08-07 |
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