EP1744589A2 - 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
EP1744589A2
EP1744589A2 EP06116535A EP06116535A EP1744589A2 EP 1744589 A2 EP1744589 A2 EP 1744589A2 EP 06116535 A EP06116535 A EP 06116535A EP 06116535 A EP06116535 A EP 06116535A EP 1744589 A2 EP1744589 A2 EP 1744589A2
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Prior art keywords
user
voice
microphone
detection
sound
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German (de)
French (fr)
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EP1744589A3 (en
EP1744589B2 (en
EP1744589B1 (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.
  • 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 patent shows DE 103 32 119 B3 an intraoperable hearing aid with a second microphone and a second handset, which are arranged in a ventilation channel.
  • the signal of the second listener is phase-rotated to avoid sound being directly applied to the ear.
  • 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.
  • a hearing device in particular a hearing aid, having a first microphone for recording ambient sound from the environment of the user, a second microphone for recording auditory canal sound in the auditory canal or at the auditory canal wall of the user and an eigenvoice detection device for detecting one's own voice User from the two microphone signals and to output a corresponding control signal.
  • a vibration microphone connected to the hearing device housing (eg, glued in from the inside) can also be used, which preferably picks up its own voice via structure-borne sound conduction.
  • the invention provides a method for operating a hearing device by recording a first sound signal from the surroundings of a user, recording a second sound signal from the user's auditory canal, detecting the user's own voice by analyzing the two sound signals and controlling the hearing device as a function of the presence the user's own voice.
  • 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.
  • 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.
  • the hearing device 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a signal generator SG generates a control signal to drive a signal processing unit of the hearing aid.
  • 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 a AGC unit for generating an amplified signal for the listener H.
  • a microphone array processing unit MV z. B. BSS (adaptive directional microphone)
  • MV microphone array processing unit
  • z. B. BSS adaptive directional microphone
  • 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.
  • a level analysis is carried out in the present example. If necessary, this can be combined with a runtime analysis or another analysis.
  • the present invention can also be used for head sets and other mobile hearing devices.

Abstract

The aid has two microphones (ME1, ME2) comprising an audio input for picking up ambient sound from a vicinity of a user and auditory channel sound in an auditory channel (GG) of the user. An own-voice detection device (ED) detects the user`s own voice of the microphones signals. A blind source separation (BSS) device identifies separate sources from the microphone signals. An automatic gain control (AGC) device is temporarily deactivated based on the detection of the user`s own voice. A directional microphone is deactivated based on the detection of the user`s own voice. An independent claim is also included for a method for operating a hearing apparatus.

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.:

  • 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.
  • 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.
  • 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 .:
  • 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 gain does not increase fast enough with the mostly quieter speech signals of the interlocutor, so that possible two the first syllables or words are not understood due to lack of reinforcement.
  • 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.
  • 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.

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 an intraoperable hearing aid with a second microphone and a second handset, which are arranged in a ventilation channel. The signal of the second listener is phase-rotated to avoid sound being directly applied to the ear.

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, insbesondere Hörgerät, mit einem ersten Mikrofon zur Aufnahme eines Umgebungsschalls aus der Umgebung des Nutzers, einem zweiten Mikrofon zur Aufnahme eines Gehörgangsschalls im Gehörgang oder an der Gehörgangswand des Nutzers und einer Eigenstimmendetektionseinrichtung zur Detektion der eigenen Stimme des Nutzers aus den beiden Mikrofonsignalen und zur Ausgabe eines entsprechenden Steuersignals. 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, in particular a hearing aid, having a first microphone for recording ambient sound from the environment of the user, a second microphone for recording auditory canal sound in the auditory canal or at the auditory canal wall of the user and an eigenvoice detection device for detecting one's own voice User from the two microphone signals and to output a corresponding control signal. 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 also be used, which preferably picks up its own voice via structure-borne sound conduction.

Weiterhin wird erfindungsgemäß bereitgestellt ein Verfahren zum Betreiben einer Hörvorrichtung durch Aufnehmen eines ersten Schallsignals aus der Umgebung eines Nutzers, Aufnehmen eines zweiten Schallsignals aus dem Gehörgang des Nutzers, Detektieren der eigenen Stimme des Nutzers durch Analyse der beiden Schallsignale und Steuern der Hörvorrichtung in Abhängigkeit des Vorhandenseins der eigenen Stimme des Nutzers.Furthermore, the invention provides a method for operating a hearing device by recording a first sound signal from the surroundings of a user, recording a second sound signal from the user's auditory canal, detecting the user's own voice by analyzing the two sound signals and controlling the hearing device as a function of the presence the user's own voice.

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 a 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 realize 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 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 (10)

Hörvorrichtung mit - einem ersten Mikrofon (ME1, ME2) zur Aufnahme eines Umgebungsschalls aus der Umgebung des Nutzers,
gekennzeichnet durch - ein zweites Mikrofon (MI) zur Aufnahme eines Gehörgangsschalls im Gehörgang (GG) oder an der Gehörgangswand des Nutzers und - eine Eigenstimmendetektionseinrichtung (PA, ED, SG) zur Detektion der eigenen Stimme des Nutzers aus den beiden Mikrofonsignalen und zur Ausgabe eines entsprechenden Steuersignals. Hearing device with a first microphone (ME1, ME2) for recording ambient sound from the environment of the user,
marked by - A second microphone (MI) for recording a sound in the auditory canal (GG) or on the auditory canal wall of the user and - An eigenvoice detection device (PA, ED, SG) for detecting the user's own voice from the two microphone signals and for outputting a corresponding control signal. Hörvorrichtung nach Anspruch 1, wobei die Eigenstimmendetektionseinrichtung (PA, ED, SG) eine Pegelanalyseeinrichtung (PA) aufweist, 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.Hearing apparatus according to claim 1, wherein the eigenvoice detection means (PA, ED, SG) comprises a level analysis device (PA) 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. Hörvorrichtung nach Anspruch 2, wobei von der Pegelanalyseeinheit (PA) nur Frequenzen unter 1 kHz berücksichtigt werden.Hearing apparatus according to claim 2, wherein the level analysis unit (PA) only frequencies below 1 kHz are taken into account. Hörvorrichtung nach einem der vorhergehenden Ansprüche, die eine BSS-Einrichtung (MV), mit der aus dem/den Mikrofonsignal(en) separate Quellen identifizierbar sind, und eine Signalsverarbeitungseinrichtung, die von der BSS-Einrichtung (MV) steuerbar ist, aufweist, wobei die Ansteuerung der Signalverarbeitungseinrichtung durch die BSS-Einrichtung (MV) zeitweise unverändert bleibt, wenn die eigene Stimme des Nutzers detektiert wird.Hearing apparatus according to one of the preceding claims, comprising a BSS device (MV), with which from the microphone signal (s) separate sources are identifiable, and a signal processing means which is controllable by the BSS device (MV), wherein the control of the signal processing device by the BSS device (MV) temporarily remains unchanged when the user's own voice is detected. Hörvorrichtung nach einem der vorhergehenden Ansprüche, die eine AGC-Einrichtung (AGC) zur automatischen Verstärkungseinstellung aufweist, die bei Detektion der eigenen Stimme des Nutzers vorübergehend deaktivierbar oder deren Ausschwingzeit bei Detektion der eigenen Stimme des Nutzers vorübergehend verkürzbar ist.Hearing apparatus according to one of the preceding claims, comprising automatic gain adjustment AGC means (AGC) which are temporarily deactivatable upon detection of the user's own voice Decay time on detection of the user's own voice is temporarily shortened. Hörvorrichtung nach einem der vorhergehenden Ansprüche, die ein Richtmikrofon aufweist, das bei Detektion der eigenen Stimme des Nutzers deaktivierbar ist.Hearing apparatus according to one of the preceding claims, comprising a directional microphone which can be deactivated upon detection of the user's own voice. Verfahren zum Betreiben einer Hörvorrichtung durch - Aufnehmen eines ersten Schallsignals aus der Umgebung eines Nutzers,
gekennzeichnet durch - Aufnehmen eines zweiten Schallsignals aus dem Gehörgang (GG) des Nutzers, - Detektieren der eigenen Stimme des Nutzers durch Analyse (PA, ED) der beiden Schallsignale und - Steuern der Hörvorrichtung in Abhängigkeit des Vorhandenseins der eigenen Stimme des Nutzers. A method for operating a hearing device Recording a first sound signal from a user's environment,
marked by Recording a second sound signal from the auditory canal (GG) of the user, - Detecting the user's own voice by analysis (PA, ED) of the two sound signals and - controlling the hearing device depending on the presence of the user's own voice. Verfahren nach Anspruch 7, wobei die Analyse (PA, ED) der beiden Schallsignale einen Pegelvergleich beinhaltet.The method of claim 7, wherein the analysis (PA, ED) of the two sound signals includes a level comparison. Verfahren nach Anspruch 8, wobei nur Frequenzen unter 1 kHz bei der Analyse (PA, ED) berücksichtigt werden.The method of claim 8, wherein only frequencies below 1 kHz are taken into account in the analysis (PA, ED). Verfahren nach einem der Ansprüche 7 bis 9, wobei die Adaption einer Einrichtung (MV, AGC) der Hörvorrichtung beim Vorhandensein der eigenen Stimme in den Schallsignalen unverändert bleibt.Method according to one of claims 7 to 9, wherein the adaptation of a device (MV, AGC) of the hearing device remains unchanged in the presence of one's own voice in the sound signals.
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