EP1753264B1 - Hearing device and method for the determination of room acoustics - Google Patents

Hearing device and method for the determination of room acoustics Download PDF

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Publication number
EP1753264B1
EP1753264B1 EP06118364A EP06118364A EP1753264B1 EP 1753264 B1 EP1753264 B1 EP 1753264B1 EP 06118364 A EP06118364 A EP 06118364A EP 06118364 A EP06118364 A EP 06118364A EP 1753264 B1 EP1753264 B1 EP 1753264B1
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EP
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Prior art keywords
hearing aid
room
sound
hearing
acoustics
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Not-in-force
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EP06118364A
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German (de)
French (fr)
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EP1753264A1 (en
Inventor
Kristin Rohrseitz
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Sivantos GmbH
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Siemens Audioligische Technik GmbH
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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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest

Definitions

  • the present invention relates to a hearing aid with a sound output device for sonicating a user's hearing. Moreover, the present invention relates to a method for adjusting the hearing aid.
  • test mode it measures the transfer function of the human ear by means of an acoustic test program and then adjusts its own transfer function so that it takes into account the measured values.
  • normal operation the adapted transfer function attempts to compensate for the weaknesses of its wearer's hearing.
  • a disadvantage is that an adaptation to the surrounding room acoustics does not take place.
  • the publication WO 2004/097350 A2 describes a method for determining a dimension, volume or absorption coefficient of a room using an acoustic signal emitted from a specific source in the room. This requires complex optimization methods such as simulated annealing and genetic algorithms. These algorithms run in a separate system and the resulting results are optionally transmitted to the hearing aid for adjustment.
  • test mode the position of the unit with respect to the subject is determined via an ultrasonic transmission path.
  • normal operation signals of variable frequency and intensity are transmitted to the subject via an acoustic path in the audible range, which returns an evaluation of the signals heard.
  • the object of the present invention is therefore to provide a hearing aid whose signal processing properties can be adapted to the respective room acoustics.
  • a corresponding method for adapting a hearing aid to the room acoustics should be provided.
  • a hearing device comprising a first sound output device for sonicating a user, a second sound output device, which differs from the first sound output device, for outputting a test sound into a room in which the hearing device is located, the test sound is generated in the ultrasonic range, and a receiving device for receiving a response to the test sound from the room.
  • the hearing device further has an analysis device for determining a room acoustics or a corresponding room acoustics information as a function of the reception device received response.
  • This room acoustics information can be used internally or transmitted to the outside.
  • the signal processing device of the hearing device is also adjustable by the analysis device according to the determined room acoustics information.
  • the signal processing can be better adapted to the current acoustic situation for the hearing impaired.
  • a method for adapting a hearing device to room acoustics by outputting a test sound through a hearing device into a room in which the hearing device is located, the test sound being generated in the ultrasound area, receiving a response to the test sound from the room the hearing aid and determining information about the room acoustics from the answer.
  • the information about the room acoustics is determined internally by the hearing aid and based on this information, the signal processing of the hearing aid is set.
  • information about the room acoustics can thus be obtained by the hearing device. This can then be further processed internally or externally.
  • the hearing aid according to the invention has a signal generator for generating a test sound.
  • the test sound does not have to be generated by the usual signal processing device that is present in each hearing aid, so that processing capacity can be saved.
  • the signal generator may be arranged together with the signal processing device of the hearing device on a single electronic chip. This reduces the manufacturing costs for electronics of the entire hearing aid.
  • the generation of the test sound in the ultrasonic range has the advantage that for measuring the room acoustics no audible sound is used, which can be perceived by the user of the hearing aid.
  • the second sound output device of the hearing device according to the invention may have a membrane speaker.
  • a standard component element can be used to generate the test sound.
  • the illustrated hearing aid HG has a signal generator and signal analyzer GA.
  • a loudspeaker LS is connected, which is arranged on the surface of the hearing aid housing GH.
  • the signal generator GA and the loudspeaker LS thus constitute an acoustic signal transmitter, which is installed in the hearing device or its housing GH and is suitable for emitting an acoustic test signal in the ultrasonic range.
  • the sound emitted by the loudspeaker LS reflects on the walls and objects of a room and thus transforms into a room response which can be recorded by a microphone M of the hearing aid HG.
  • This microphone M may be a conventional hearing aid microphone, but also a microphone provided specifically for recording room responses for determining the room acoustics.
  • the recorded spatial response is electrically converted in the microphone M and sent to the signal generator and analyzer GA. There it is examined in terms of room acoustics peculiarities, for example, whether the room is very echoing. The analysis then leads to room acoustics information, with which different room acoustics can be divided into different classes.
  • the hearing aid-internal signal processing SV is activated. This means that the signal processing algorithm is set according to the room acoustics. Consequently, the signal processing in the hearing aid HG is optimized for the current room acoustics. This increases the quality of the automatic adjustment of the hearing aid.
  • the acquisition of the room acoustics information and an automatic adaptation based thereon can be used not only for hearing aids but also for other hearing devices such as, for example, headsets, headphones and the like (which, however, is not claimed here).

Abstract

A first sound output unit exposes the hearing of the user to sound. A second sound output unit comprised of a signal generator/signal analyzer (GA) and a loudspeaker (LS) transmits an ultrasonic test signal to the surrounding area. A microphone (M) receives an answer to the test signal. An independent claim is also included for a room acoustic determining method.

Description

Die vorliegende Erfindung betrifft ein Hörgerät, mit einer Schallausgabeeinrichtung zum Beschallen des Gehörs eines Nutzers. Darüber hinaus betrifft die vorliegende Erfindung ein Verfahren zur Anpassung des Hörgeräts.The present invention relates to a hearing aid with a sound output device for sonicating a user's hearing. Moreover, the present invention relates to a method for adjusting the hearing aid.

Räumlichkeiten, in denen sich ein Schwerhöriger befindet, haben sehr häufig einen wichtigen Einfluss auf den Nutzen von Hörgeräten. So kann ein Hörgeräteträger beispielsweise in einem hallenden Raum von bestimmten Signalverarbeitungsalgorithmen stärker profitieren, als in einem sehr kleinen Raum. Das Problem liegt also darin, die für eine bestimmte Raumakustik am besten geeignete Signalverarbeitung auszuwählen.Rooms in which a hearing-impaired person is very often have an important influence on the use of hearing aids. For example, a hearing aid wearer can benefit more from certain signal processing algorithms in an echoing room than in a very small space. So the problem lies in choosing the most suitable signal processing for a specific room acoustics.

So weit wie möglich wird bisweilen dieses Problem beispielsweise durch den Einsatz eines Klassifikators gelöst. Dabei wird allerdings nur die akustische Situation, also z. B. Musik oder Sprache in Störlärm, ausgewertet. Die Raumakustik als solche wird hierbei nicht berücksichtigt. Es besteht jedoch ein fundamentaler Unterschied, ob beispielsweise Musik in einem kleinen Raum oder in einer großen Halle gehört wird.As far as possible, this problem is sometimes solved, for example, by the use of a classifier. However, only the acoustic situation, ie z. As music or speech in noise, evaluated. The room acoustics as such is not taken into account here. However, there is a fundamental difference between listening to music in a small room or in a large hall, for example.

Die Druckschrift US-A-4 471 171 beschreibt ein adaptives Hörgerät. Dieses hat zwei Arbeitsmodi: Test- und Normal-Betrieb. Im Testbetrieb vermisst es die Übertragungsfunktion des menschlichen Ohrs mittels eines akustischen Testprogramms und passt anschließend die eigene Übertragungsfunktion so an, dass es den gemessenen Werten Rechnung trägt. Im Normalbetrieb versucht die angepasste Übertragungsfunktion die Schwächen des Gehörs seines Trägers zu kompensieren. Ein Nachteil ist, dass eine Anpassung an die umgebende Raumakustik nicht statt findet.The publication U.S.-A-4,471,171 describes an adaptive hearing aid. This has two working modes: test and normal operation. In test mode, it measures the transfer function of the human ear by means of an acoustic test program and then adjusts its own transfer function so that it takes into account the measured values. In normal operation, the adapted transfer function attempts to compensate for the weaknesses of its wearer's hearing. A disadvantage is that an adaptation to the surrounding room acoustics does not take place.

Die Druckschrift WO 2004/097350 A2 beschreibt ein Verfahren zur Ermittlung einer Dimension, eines Volumens oder eines Absorptionskoeffizienten eines Raums mithilfe eines akustischen Signals, das von einer speziellen Quelle in dem Raum ausgesandt wird. Dazu sind komplexe Optimierungsmethoden wie Simulated Annealing und Genetische Algorithmen erforderlich. Diese Algorithmen laufen in einem separaten System ab und die resultierenden Ergebnisse werden gegebenenfalls zur Einstellung eines Hörgeräts an dieses übertragen.The publication WO 2004/097350 A2 describes a method for determining a dimension, volume or absorption coefficient of a room using an acoustic signal emitted from a specific source in the room. This requires complex optimization methods such as simulated annealing and genetic algorithms. These algorithms run in a separate system and the resulting results are optionally transmitted to the hearing aid for adjustment.

Die Druckschrift WO 01/022777 A1 beschreibt eine tragbare Einheit, die von einer Person genutzt werden kann, um ihr Gehör zu testen. Dazu sind zwei Arbeitsmodi verfügbar: Test- und Normal-Betrieb. Im Testbetrieb wird, über eine Ultraschall-Übertragungsstrecke, die Position der Einheit gegenüber der Testperson ermittelt. Im Normalbetrieb werden, über eine akustische Strecke im hörbaren Bereich, Signale mit variabler Frequenz und Intensität an die Testperson übertragen, die eine Bewertung der gehörten Signale zurückgibt.The publication WO 01/022777 A1 describes a portable unit that can be used by a person to test their hearing. There are two working modes available for this: test and normal operation. In test mode, the position of the unit with respect to the subject is determined via an ultrasonic transmission path. In normal operation, signals of variable frequency and intensity are transmitted to the subject via an acoustic path in the audible range, which returns an evaluation of the signals heard.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, ein Hörgerät bereitzustellen, dessen dessen Signalverarbeitungseigenschaften an die jeweilige Raumakustik anpassbar sind. Darüber hinaus soll ein entsprechendes Verfahren zur Anpassung eines Hörgeräts an die Raumakustik bereitgestellt werden.The object of the present invention is therefore to provide a hearing aid whose signal processing properties can be adapted to the respective room acoustics. In addition, a corresponding method for adapting a hearing aid to the room acoustics should be provided.

Erfindungsgemäß wird diese Aufgabe gelöst durch ein Hörgerät, umfassend eine erste Schallausgabeeinrichtung zum Beschallen des Gehörs eines Nutzers, eine zweite Schallausgabeeinrichtung, die sich von der ersten Schallausgabeeinrichtung unterscheidet, zum Ausgeben eines Testschalls in einen Raum, in dem sich das Hörgerät befindet, wobei der Testschall im Ultraschallbereich erzeugt wird, und eine Empfangseinrichtung zum Empfangen einer Antwort auf den Testschall aus dem Raum.According to the invention, this object is achieved by a hearing device comprising a first sound output device for sonicating a user, a second sound output device, which differs from the first sound output device, for outputting a test sound into a room in which the hearing device is located, the test sound is generated in the ultrasonic range, and a receiving device for receiving a response to the test sound from the room.

Das Hörgerät weist ferner eine Analyseeinrichtung zum Ermitteln einer Raumakustik bzw. einer entsprechenden Raumakustikinformation in Abhängigkeit von der in der Empfangseinrichtung empfangenen Antwort auf. Diese Raumakustikinformation kann intern genutzt oder nach außen übertragen werden. Die Signalverarbeitungseinrichtung des Hörgeräts ist darüber hinaus durch die Analyseeinrichtung entsprechend der ermittelten Raumakustikinformation einstellbar. In vorteilhafter Weise kann somit die Signalverarbeitung besser an die aktuelle akustische Situation für den Schwerhörigen angepasst werden.The hearing device further has an analysis device for determining a room acoustics or a corresponding room acoustics information as a function of the reception device received response. This room acoustics information can be used internally or transmitted to the outside. The signal processing device of the hearing device is also adjustable by the analysis device according to the determined room acoustics information. Advantageously, thus the signal processing can be better adapted to the current acoustic situation for the hearing impaired.

Des Weiteren wird erfindungsgemäß ein Verfahren bereitgestellt zur Anpassung eines Hörgeräts an die Raumakustik mittels Ausgeben eines Testschalls durch ein Hörgerät in einen Raum, in dem sich das Hörgerät befindet, wobei der Testschall im Ultraschallbereich erzeugt wird, Empfangen einer Antwort auf den Testschall aus dem Raum durch das Hörgerät und Bestimmen einer Information über die Raumakustik aus der Antwort. Die Information über die Raumakustik wird durch das Hörgerät intern bestimmt und aufgrund dieser Information wird die Signalverarbeitung des Hörgeräts eingestellt.Furthermore, according to the invention, a method is provided for adapting a hearing device to room acoustics by outputting a test sound through a hearing device into a room in which the hearing device is located, the test sound being generated in the ultrasound area, receiving a response to the test sound from the room the hearing aid and determining information about the room acoustics from the answer. The information about the room acoustics is determined internally by the hearing aid and based on this information, the signal processing of the hearing aid is set.

In vorteilhafter Weise kann somit durch das Hörgerät eine Information über die Raumakustik gewonnen werden. Diese lässt sich dann intern oder extern weiterverarbeiten.In an advantageous manner, information about the room acoustics can thus be obtained by the hearing device. This can then be further processed internally or externally.

Vorzugsweise besitzt das erfindungsgemäße Hörgerät einen Signalgenerator zum Erzeugen eines Testschalls. Damit muss der Testschall nicht über die übliche Signalverarbeitungseinrichtung, die in jedem Hörgerät vorhanden ist, erzeugt werden, so dass Verarbeitungskapazität eingespart werden kann.Preferably, the hearing aid according to the invention has a signal generator for generating a test sound. Thus, the test sound does not have to be generated by the usual signal processing device that is present in each hearing aid, so that processing capacity can be saved.

Der Signalgenerator kann zusammen mit der Signalverarbeitungseinrichtung des Hörgeräts auf einem einzigen Elektronikchip angeordnet sein. Dadurch mindern sich die Herstellungskosten für Elektronik des gesamten Hörgeräts.The signal generator may be arranged together with the signal processing device of the hearing device on a single electronic chip. This reduces the manufacturing costs for electronics of the entire hearing aid.

Das Erzeugen des Testschalls im Ultraschallbereich hat den Vorteil, dass zum Ausmessen der Raumakustik kein hörbarer Schall verwendet wird, der vom Nutzer des Hörgeräts wahrgenommen werden kann.The generation of the test sound in the ultrasonic range has the advantage that for measuring the room acoustics no audible sound is used, which can be perceived by the user of the hearing aid.

Die zweite Schallausgabeeinrichtung des erfindungsgemäßen Hörgeräts kann einen Membranlautsprecher aufweisen. Damit kann zur Erzeugung des Testschalls ein Standardbauteilelement verwendet werden.The second sound output device of the hearing device according to the invention may have a membrane speaker. Thus, a standard component element can be used to generate the test sound.

Die vorliegende Erfindung wird nun anhand der beigefügten Zeichnung näher erläutert, die ein Prinzipschaltbild eines erfindungsgemäßen Hörgeräts zeigt.The present invention will now be explained in more detail with reference to the accompanying drawing, which shows a schematic diagram of a hearing aid according to the invention.

Das nachfolgend näher geschilderte Ausführungsbeispiel stellt eine bevorzugte Ausführungsform der vorliegenden Erfindung dar.The embodiment described in more detail below represents a preferred embodiment of the present invention.

Gemäß der schematischen Skizze der beigefügten FIG weist das dargestellte Hörgerät HG einen Signalgenerator und Signalanalysator GA auf. An diesen Signalgenerator und -analysator GA ist ein Lautsprecher LS angeschlossen, der an der Oberfläche des Hörgerätegehäuses GH angeordnet ist. Der Signalgenerator GA und der Lautsprecher LS stellen somit einen akustischen Signalgeber dar, der in das Hörgerät bzw. dessen Gehäuse GH eingebaut ist und sich zur Abgabe eines akustischen Testsignals im Ultraschallbereich eignet.According to the schematic sketch of the attached FIG, the illustrated hearing aid HG has a signal generator and signal analyzer GA. To this signal generator and analyzer GA a loudspeaker LS is connected, which is arranged on the surface of the hearing aid housing GH. The signal generator GA and the loudspeaker LS thus constitute an acoustic signal transmitter, which is installed in the hearing device or its housing GH and is suitable for emitting an acoustic test signal in the ultrasonic range.

Der vom Lautsprecher LS abgestrahlte Schall reflektiert an den Wänden und Gegenständen eines Raums und wandelt sich so zu einer Raumantwort, die von einem Mikrofon M des Hörgeräts HG aufgenommen werden kann. Dieses Mikrofon M kann ein übliches Hörgerätemikrofon, aber auch ein speziell für die Aufnahme von Raumantworten zur Bestimmung der Raumakustik bereitgestelltes Mikrofon sein. Die aufgenommene Raumantwort wird in dem Mikrofon M elektrisch gewandelt und zu dem Signalgenerator und -analysator GA geschickt. Dort wird sie im Hinblick auf raumakustische Besonderheiten, beispielsweise dahingehend, ob der Raum sehr hallend ist, untersucht. Die Analyse führt dann zu einer Raumakustikinformation, mit der sich verschiedene Raumakustiken gegebenenfalls in verschiedene Klassen einteilen lassen.The sound emitted by the loudspeaker LS reflects on the walls and objects of a room and thus transforms into a room response which can be recorded by a microphone M of the hearing aid HG. This microphone M may be a conventional hearing aid microphone, but also a microphone provided specifically for recording room responses for determining the room acoustics. The recorded spatial response is electrically converted in the microphone M and sent to the signal generator and analyzer GA. There it is examined in terms of room acoustics peculiarities, for example, whether the room is very echoing. The analysis then leads to room acoustics information, with which different room acoustics can be divided into different classes.

Mit der gewonnen Raumakustikinformation bzw. Raumakustikklasse wird die hörgeräteinterne Signalverarbeitung SV angesteuert. Dies bedeutet, dass der Signalverarbeitungsalgorithmus entsprechend der Raumakustik eingestellt wird. Folglich wird die Signalverarbeitung im Hörgerät HG für die aktuelle Raumakustik optimiert. Dadurch steigert sich die Qualität der automatischen Anpassung des Hörgeräts.With the room acoustics information or room acoustics class gained, the hearing aid-internal signal processing SV is activated. This means that the signal processing algorithm is set according to the room acoustics. Consequently, the signal processing in the hearing aid HG is optimized for the current room acoustics. This increases the quality of the automatic adjustment of the hearing aid.

Die Gewinnung der Raumakustikinformation und eine darauf basierende automatische Anpassung kann nicht nur für Hörgeräte, sondern auch für andere Hörvorrichtungen wie beispielsweise Headsets, Kopfhörer und dergleichen verwendet werden (was hier jedoch nicht beansprucht wird).The acquisition of the room acoustics information and an automatic adaptation based thereon can be used not only for hearing aids but also for other hearing devices such as, for example, headsets, headphones and the like (which, however, is not claimed here).

Claims (5)

  1. Hearing aid (HG) comprising
    - a first sound output device for radiating sound to the hearing of a user,
    - a second sound output device (GA, LS) which is different from the first sound output device and serves to output a test sound into a room in which the hearing aid is located, wherein said test sound is generated in the ultrasonic range,
    - a receiving device (M) for receiving a response to the test sound from the room, and
    - an analysis device (GA) for determining information about room acoustics as a function of the response received in the receiving device (M), wherein
    - the signal processing device (SV) of the hearing aid can be adjusted by the analysis device (GA) in accordance with the determined information.
  2. Hearing aid according to claim 1 which has a signal generator (GA) for the purpose of generating a test sound.
  3. Hearing aid according to claim 2, wherein the signal generator (GA) is arranged on an electronics chip together with a signal processing device (SV) of the hearing aid.
  4. Hearing aid according to one of the preceding claims, wherein the second sound output device (GA, LS) comprises a membrane loudspeaker.
  5. Method for adjusting a hearing aid to the acoustics of a room, wherein
    - a test sound is output by means of a hearing aid (HG) into a room in which the hearing aid is located, with the test sound being generated in the ultrasonic range,
    - a response to the test sound from the room is received by the hearing aid, and
    - information about the acoustics of the room is determined from the response, wherein
    - the information about the room acoustics is determined internally by the hearing aid, and
    - the signal processing of the hearing aid is adjusted based on the information about the room acoustics.
EP06118364A 2005-08-10 2006-08-03 Hearing device and method for the determination of room acoustics Not-in-force EP1753264B1 (en)

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EP1753264A1 (en) 2007-02-14
DE102005037895B3 (en) 2007-03-29
ATE410903T1 (en) 2008-10-15
US20070036365A1 (en) 2007-02-15
DE502006001722D1 (en) 2008-11-20
US7916881B2 (en) 2011-03-29
DK1753264T3 (en) 2009-01-26

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