EP1744589B2 - Hearing device and corresponding method for ownvoices detection - Google Patents

Hearing device and corresponding method for ownvoices detection Download PDF

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Publication number
EP1744589B2
EP1744589B2 EP06116535.3A EP06116535A EP1744589B2 EP 1744589 B2 EP1744589 B2 EP 1744589B2 EP 06116535 A EP06116535 A EP 06116535A EP 1744589 B2 EP1744589 B2 EP 1744589B2
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Prior art keywords
voice
user
detection
microphone
sound
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German (de)
French (fr)
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EP1744589A2 (en
EP1744589B1 (en
EP1744589A3 (en
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Volkmar Hamacher
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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
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
    • 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
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/405—Arrangements for obtaining a desired directivity characteristic by combining a plurality of transducers

Definitions

  • the present invention relates to a hearing device, in particular a hearing aid, with a microphone for receiving ambient sound from the environment of the user. Moreover, the present invention relates to a corresponding method for operating a hearing device.
  • WO 03/073790 A1 is a device for detecting and distinguishing speech known. It is inserted in the ear canal and has an external microphone for detecting an ambient sound and an internal microphone for detecting a sound in the ear canal, which includes the own language. This voice commands can be given to the device.
  • JP 2003304599A a method of adjusting a hearing aid.
  • the amplification factor of the hearing aid is set as a function of an external sound level and as a function of an internal sound level in the ear canal.
  • the publication DE 33 25 031 C2 describes an infrared headphone with two microphones. Their signals are supplied to an amplifier in phase opposition, so that the transmission of one's own voice is avoided or suppressed.
  • the object of the present invention is thus to improve the automatic control of hearing devices in the presence of the user's own voice.
  • the eigenvoice detection device has a level analysis unit, with which the respective level of the two microphone signals is comparable and based on the level comparison, the presence of the user's own voice in the microphone signals can be determined.
  • the occlusion effect of the sound in the auditory canal can be exploited in an advantageous manner, after which the own voice in the auditory canal by the structure-borne sound transmission generates a significantly higher sound level than in front of the ear.
  • a hearing device can have an AGC device for automatic gain adjustment, which can be temporarily deactivated in the detection of the user's own voice or whose decay time can be temporarily shortened when the user's own voice is detected. This can be avoided in particular disturbances in the conversation with a quiet partner.
  • the hearing device may comprise a directional microphone, which is deactivated upon detection of the user's own voice.
  • a directional microphone which is deactivated upon detection of the user's own voice.
  • an "intelligent directional microphone" can also operate interference-free, even if the hearing aid wearer speaks himself.
  • Both the microphone processing device MV including BSS and intelligent directional microphone and the gain unit AGC can be controlled or influenced by the eigenvoice detection PA, ED, SG.

Description

Die vorliegende Erfindung betrifft eine Hörvorrichtung, insbesondere ein Hörgerät, mit einem Mikrofon zur Aufnahme eines Umgebungsschalls aus der Umgebung des Nutzers. Darüber hinaus betrifft die vorliegende Erfindung ein entsprechendes Verfahren zum Betreiben eines Hörgeräts.The present invention relates to a hearing device, in particular a hearing aid, with a microphone for receiving ambient sound from the environment of the user. Moreover, the present invention relates to a corresponding method for operating a hearing device.

Die eigene Stimme des Hörgeräteträgers kann in herkömmlichen Hörgeräten nicht von einer externen Schallquelle unterschieden werden. Dies kann bei verschiedenen Hörgerätealgorithmen zu Artefakten und Fehlverhalten führen, z. B.:

  1. a) Bei der automatischen Verstärkungsregelung (AGC: Automatic Gain Control) wird die Verstärkung bei hohen Schallpegeln automatisch reduziert. Ändert sich der Schallpegel mehrmals hintereinander sprunghaft, so würde auch die Verstärkung entsprechend stark variiert werden. Dies bedeutet, dass beispielsweise Umgebungs- oder Mikrofonrauschen abhängig vom Nutzschallpegel unterschiedlich verstärkt wird, was vom Hörgeräteträger als Pumpeffekt wahrgenommen wird. Zur Vermeidung dieser Pumpeffekte werden die AGC-Ausschwingzeiten, d. h. die Zeit bzw. Zeitkonstante zur Nachführung der Verstärkung, typischerweise relativ groß gewählt. Dies führt aber dazu, dass in einem Gespräch mit einem leiseren Gesprächspartner die relativ laute eigene Stimme (am Hörgerät gemessen!) die AGC in Übertragungsphasen zu niedrigen Verstärkungswerten veranlasst. Spricht nämlich der Gesprächspartner unmittelbar nachdem der Hörgeräteträger aufgehört hat zu sprechen, befindet sich die AGC in der Ausschwingphase und die Verstärkung ist entsprechend niedrig. Dies bedeutet, dass sich die Verstärkung bei den meist leiseren Sprachsignalen des Gesprächspartners nicht schnell genug erhöht, so dass möglicherwei se die ersten Silben oder Wörter aufgrund mangelnder Verstärkung nicht verstanden werden.
  2. b) Der Ansatz eines "intelligenten Richtmikrofons", das sich nur aktiviert, wenn eine Sprachquelle aus der 0°-Vornerichtung detektiert wird, scheitert daran, dass die eigene Stimme als 0°-Quelle detektiert wird und das Richtmikrofon unvorteilhaft auch bei einem seitlichen Gesprächspartner aktiviert wird.
  3. c) Blinde Quellentrennungsalgorithmen (BSS: Blind Source Separation) versuchen die in den Mikrofonsignalen vorliegenden Überlagerungen aus dem Nutzschall und verschiedenen Störsignalen mit statistischen Methoden zu trennen. Auch hier wird die eigene Stimme als separate Quelle identifiziert, was die Extraktion des tatsächlichen Nutzsignals, das meist ebenfalls ein Sprachsignal ist, stört.
The own voice of the hearing aid wearer can not be distinguished from an external sound source in conventional hearing aids. This can lead to artifacts and misconduct in various hearing aid algorithms, e.g. B .:
  1. a) In automatic gain control (AGC: Automatic Gain Control) the gain is automatically reduced at high sound levels. If the sound level changes sharply several times in succession, the amplification would also be varied accordingly. This means that, for example, environmental or microphone noise is amplified differently depending on the useful sound level, which is perceived by the hearing aid wearer as a pumping effect. To avoid these pumping effects, the AGC settling times, ie the time or time constant for tracking the gain, are typically chosen to be relatively large. However, this leads to the fact that in a conversation with a quieter conversation partner the relatively loud own voice (measured on the hearing aid!) Causes the AGC in transmission phases to low amplification values. If the other person talks immediately after the hearing aid wearer has stopped speaking, the AGC is in the decay phase and the gain is correspondingly low. This means that the amplification does not increase fast enough with the mostly quieter speech signals of the interlocutor, so that possibly the first syllables or words are not understood due to a lack of amplification.
  2. b) The approach of an "intelligent directional microphone", which only activates when a voice source from the 0 ° -Vornerichtung is detected, fails because the own voice is detected as 0 ° source and the directional microphone unfavorably even with a side partner is activated.
  3. c) blind source separation algorithms (BSS: Blind Source Separation) try to separate the present in the microphone signals superimpositions of the useful sound and various interference signals with statistical methods. Again, the own voice is identified as a separate source, which interferes with the extraction of the actual useful signal, which is also usually a voice signal.

Aus der Druckschrift EP 1 251 714 A1 ist ein digitales Hörhilfesystem bekannt, bei dem ein Okklusions-Sub-System eine Verstärkung der eigenen Sprache des Hörgerätenutzers im Ohrkanal kompensiert. Dabei wird ein von einem rückwärtigen Mikrofon empfangenes unerwünschtes Signal rückgekoppelt und von dem Nutzsignal subtrahiert.From the publication EP 1 251 714 A1 a digital hearing aid system is known in which an occlusion subsystem compensates for an amplification of the own speech of the hearing device user in the ear canal. In this case, a received from a rear microphone unwanted signal is fed back and subtracted from the useful signal.

Weiterhin ist aus der Druckschrift US 6 041 129 A ein Hörgerät bekannt, bei dem die eigene Sprache des Hörgerätenutzers verstärkt oder gedämpft wird. Hierbei wird der durch Knochenleitung übertragene Schall mit einem Beschleunigungsmesser oder Bewegungssensor detektiert.Furthermore, from the document US 6 041 129 A a hearing aid known in which the own language of the hearing device user is reinforced or attenuated. Here, the sound transmitted through bone conduction is detected with an accelerometer or motion sensor.

Aus der Druckschrift WO 03/073790 A1 ist ein Gerät zur Detektion und Unterscheidung von Sprache bekannt. Es wird in den Gehörgang eingesetzt und besitzt ein äußeres Mikrofon zum Detektieren eines Umgebungsschalls und ein inneres Mikrofon zum Detektieren eines Schalls im Gehörgang, welcher die eigene Sprache beinhaltet. Damit können Sprachkommandos an das Gerät gegeben werden.From the publication WO 03/073790 A1 is a device for detecting and distinguishing speech known. It is inserted in the ear canal and has an external microphone for detecting an ambient sound and an internal microphone for detecting a sound in the ear canal, which includes the own language. This voice commands can be given to the device.

Weiterhin offenbart die Druckschrift JP 2003304599A ein Einstellverfahren für ein Hörgerät. Der Verstärkungsfaktor des Hörgeräts wird in Abhängigkeit von einem externen Schallpegel und in Abhängigkeit von einem internen Schallpegel im Gehörgang eingestellt.Furthermore, the document discloses JP 2003304599A a method of adjusting a hearing aid. The amplification factor of the hearing aid is set as a function of an external sound level and as a function of an internal sound level in the ear canal.

Ferner beschreibt die Druckschrift WO 02/085063 A2 ein Anpassverfahren für ein Hörgerät. Dabei soll ein Okklusionseffekt beseitigt werden. Hierzu wird das Kompressionsverhältnis beispielsweise in einer Sprachsituation erhöht, wodurch die wahrgenommene Okklusion verringert wird.Furthermore, the document describes WO 02/085063 A2 a fitting procedure for a hearing aid. An occlusion effect should be eliminated. For this purpose, the compression ratio is increased, for example in a speech situation, whereby the perceived occlusion is reduced.

In der Druckschrift EP 1 523 219 A2 ist ein Verfahren zum Nachtrainieren und Betreiben eines Hörgeräts beschrieben. Dabei wird das Richtmikrofon auf diejenige Richtung gelenkt, aus der der maximale Nutzschall, ggf. die eigene Sprache, kommt.In the publication EP 1 523 219 A2 A method for training and operating a hearing aid is described. The directional microphone is directed to the direction from which the maximum useful sound, possibly the own language, comes.

Das Dokument US 2004/0202333 A1 offenbart ein Hörgerät mit Selbstdiagnose. Ausgangspunkt ist auch hier der Okklusionseffekt, bei dem die eigene Sprache im Gehörgang verstärkt wird. Ein Gehörgangsmikrofon nimmt den unerwünschten Schall auf und es wird damit ein entsprechendes Kompensationssignal erzeugt.The document US 2004/0202333 A1 discloses a hearing aid with self-diagnosis. The starting point here too is the occlusion effect, in which one's own speech is amplified in the auditory canal. An ear canal microphone picks up the unwanted sound and generates a corresponding compensation signal.

Schließlich beschreibt die Patentschrift US 6 526 148 B1 ein Verfahren zur Blindenquellentrennung für Spracherkennungszwecke. Es wird die interne Verzögerung zwischen den Mikrofonsignalen berechnet und zur Subtraktion der Mikrofonsignale genutzt.Finally, the patent specification describes US 6 526 148 B1 a method for blind source separation for speech recognition purposes. The internal delay between the microphone signals is calculated and used to subtract the microphone signals.

Die Druckschrift DE 33 25 031 C2 beschreibt einen Infrarot-Kopfhörer mit zwei Mikrofonen. Ihre Signale werden einem Verstärker gegenphasig zugeführt, so dass die Übertragung der eigenen Stimme vermieden oder unterdrückt wird.The publication DE 33 25 031 C2 describes an infrared headphone with two microphones. Their signals are supplied to an amplifier in phase opposition, so that the transmission of one's own voice is avoided or suppressed.

Ferner zeigt die Patentschrift DE 103 32 119 B3 ein im Ohr tragbares Hörhilfegerät mit einem zweiten Mikrofon und einem zweiten Hörer, welche in einem Ventilationskanal angeordnet sind. Das Signal des zweiten Hörers wird phasengedreht, um zu vermeiden, dass dem Gehör direkt Schall zugeführt wird.Furthermore, the patent shows DE 103 32 119 B3 a portable in the ear hearing aid with a second microphone and a second handset, which are arranged in a ventilation duct. The signal of the second listener is phase-rotated to avoid that Hearing directly sound is supplied.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, die automatische Steuerung von Hörvorrichtungen bei Präsenz der eigenen Stimme des Nutzers zu verbessern.The object of the present invention is thus to improve the automatic control of hearing devices in the presence of the user's own voice.

Erfindungsgemäß wird diese Aufgabe gelöst durch eine Hörvorrichtung nach Anspruch 1. Neben einem "normalen" Schallmikrofon im Gehörgang kann auch ein mit dem Hörgerätegehäuse verbundenes Vibrationsmikrofon (z. B. von innen eingeklebt) verwendet werden, das die eigene Stimme über Körperschallleitung bevorzugt aufnimmt.According to the invention, this object is achieved by a hearing device according to claim 1. In addition to a "normal" sound microphone in the ear canal, a vibration microphone connected to the hearing device housing (eg glued in from the inside) can be used, which preferably picks up its own voice via structure-borne sound conduction.

Weiterhin wird erfindungsgemäß bereitgestellt ein Verfahren nach Anspruch 5.Furthermore, a method according to claim 5 is provided according to the invention.

Der erfindungsgemäße Vorteil besteht darin, dass die Aktivität der eigenen Stimme permanent und sehr schnell durch den oben beschriebenen Detektionsansatz erfasst wird und diese Information dann direkt in die Steuerung von Algorithmen der Hörvorrichtung einbezogen werden kann. Dadurch werden die durch die eigene Stimme ausgelösten Artefakte und Fehlsteuerungen vermieden.The advantage according to the invention is that the activity of one's own voice is detected permanently and very quickly by the detection approach described above, and this information can then be included directly in the control of algorithms of the hearing device. This avoids the artifacts and spurious controls triggered by your own voice.

Vorzugsweise besitzt die Eigenstimmendetektionseinrichtung eine Pegelanalyseeinheit, mit der der jeweilige Pegel der beiden Mikrofonsignale vergleichbar und anhand des Pegelvergleichs das Vorhandensein der eigenen Stimme des Nutzers in den Mikrofonsignalen feststellbar ist. Dabei lässt sich in vorteilhafter Weise der Okklusionseffekt des Schalls im Gehörgang ausnutzen, wonach die eigene Stimme im Gehörgang durch die Körperschallübertragung einen deutlich höheren Schallpegel erzeugt als vor dem Ohr.Preferably, the eigenvoice detection device has a level analysis unit, with which the respective level of the two microphone signals is comparable and based on the level comparison, the presence of the user's own voice in the microphone signals can be determined. In this case, the occlusion effect of the sound in the auditory canal can be exploited in an advantageous manner, after which the own voice in the auditory canal by the structure-borne sound transmission generates a significantly higher sound level than in front of the ear.

Günstigerweise werden bei der Pegelanalyse nur Frequenzen unter 1 kHz berücksichtigt. Bei den niedrigen Frequenzen ist nämlich der Okklusionseffekt am deutlichsten ausgeprägt.Conveniently, only frequencies below 1 kHz are taken into account in the level analysis. Namely, at the low frequencies, the occlusion effect is most pronounced.

Die erfindungsgemäße Hörvorrichtung kann eine BSS-Einrichtung, mit der aus dem/den Mikrofonsignal(en) separate Quellen identifizierbar sind, und eine Signalverarbeitungseinrichtung, die von der BSS-Einrichtung steuerbar ist, aufweisen, wobei die Ansteuerung der Signalverarbeitungseinrichtung durch die BSS-Einrichtung zeitweise eingefroren wird, wenn die eigene Stimme des Nutzers detektiert wird. Dadurch wird die Extraktion des tatsächlichen Nutzsignals nicht durch die eigene Stimme gestört.The hearing device according to the invention may comprise a BSS device with which separate sources can be identified from the microphone signal (s), and a signal processing device which is controllable by the BSS device, wherein the control of the signal processing device by the BSS device intermittently is frozen when the user's own voice is detected. Thus, the extraction of the actual useful signal is not disturbed by your own voice.

Darüber hinaus kann eine erfindungsgemäße Hörvorrichtung eine AGC-Einrichtung zur automatischen Verstärkungseinstellung aufweisen, die bei der Detektion der eigenen Stimme des Nutzers vorübergehend deaktivierbar oder deren Ausschwingzeit bei der Detektion der eigenen Stimme des Nutzers vorübergehend verkürzbar ist. Damit lassen sich insbesondere Störungen bei der Unterhaltung mit einem leisen Gesprächspartner vermeiden.In addition, a hearing device according to the invention can have an AGC device for automatic gain adjustment, which can be temporarily deactivated in the detection of the user's own voice or whose decay time can be temporarily shortened when the user's own voice is detected. This can be avoided in particular disturbances in the conversation with a quiet partner.

Entsprechend einer weiteren Ausführungsform kann die Hörvorrichtung ein Richtmikrofon aufweisen, das bei Detektion der eigenen Stimme des Nutzers deaktiviert wird. Auf diese Weise lässt sich ein "intelligentes Richtmikrofon" auch dann störsicher betreiben, wenn der Hörgeräteträger selbst spricht.According to a further embodiment, the hearing device may comprise a directional microphone, which is deactivated upon detection of the user's own voice. In this way, an "intelligent directional microphone" can also operate interference-free, even if the hearing aid wearer speaks himself.

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.

Die Probleme mit der AGC, der BSS und dem intelligenten Richtmikrofon, die auftreten, wenn der Hörgeräteträger selbst spricht, werden erfindungsgemäß durch die Detektion der eigenen Stimme mit Hilfe eines separaten Ohrkanalmikrofons bzw. gehörgangsinternen Mikrofon MI gelöst. Dieses befindet sich gemäß der skizzenhaften Figur wie auch der Hörer des hier gewählten Hörgeräts im Gehörgang GG. Im vorliegenden Beispiel befinden sich zwei externe Mikrofone ME1 und ME2 außerhalb des Gehörgangs GG zur Aufnahme des Umgebungsschalls aus der Umgebung des Nutzers bzw. Hörgeräteträgers.The problems with the AGC, the BSS and the directional microphone which occur when the hearing aid wearer speaks for himself are solved according to the invention by the detection of his own voice with the aid of a separate ear canal microphone or hearing aid internal microphone MI. This is in accordance with the sketchy figure as well as the listener of the hearing aid selected here in the ear canal GG. In the present example, two external microphones ME1 and ME2 are located outside the ear canal GG for recording the ambient sound from the environment of the user or hearing device wearer.

Die Detektion der eigenen Stimme basiert auf dem permanenten Vergleich der von den externen Hörgeräte-Mikrofonen ME1 und ME2 und dem internen Ohrkanal-Mikrofon MI aufgenommen Signale. Im vorliegenden Fall erfolgt hierzu eine Pegelanalyse PA der Mikrofonsignale. Eine an die Pegelanalyse PA anschließende Eigenstimmendetektion ED liefert ein im einfachsten Fall binäres Signal, ob die eigene Stimme des Nutzers detektiert wurde. In Abhängigkeit davon erzeugt ein Signalgenerator SG ein Steuersignal, um eine Signalverarbeitungseinheit des Hörgeräts anzusteuern.The detection of one's own voice is based on the permanent comparison of the signals picked up by the external hearing aid microphones ME1 and ME2 and the internal ear canal microphone MI. In the present case, this is done by a level analysis PA of the microphone signals. An eigenvoice detection ED following the level analysis PA supplies a binary signal in the simplest case as to whether the user's own voice has been detected. In response, a signal generator SG generates a control signal to drive a signal processing unit of the hearing aid.

Im vorliegenden Fall besitzt das Hörgerät folgende Signalverarbeitungseinheiten: Eine Mikrofon-Array-Verarbeitungseinheit MV, z. B. BSS (adaptives Richtmikrofon), zur Aufnahme der Mikrofonsignale der externen Mikrofone ME1 und ME2, eine anschließende Rückkopplungsunterdrückungseinrichtung RU, eine anschließende Rauschreduktionseinheit RR und schließlich eine AGC-Einheit zur Erzeugung eines verstärkten Signals für den Hörer H.In the present case, the hearing aid has the following signal processing units: A microphone array processing unit MV, z. B. BSS (Adaptive Directional Microphone), for receiving the microphone signals of the external microphones ME1 and ME2, a subsequent feedback suppression device RU, a subsequent noise reduction unit RR and finally an AGC unit for generating an amplified signal for the listener H.

Sowohl die Mikrofonverarbeitungseinrichtung MV einschließlich BSS und intelligentem Richtmikrofon als auch die Verstärkungseinheit AGC sind durch die Eigenstimmendetektion PA, ED, SG ansteuerbar bzw. beeinflussbar.Both the microphone processing device MV including BSS and intelligent directional microphone and the gain unit AGC can be controlled or influenced by the eigenvoice detection PA, ED, SG.

Dies bedeutet, dass die Informationen über die Aktivität der eigenen Stimme direkt zur Steuerung der oben genannten Algorithmen verwendet werden. Beispielsweise ist so ein "Einfrieren" der BSS-Adaptionssteuerung möglich, wenn die eigene Stimme detektiert wird. Ferner ist aber auch ein "Einfrieren" der AGC oder eine temporäre Verkürzung der Ausschwingzeit möglich, wenn die eigene Stimme aktiv ist. Des Weiteren kann zur Realisierung eines "intelligenten Richtmikrofons" das Richtmikrofon bei Detektion der eigenen Stimme deaktiviert werden. Diese wäre ansonsten von einem 0°-Signal nicht unterscheidbar und das Richtmikrofon würde aktiviert werden.This means that the information about the activity of your own voice is used directly to control the above algorithms. For example, a "freezing" of the BSS adaptation control is possible when one's own voice is detected. Furthermore, a "freezing" of the AGC or a temporary shortening of the decay time is possible if your own voice is active. Furthermore, to implement an "intelligent directional microphone" the directional microphone can be deactivated when detecting one's own voice. This would otherwise be indistinguishable from a 0 ° signal and the directional microphone would to be activated.

Für die Detektion der eigenen Stimme wird im vorliegenden Beispiel eine Pegelanalyse durchgeführt. Diese lässt sich gegebenenfalls mit einer Laufzeitanalyse oder einer anderen Analyse kombinieren.For the detection of one's own voice, a level analysis is carried out in the present example. If necessary, this can be combined with a runtime analysis or another analysis.

Alle externen Signale erscheinen aufgrund der Dämpfungswirkung der Otoplastik bzw. des Hörgeräts im Fall von IdO-Geräten im Ohrkanal GG leiser als am externen Mikrofon ME1, ME2. Die für den jeweiligen Fall bekannte Hörgeräteverstärkung ist bei diesem Pegelvergleich zu berücksichtigen. Der Pegel der eigenen Stimme ist am Ohrkanalmikrofon aufgrund der direkten Einstrahlung per Knochenschallleitung in das abgeschlossene Gehörgangsvolumen (Okklusionseffekt) deutlich höher als bei Messung mit dem externen Hörgerätemikrofon ME1, ME2. Diese Pegelanalyse sollte sich auf die Frequenz unter 1 kHz beziehen, da hier der Okklusionseffekt am größten ist.All external signals appear quieter in the ear canal GG than in the external microphone ME1, ME2 due to the damping effect of the earmold or the hearing device in the case of IdO devices. The hearing aid gain known for the respective case must be taken into account in this level comparison. The level of one's own voice is significantly higher at the ear canal microphone due to the direct irradiation by bone conduction into the closed auditory canal volume (occlusion effect) than when measuring with the external hearing aid microphone ME1, ME2. This level analysis should refer to the frequency below 1 kHz, as the occlusion effect is greatest here.

Die vorliegende Erfindung kann auch für Head-Sets und andere mobile Hörvorrichtungen genutzt werden.The present invention can also be used for head sets and other mobile hearing devices.

Claims (6)

  1. Hearing apparatus having
    - a first microphone (ME1, ME2) for picking up ambient sound from the vicinity of the user,
    - a second microphone (MI) for picking up auditory channel sound in the auditory channel (GG) or on the auditory channel wall of the user, and
    - an own-voice detection device (PA, ED, SG) for detection of the user's own voice from the two microphone signals and for outputting a corresponding control signal,
    characterized by
    - one of the following devices:
    o a BSS device (MV), by means of which separate sources can be identified from the microphone signal or signals, and has a signal processing device, which can be controlled by the BSS device (MV), in which the drive of the signal processing device by the BSS device (MV) remains unchanged at times, when the user's own voice is detected, or
    o a directional microphone which can be deactivated on detection of the user's own voice, and
    - an AGC device (AGC) for automatic gain adjustment, which can be temporarily deactivated on detection of the user's own voice, or whose transient time can be temporarily shortened on detection of the user's own voice.
  2. Hearing apparatus according to Claim 1, in which the own-voice detection device (PA, ED, SG) has a level analysis device (PA) by means of which the respective levels of the two microphone signals can be compared, and the presence of the user's own voice in the microphone signals can be detected on the basis of the level comparison.
  3. Hearing apparatus according to Claim 2, in which only frequencies below 1 kHz are taken into account by the level analysis unit (PA).
  4. Method for operation of a hearing apparatus by
    - picking up a first sound signal from the vicinity of a user,
    - picking up a second sound signal from the auditory channel (GG) of the user,
    - detection of the user's own voice by analysis (PA, ED) of the two sound signals, and
    - control of the hearing apparatus as a function of the presence of the user's own voice,
    characterized in that
    - either
    o a BSS adaptation control of the hearing apparatus is frozen when the user's own voice is detected
    or
    o a directional microphone of the hearing apparatus is deactivated, when the user's own voice is detected, and
    - an AGC device (AGC) of the hearing apparatus for automatic gain adjustment is temporarily deactivated on detection of the user's own voice, or its transient time is temporarily shortened or detection of the user's own voice.
  5. Method according to Claim 4, in which the analysis (PA, ED) of the two sound signals includes a level comparison.
  6. Method according to Claim 5, in which only frequencies below 1 kHz are taken into account in the analysis (PA, ED).
EP06116535.3A 2005-07-11 2006-07-04 Hearing device and corresponding method for ownvoices detection Active EP1744589B2 (en)

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DE102005032274A DE102005032274B4 (en) 2005-07-11 2005-07-11 Hearing apparatus and corresponding method for eigenvoice detection

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EP (1) EP1744589B2 (en)
JP (1) JP2007028610A (en)
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EP1744589A2 (en) 2007-01-17
AU2006202797A1 (en) 2007-01-25
ES2359151T3 (en) 2011-05-18
JP2007028610A (en) 2007-02-01
CN1897765A (en) 2007-01-17
EP1744589B1 (en) 2011-02-02
EP1744589A3 (en) 2010-01-20
ES2359151T5 (en) 2014-07-29
DK1744589T3 (en) 2011-05-23
DE102005032274B4 (en) 2007-05-10
DE502006008842D1 (en) 2011-03-17
DK1744589T4 (en) 2014-07-28
US20070009122A1 (en) 2007-01-11
AU2006202797B2 (en) 2008-07-03
US7853031B2 (en) 2010-12-14
DE102005032274A1 (en) 2007-01-18
CN1897765B (en) 2012-10-03

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