EP2592850A1 - Activation et désactivation automatiques d'un système auditif binaural - Google Patents

Activation et désactivation automatiques d'un système auditif binaural Download PDF

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Publication number
EP2592850A1
EP2592850A1 EP12190342.1A EP12190342A EP2592850A1 EP 2592850 A1 EP2592850 A1 EP 2592850A1 EP 12190342 A EP12190342 A EP 12190342A EP 2592850 A1 EP2592850 A1 EP 2592850A1
Authority
EP
European Patent Office
Prior art keywords
hearing
transmission mode
hearing device
binaural
input signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12190342.1A
Other languages
German (de)
English (en)
Other versions
EP2592850B1 (fr
Inventor
Marc Aubreville
Eghart Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sivantos Pte Ltd
Original Assignee
Siemens Medical Instruments Pte Ltd
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Publication of EP2592850A1 publication Critical patent/EP2592850A1/fr
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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
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/552—Binaural
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • 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
    • H04R2225/61—Aspects relating to mechanical or electronic switches or control elements, e.g. functioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices
    • 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
    • H04R25/407—Circuits for combining signals of a plurality of transducers

Definitions

  • the present invention relates to a method for operating a binaural hearing system comprising a left hearing device and a right hearing device by providing a left internal input signal in the left hearing device, providing a right internal input signal in the right hearing device, turning on a transmission operation of the left hearing device and / or the right hearing and off the transmission mode.
  • the present invention relates to a corresponding binaural hearing system with two hearing devices.
  • a hearing device here means any device which can be worn in or on the ear and causes a hearing stimulus, in particular a hearing device, a headset, headphones and the like.
  • Hearing aids are portable hearing aids that are used to care for the hearing impaired.
  • different types of hearing aids such as behind-the-ear hearing aids (BTE), hearing aid with external receiver (RIC: receiver in the canal) and in-the-ear hearing aids (ITE), e.g. Concha hearing aids or canal hearing aids (ITE, CIC).
  • BTE behind-the-ear hearing aids
  • RIC hearing aid with external receiver
  • ITE in-the-ear hearing aids
  • ITE in-the-ear hearing aids
  • ITE in-the-ear hearing aids
  • ITE concha hearing aids or canal hearing aids
  • the hearing aids listed by way of example are worn on the outer ear or in the ear canal.
  • bone conduction hearing aids, implantable or vibrotactile hearing aids are also available on the market. The stimulation of the damaged hearing takes place either mechanically or electrically.
  • Hearing aids have in principle as essential components an input transducer, an amplifier and an output transducer.
  • the input transducer is usually a sound receiver, z. As a microphone, and / or an electromagnetic receiver, for. B. an induction coil.
  • the output transducer is usually used as an electroacoustic transducer, z. B. miniature speakers, or as an electromechanical transducer, z. B. bone conduction, realized.
  • the amplifier is usually integrated in a signal processing unit.
  • FIG. 1 shown using the example of a behind-the-ear hearing aid.
  • a hearing aid housing 1 for carrying behind the ear one or more microphones 2 for receiving the sound from the environment are installed.
  • a signal processing unit 3 which is also integrated in the hearing aid housing 1, processes the microphone signals and amplifies them.
  • the output signal of the signal processing unit 3 is transmitted to a loudspeaker or earpiece 4, which outputs an acoustic signal.
  • the sound is optionally transmitted via a sound tube, which is fixed with an earmold in the ear canal, to the eardrum of the device carrier.
  • the power supply of the hearing device and in particular the signal processing unit 3 is effected by a likewise integrated into the hearing aid housing 1 battery. 5
  • Sophisticated binaural signal processing algorithms in hearing aids such as binaural beamforming or binaural spatial noise cancellation, require a continuous data connection to the other hearing aid of the binaural hearing system.
  • the problem with a live data link is that the audio signal transmission that takes place consumes a lot of power, which in turn reduces the life of a battery.
  • the binaural transmission is usually activated manually. This is done, for example, by manually selecting a suitable hearing program in a particular situation.
  • the object of the present invention is thus to reduce the energy requirement of a binaural hearing system.
  • the transmission mode of one of the hearing devices of the binaural hearing system is automatically switched on, if this requires the current hearing situation.
  • the internal input signal is analyzed by the respective hearing device.
  • switching on the transmission mode be controlled very needs.
  • the transmission mode is automatically switched off, if the current listening situation allows it.
  • not only the internal input signal is evaluated by the hearing device, but also a received from the other hearing device communication signal.
  • For switching off the transmission mode so binaural data can be evaluated in each hearing.
  • the automatic switching on and off of the communication between the two hearing devices saves energy because the communication is only maintained as long as it is necessary in the current listening situation.
  • a decision is notified of one of the hearing devices with regard to switching on the respective other hearing device, so that the other hearing device switches on the transmission mode as a function of the decision received.
  • the two hearing devices record the broadcasting operation at the same time as possible.
  • the power-on decision does not need to be transmitted.
  • the received decision for switching on the other hearing device has a higher priority than the internal input signal of the hearing device.
  • the transmission mode of the hearing device is switched on, independently of the analysis result of the internal input signal. Binaural processing thus takes precedence.
  • the respective internal input signal from the respective hearing device is analyzed with regard to a background noise for switching on the transmission mode, and when the background noise is a continuous level above a predetermined level Threshold has, the transmission mode turned on.
  • a background noise for switching on the transmission mode
  • Threshold has, the transmission mode turned on.
  • the probabilities with which a speech sound arrives from one side and from the front or the rear with respect to a given frontal direction can be calculated, and if the probability of arrival from the side is higher than that Probability of arrival from the front or back, the transmission mode is turned on.
  • the transmission mode is not turned on or if it is turned off when the input signals of both hearing devices fall below a predetermined level. If the input signals are very low, this indicates a quiet environment, so that it can be dispensed with directional microphone. In a quiet situation, it is more advantageous to choose the omnidirectional operation, which can be dispensed with the binaural signal transmission, so that ultimately energy can be saved again.
  • a binaural processing namely a binaural directional microphone, a binaural wind noise suppression and / or a binaural feedback suppression can also be activated.
  • the corresponding binaural algorithms are also activated.
  • the transmission mode can be switched off when an effect strength of the binaural processing falls below a predetermined level. If the effectiveness of the binaural processing, which can be measured by comparing the input signal and the output signal, too low, it is again favorable to dispense with the binaural processing and just on the binaural signal transmission, which brings back energetic advantages ,
  • a hearing system has, for example, two hearing aids: a left hearing aid (left hearing aid) and a right hearing aid (right hearing aid).
  • the left hearing aid is worn on the left ear and the right hearing aid on the right ear.
  • a binaural supply can be guaranteed.
  • FIG. 2 such a binaural hearing system is shown schematically.
  • the hearing system comprises a left hearing aid 18 and a right hearing aid 11. Both hearing aids 10, 11 are separated from one another by a system boundary 12.
  • a wireless audio data connection 13 is given. It can also be a wired connection.
  • this data or communication connection 13 symbolized by concrete lines 14, 15 shown.
  • FIG. 2 Representing the individual hearing aids 10, 11 are in FIG. 2 only lines and decision blocks entered. For clarity, other common components of a hearing aid are in FIG. 2 not shown.
  • the left hearing aid 10 has a decision unit 16 with which a decision is made about switching on the transmission operation of the left hearing aid 10.
  • the left hearing aid 10 has a decision unit 17, which decides on switching off a transmission or transmission operation of the left hearing aid 10.
  • Input signal of the decision unit 16 for switching on the transmission mode is a left signal ls, which represents an internal input signal of the left hearing device or the left hearing aid 10.
  • the left signal ls is a microphone signal from a microphone of the left hearing aid 10.
  • the decision unit 16 analyzes the internal input signal ls and outputs a corresponding one Output signal atl for activating the transmission mode or the transmission. With this output signal atl, a switch 18 can be symbolically controlled with which the transmission or transmission can be activated and deactivated.
  • the transmission mode is activated (switch 18 is switched on), so that the internal input signal ls of the left hearing aid 10 can be transmitted as a communication signal via the (virtual) line 15 to the right hearing aid 11 wirelessly or by wire.
  • the right-hand hearing device 11 has a decision unit 19 for deciding whether the transmission operation of the right-hand hearing device 11 should be recorded or not.
  • the input signal of the decision unit 19 is a right signal rs, which here also represents an internal input signal of the right-hand hearing device 11 and may for example be a microphone signal.
  • the right-hand hearing device 11 has a decision unit 20 in order to decide whether the transmission mode of the right-hand hearing device 11 is switched off or not.
  • the transmission mode of the right hearing device 11 can be activated. Therefore, the signal atr serves as a driving signal for a switch 21. Is the switch 21 as in the in FIG. 2 example shown in the on state, the right signal rs is transmitted as Kommunikatinssignal via the (virtual) line 14 to the left hearing aid 10.
  • the decision unit 17 for switching off the transmission operation of the left hearing aid 10 is not only the left signal ls, but also the right signal rs available because of the activated binaural data transmission.
  • the decision unit 17 analyzes these two signals and delivers a corresponding deactivation signal dtl of the left hearing device 10.
  • the deactivation signal dtl can also be used to actuate the switch 18. If the transmission mode is to be deactivated, the switch 18 is folded accordingly, so that no more data connection via the (virtual) line 15 is. The left signal ls is then no longer transmitted to the right hearing aid 11.
  • the decision unit 20 of the right hearing aid 11 is supplied with the two internal input signals rs and ls, if according to the example of FIG. 2 the communication link 13 is still standing. In dependence on these two signals rs and ls, the decision unit 20 generates a deactivation signal dtr of the right hearing device 11.
  • the switch 21 of the right hearing device 11 is also actuated with this deactivation signal dtr. Accordingly, after a deactivation decision, the switch 21 is opened, so that via the (virtual) line 14, the right-hand signal rs is no longer transmitted to the left-hand hearing device 10.
  • the decisions of the hearing aids via the activation and deactivation of the communication connection 13 are initially independent of each other. This also means, for example, that a transmission mode from the left hearing aid 10 to the right hearing aid 11 can be activated, while a transmission operation from the right hearing aid 11 to the left hearing aid 10 is deactivated (or vice versa). Of course, both hearing aids 10, 11 are in transmission mode, or there are off in both hearing aids transmission mode.
  • the decisions of the hearing aids 10, 11 are synchronized. This is in FIG. 2 symbolized by the double arrow 22.
  • the relevant synchronization of the two hearing aids 10, 11 takes place with a synchronization signal syn.
  • This synchronization signal is transmitted, for example, via the communication link 13.
  • the acoustic environment is continuously analyzed on a monaural basis. This means that in parallel in the left hearing aid 10 and in the right Hearing 11 an analysis takes place.
  • Each page may decide on the basis of predetermined criteria whether the use of a binaural connection or communication 13 (eg via one or two lines 14, 15) would be helpful.
  • the two hearing aids 10, 11 are then optionally interconnected.
  • the connection preferably takes place via a low-rate data connection.
  • the decision made by a hearing aid is transmitted to the other hearing aid for synchronization. This allows both sides to come to a joint decision, with predetermined rules are observed. Once the connection is established, it is maintained or deactivated based on other criteria. For deactivation, as described above, additional information is provided by the audio signal from the other side.
  • the decision units 16, 17, 19 and 20 can decide on the activation and deactivation of the respective transmission mode.
  • the decision units can use the background noise as a criterion.
  • a monaural evaluation prior to establishment of the communication link it can be checked whether the continuous noise level of the background noise in the monaural directional microphone signal is above a predetermined level for a certain period of time. This is an indication of a difficult listening situation in which one can benefit from binaural, directional processing.
  • a binaural directional microphone is activated (eg, to narrow the focus in the frontal direction) if the measured noise floor on one side is above a certain level.
  • an activation command for the binaural audio connection is sent to the other side, ie to the other hearing aid.
  • binaural eight When the binaural connection is established, additional sources of information are available that allow other criteria to be considered for deciding whether to maintain or disable binaural processing. For example, it is possible to calculate a signal according to the so-called "binaural eight". This signal corresponds to a phase-correct subtraction of two monaural beamformer signals or of two omnidirectional signals. This signal consists essentially of sound components from the sideways directions and signals from the front are hidden. The binaural Eight explicitly excludes signals arriving from the front (zero degree direction). This is the essential difference to the monaural case.
  • the level of noise floor of the resulting signal provides more accurate and reliable activation control possible because the zero-degree useful signal is not included.
  • the probability of a speech signal can be used.
  • the probabilities of the presence of speech in the current signals are calculated separately on both sides.
  • a side-to-side beam is activated when the likelihood of the page arriving a voice signal is higher than, for example, the probability that voice will arrive from the front, back or opposite side.
  • this decision is made without directing a directional beam on both sides.
  • the left and right side beams and the left and right omnidirectional signals are available.
  • the decision to maintain or disable the "side view" can be based on the likelihood that speech is present in the directional signal become. This is much more reliable than supporting the decision on only the two monaural signals from the left and right hearing aids.
  • Yet another criterion for deciding whether to make a binaural audio connection or not can be the strength of the desired effect.
  • the criterion of the strength can be used. For example, if the connection has been activated based on a monaural criterion that signals "wind" or "feedback," and the binaural algorithm begins to work, its strength can be calculated. This can be determined from how much the corresponding wind noise reduction or feedback reduction in the output signal is noticeable compared to the input signal. Based on the determined value, the binaural data connection can then be maintained or deactivated.
  • a binaural audio connection on the basis of monaural decisions is possible.
  • the binaural audio connection can be maintained or disabled based on additional binaural decisions.
  • binaural algorithms can be automatically activated and deactivated. These are, for example, narrow directional lobe (binocular directional microphone with narrow lobe (+/- 20 °) in frontal direction), "side view” (binaural directional lobe to the left or right side), binaural wind noise suppression and / or binaural feedback suppression.
  • This automatic activation and deactivation of the binaural algorithms and the binaural communication can save energy and extend the life of a battery.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)
EP12190342.1A 2011-11-08 2012-10-29 Activation et désactivation automatiques d'un système auditif binaural Active EP2592850B1 (fr)

Applications Claiming Priority (1)

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DE102011085936 2011-11-08

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EP2592850A1 true EP2592850A1 (fr) 2013-05-15
EP2592850B1 EP2592850B1 (fr) 2018-05-02

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EP (1) EP2592850B1 (fr)
DK (1) DK2592850T3 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020202725B4 (de) * 2020-03-03 2022-11-17 Sivantos Pte. Ltd. Binaurales Hörsystem mit zwei im oder am Ohr des Nutzers getragenen Hörinstrumenten sowie Verfahren zum Betrieb eines solchen Hörsystems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009153718A1 (fr) * 2008-06-17 2009-12-23 Koninklijke Philips Electronics N.V. Agencement d'écouteurs et son procédé de fonctionnement
WO2010022456A1 (fr) * 2008-08-31 2010-03-04 Peter Blamey Réduction du bruit binaural
EP2182742A1 (fr) * 2008-11-04 2010-05-05 GN Resound A/S Ajustement asymétrique
EP2219389A1 (fr) * 2009-02-16 2010-08-18 Siemens Medical Instruments Pte. Ltd. Dispositif et procédé d'estimation des bruits parasites dans l'arrivée d'un appareil auditif binauréal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6549633B1 (en) * 1998-02-18 2003-04-15 Widex A/S Binaural digital hearing aid system
EP2373062A3 (fr) * 2010-03-31 2015-01-14 Siemens Medical Instruments Pte. Ltd. Procédé de réglage double pour un système auditif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009153718A1 (fr) * 2008-06-17 2009-12-23 Koninklijke Philips Electronics N.V. Agencement d'écouteurs et son procédé de fonctionnement
WO2010022456A1 (fr) * 2008-08-31 2010-03-04 Peter Blamey Réduction du bruit binaural
EP2182742A1 (fr) * 2008-11-04 2010-05-05 GN Resound A/S Ajustement asymétrique
EP2219389A1 (fr) * 2009-02-16 2010-08-18 Siemens Medical Instruments Pte. Ltd. Dispositif et procédé d'estimation des bruits parasites dans l'arrivée d'un appareil auditif binauréal

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DK2592850T3 (da) 2018-08-06
US20130114818A1 (en) 2013-05-09
EP2592850B1 (fr) 2018-05-02
US9584914B2 (en) 2017-02-28

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