EP2645743B1 - Appareil auditif pour un traitement binaural et procédé destiné à préparer un traitement binaural - Google Patents

Appareil auditif pour un traitement binaural et procédé destiné à préparer un traitement binaural Download PDF

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Publication number
EP2645743B1
EP2645743B1 EP13160285.6A EP13160285A EP2645743B1 EP 2645743 B1 EP2645743 B1 EP 2645743B1 EP 13160285 A EP13160285 A EP 13160285A EP 2645743 B1 EP2645743 B1 EP 2645743B1
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EP
European Patent Office
Prior art keywords
signal
beamforming
earhook
directional
microphone signals
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EP13160285.6A
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German (de)
English (en)
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EP2645743A1 (fr
Inventor
Marc Aubreville
Eghart Fischer
Homayoun Kamkar Parsi
Stefan Petrausch
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Sivantos Pte Ltd
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Sivantos Pte Ltd
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Classifications

    • 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
    • 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
    • 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
    • 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
    • H04R2410/00—Microphones
    • H04R2410/01—Noise reduction using microphones having different directional characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/21—Direction finding using differential microphone array [DMA]

Definitions

  • the invention relates to a hearing device with an earpiece to be worn at an ear, which has a plurality of microphones and a signal processing device. This is designed to generate from microphone signals of the microphones by a multi-channel signal processing of each of the microphone signals, a receiver signal for a listener of the earpiece.
  • the invention also includes a method for providing a binaural supply by means of two ear parts of a hearing device to be worn on one ear in each case.
  • a binaural supply of the user is here meant that the earpiece signal of an ear part is additionally formed as a function of at least one microphone signal of a microphone that is located in the other ear part.
  • hearing device is here understood in general to mean any sound-emitting device which can be worn in or on the ear, in particular a hearing device, a headset, headphones and the like.
  • Hearing aids represent portable hearing devices that serve to care for the hearing impaired.
  • different types of hearing aids such as behind-the-ear hearing aids (BTE), hearing aid with external handset (RIC: receiver in the canal) and in-the-ear hearing aids (IDO), for example Concha hearing aids or canal hearing aids (ITE, CIC).
  • BTE behind-the-ear hearing aids
  • RIC hearing aid with external handset
  • IDO in-the-ear hearing aids
  • ITE Concha hearing aids or canal hearing aids
  • CIC 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.
  • 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. As miniature speaker, or as an electromechanical transducer, z. B. bone conduction, realized.
  • the amplifier is usually integrated in a signal processing unit. This basic structure is in FIG. 1 shown using the example of a behind-the-ear hearing aid. In 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
  • the signal processing unit 3 For processing the local microphone signals of the microphones 2, the signal processing unit 3 usually has a multi-channel signal processing.
  • each microphone signal is divided into a plurality of channels having different center frequency.
  • the splitting takes place for example by means of a filter bank or a discrete Fourier transformation (DFT).
  • DFT discrete Fourier transformation
  • a single behind-the-ear hearing aid, or earpiece in general may also include a plurality of microphones 2.
  • Their microphone signals can be combined by a so-called beamforming to a directed output signal, ie the signal components of different sound sources in the user's environment are more or less attenuated at the directed output, depending on which direction their respective sound on the microphone array is taken.
  • a direction-dependent sound detection sensitivity results when the microphone arrangement is followed by a beamforming.
  • the assignment function which describes the dependence of the sound detection sensitivity on the angle of incidence of the sound, is referred to as a directional characteristic.
  • a beamforming that processes only microphone signals from microphones of a single earpiece is referred to below as monaural beamforming and its output signal as a directed monaural signal.
  • microphone signals are combined with each other, at least one of which was detected at one ear and at the other ear of the user.
  • binaural beamforming signals derived from these microphone signals can also be processed. Since the microphones of different ear parts have a much greater distance (about 17 cm) than the microphones of a single ear part (about 1 to 2 cm) can be trained according to other directional characteristics through the binaural beamforming. In particular, the directional detection of low-frequency signal components is thereby facilitated.
  • the directional characteristics can be formed particularly well frequency-selective, if the beamforming in individual channels of a multi-channel Filter Bank is performed. Channel numbers greater than 16 are typically used here.
  • a transmission of the signals to a common signal processing device is necessary.
  • a radio link such as Bluetooth
  • the other ear part can then be combined with the local microphone signals through its multi-channel signal processing device, the received signal.
  • the problem with the currently available transmission techniques is that their bandwidth is limited so that not microphone signals of multiple microphones can be transmitted quickly enough, but only a single time signal. For example, only one single microphone signal can be exchanged between the earpieces per transmission direction.
  • a monaural beamforming can first be used to generate a directional monaural signal in each earpiece in which the signal from the sound source located behind the user is dampened relative to that of the sound source in front of the user. These directed monaural signals can then be transmitted for binaural beamforming.
  • the aforementioned multi-channel signal processing can also be used. However, with such an upstream signal processing, there is a time delay of the signal, which is generally in the range of approximately 6 ms.
  • a binaural hearing aid system which has an inter-ear transmission function and a noise suppression dependent thereon.
  • the document EP 2431973 A1 relates to an apparatus and method for improving audio quality through a microphone array.
  • the device comprises units for dividing and combining frequency bands from signals from the microphones.
  • An object of the present invention is to provide a binaural beamforming in a hearing apparatus which has a small time delay.
  • an earpiece to be worn on an ear for processing microphone signals of a plurality of microphones additionally provides a processing device, here referred to as a beamforming device, and a transmitting device.
  • the beamforming device differs from the multi-channel signal processing device in that it can generate a directional output signal from the microphone signals and has signal processing for this purpose, which has fewer channels than the multi-channel signal processing device.
  • a directional monaural signal is generated in the earpiece based on only one channel or at least fewer channels.
  • the transmitting device is configured to emit this directional output signal as an electrical or electromagnetic signal from the first earpiece. For example, the output signal can thus be transmitted to another ear piece on the other ear of the user, where it can then be used for a binaural supply.
  • the other ear part correspondingly also have a plurality of microphones as well as a beam-forming device and a transmitting device such as the first ear-piece.
  • the two ear parts are then designed to transmit their respective directed output signals via their transmitting devices to the respective other earpiece and then in each case on the basis of microphone signals of their own microphones and the signal received from the other earpiece by the described binaural beamforming a directional earpiece to produce that at the local, ie can be spent on one's own listener.
  • an output of the receiver signal by a listener in this case either the generation of a sound is meant or else, as in the case of a cochlear implant, the generation of electrical impulses.
  • the processes for generating the directional receiver signal described here correspond to the steps given by the method according to the invention.
  • the invention has the advantage that the directional output signal, which is to be transmitted via the transmitting device, can be generated with a significantly lower signal delay than is possible by means of the multi-channel signal processing device. Namely, a significant portion of the delay becomes due to the signal analysis by means of, for example, an analysis filter bank and the signal processing necessary after the processing by means of a synthesis filter bank caused.
  • the signal delay is dependent on the spectral resolution of the filter banks, since for a narrowband processing (channels with low bandwidth) correspondingly longer analysis or synthesis filters are necessary.
  • the beam-forming device of an earpiece makes it possible to bypass the multi-channel signal processing device and nevertheless to provide a directed output signal for the respective other earpiece.
  • a multichannel signal processing means that the multichannel signal processing unit has more than 16, in particular 48, channels.
  • the beamforming unit preferably has 16 or less than 16, in particular 4, channels. Also a single-channel processing is possible here.
  • the beam-forming device expediently divides each of the microphone signals by filtering onto the channels of the beam-forming device.
  • the filtering is expediently carried out by means of a low-pass filter and a high-pass filter. With more channels, one or more bandpass filters are provided accordingly.
  • a particularly efficient and low-delay filtering results from the low channel numbers used here by a time domain filtering.
  • the beamforming device preferably processes each microphone signal in the time domain without sub-sampling.
  • a sampling rate which the microphone signals have at an input of the beamforming device (for example 12 kHz or 16 kHz) is maintained even after a respective division of the microphone signals onto the channels of the beamforming device.
  • a time-signal-based directional microphone device is thus formed overall. This has the advantage on that for synthesizing the directional output signal, the signals of the individual channels must be simply additively superimposed. In particular, no up-sampling is necessary.
  • the beamformer beamformer provided in a channel may be adaptive, such as an adaptive Griffiths and Jim beamformer.
  • An adaptive beamformer has the advantage that the beamforming device can be operated independently of the multi-channel signal processing device.
  • a beamformer in the beamforming device in a channel in which a directional characteristic over a control parameter from outside the beamforming device is adjustable.
  • This form is referred to herein as a controlled beamformer. It is provided that the adjusting parameter is set by the signal processing device.
  • This embodiment has the advantage that in the controlled beamformer itself no calculations for adapting the directional characteristic to a current listening situation are necessary. Instead, information and calculation results of the multi-channel processing of the signal processing device can also be used in the beamforming device.
  • a development of the hearing device provides that in the multi-channel signal processing device itself in at least one channel an adaptive beamformer is provided. This can then be used for processing the local microphone signals in connection with the actual binaural beamforming. In the presence of at least one such adaptive beamformer in the multi-channel signal processing device, it can therefore be provided to set the setting parameter of at least one controllable beamformer of the beamforming device to a value which is calculated from an adjustment parameter of the at least one adaptive beamformer.
  • an average value is calculated from the values of the adjusting parameters for the directional characteristic of respectively 12 adaptive beamformers of the signal processing device, which is then used as the value for the control parameter of a controllable Beamformers the beamforming device is used.
  • Examples of transmittable control parameters here is the required in a channel adjustment factor with which the level of a microphone signal is adjusted in the manner of the level of the other microphone signal that even sounds are also represented as digital signals with the same amplitude. Differences may arise here due to manufacturing tolerances of the microphones themselves, due to differences in the processing of the signals, as may arise, for example, due to temperature fluctuations of the components, or due to the position of the microphones on the head.
  • a second important control parameter is the specification of the direction of least sensitivity. This minimum sensitivity (Notch) indicates the direction from which a signal must strike the ear piece so that it receives the greatest attenuation in the directional signal. This direction is particularly important for hiding sounds from a source of interference.
  • a receiving device for electrical or electromagnetic signal reception of an input signal is additionally provided in each earpiece.
  • the directional signal of a beamforming device can be received by the transmitting device.
  • the receiving device and the transmitting device can be components known from the prior art for a connection of two ear parts. Of course, the signal can also be received from another source.
  • the invention also includes further developments of the method according to the invention which have features as described here in connection with the hearing device according to the invention. For this reason, the corresponding developments of the method according to the invention are not described again here.
  • the described components of the hearing device each represent individual features of the hearing device that are to be considered independently of one another, which also independently of one another in each case further educate each other and thus individually or in any other than the combination shown to be considered part of the invention.
  • an earpiece 10 of a hearing device that carries a user of the hearing device to one ear.
  • the earpiece 10 may be, for example, a behind-the-ear hearing device or an in-the-ear hearing device.
  • the earpiece 10 has two microphones 12 whose signals are processed by a digital signal processor 14 (DSP).
  • DSP digital signal processor
  • the signal processor 14 further receives a single-channel time signal via an electronic receiver 16.
  • the time signal is transmitted to the receiver 16 via a data link 18, such as a cable, radio link or infrared link, from another earpiece 20 which the user at his other Ear wearing.
  • the signal processor 14 generates, from the microphone signals M1, M2 of the local microphones 12 and the received signal E1 received by the receiver 16, a receiver signal H1 transmitted by a receiver 22 of the earpiece 10 into an ear canal of the ear on which the user wears the earpiece 10 Sound signal is emitted.
  • the handset 22 may also be an electrical output unit of a cochlear implant.
  • the microphone signals M1, M2 and the receive signal E1 which respectively represent time signals, are transformed from the time domain TD (Time Domain) into a frequency domain FD (Frequency Domain) by a frequency analyzer 24 of a multichannel signal processor V.
  • the frequency analysis device 24 may be, for example, a filter bank or a Fourier transformation.
  • the transformed microphone signals M1, M2 are combined in each of the channels in the frequency range FD by a respective beamformer (shown overall as a beamformer 26) to directed subband signals.
  • the overall CH beamformer 26 thus generates a monaural directional signal S1 in the frequency range FD on the basis of the microphone signals M1, M2 of the microphones 12.
  • This and the transformed input signal E1 are combined by binaural beamformers 28 in each channel of the frequency range FD to subband signals of a directional binaural signal B1.
  • the beamformers 26, 28 may be conventional adaptive frequency domain beamformers, with the beamformers 28 taking advantage of the fact that there is a spatial separation between the microphones 12 on the one hand and the microphones (not shown) from whose signals the input signal E1 is formed is greater than that between the microphones 12 itself.
  • the user of the hearing device can choose whether he wants to supply the directional binaural receiver signal B1 or the directional monaural signal S1 to a synthesis device 30.
  • the individual subband signals (in total CH pieces) are combined to form a time domain signal, the receiver signal H1.
  • the synthesis device 30 may be, for example, a synthesis filter bank or an inverse Fourier transformation.
  • a further directed monaural signal S2 is generated, which is transmitted from a transmitting device 32 of the ear part 10 to the other ear part 20.
  • the transfer can also take place via a data connection 18 'in electrical or electromagnetic form, as in the case of the connection 18.
  • the directional monaural signal S2 is generated from the microphone signals M1, M2 of the local microphones 12 by a time domain beamformer device 34 (TD-Dir-Mic - Time Domain Directional Microphone) that is different from the signal processing V.
  • the directional monaural signal S2 is generated exclusively by processing the microphone signals M1, M2 in the time domain TD, so that no significant signal delay due to this processing Transformation is caused.
  • the signal S2 without the total delay D can be output from the earpiece 10 via the transmitting device 32.
  • the beamforming device 34 may nevertheless have more than one channel for processing. However, a number ch of the channels of the beamforming device 34 is smaller than the number CH of the channels of the processing device V.
  • a beamformer in particular a differential beamformer for a Zeit Schlschensbeamforming, as is known per se from the prior art, provided. There does not have to be a beamformer in every channel.
  • a beamformer may be dispensed with for the low-pass-filtered portion of the microphone signals M1, M2, since low-frequency beamforming may not be effective by means of the relatively close spaced microphones 12 (in the range of, for example, less than 4 cm) ,
  • the signals are processed in the beamforming device 34 as time domain signals, i. H. it does not take the so-called downsampling. Therefore, the subband signals of the individual channels of the beamforming device 34 can be combined by additive overlays without further signal delay to the directional monaural signal S2.
  • the beamformers of the beamforming device 34 may be adaptive beamformers. However, preference is given to using controlled beamformers whose directional characteristic can be set via control parameters which can be specified from outside the beamforming device 34.
  • a total of 64 adjusting parameters par for setting the directional characteristics of each beamformer in the ch channels of the beamforming device 34 can be transferred to the beamforming device 34.
  • the parameters par are calculated by a conversion device 36 from directional parameters PAR of the beamformer 26 (MAP - mapping). If the beamformers 26 are adaptive beamformers, their directional parameters PAR are adapted by appropriate optimization algorithms in a manner known per se to the spatial position of the useful and interfering sound sources.
  • the imaging device 36 may be provided, for example, for a given channel of the beamforming device 34 to consider those channels of the beamforming device 26, which together cover the same frequency range as the channel of the beamforming device 34. To all these channels then the control parameters of the beamformer 26 of the Imaging device 36 are read out and therefrom, for example by calculating the average, the Stellparameterwert for the beamformer of the corresponding channel of the beamforming device 34 are calculated. How the mapping of the PAR control values to the par control values has to be done in detail depends, for example, on the specific design of the hearing device and can be determined by simple experiments. In addition to averaging, for example, the calculation of a geometric mean or also the selection of a single, specific setting parameter value conceivable. The latter can be useful, for example, if particularly high signal power is detected in a particular channel.
  • the directional binaural signal S2 transmitted by the transmitting device 32 via the data connection 18 ' constitutes an input signal in the other earpiece 20, like the input signal E1 in the earpiece 10.
  • a beamforming device 34' is comparable for a time domain beamforming provided, from which the received signal E1 emerges.
  • the beamforming device 34 'of the earpiece 20 can be operated in the same manner as the beamforming device 34 in the earpiece 10. Accordingly, the output of this beamforming device 34' forms a directional monaural signal received over the data link 18 from the receiving device 16 as the input signal E1 ,
  • the choice of the number ch of the channels of the beamforming devices 34 and 34 ' represents a comparison between the signal delay caused by the beamforming device 34 and the possibility of being able to set different directional characteristics for signal components of different frequencies.
  • ch 4 channels
  • This monaurally directed input signal of the other earpiece must be transformed together with the microphone signals of the microphones 12 by an analysis device 24 in the frequency range FD in order to be processed by the binaural beamformers 28.
  • the signal S1 obtained from the microphone signals 12 must be delayed by a delay unit 40 by precisely this delay D1 + D2 to the two input signals of the binaural beamformer 28th to synchronize.
  • there is the transmission time which is to be estimated as before with 6 ms.
  • the beamforming device 34 By combining and mapping the adjustment parameters of the beamformer 26 to the adjustment parameters of the beamformer in the beamforming device 34, it is no longer necessary to provide adaptive beamformer in the beamforming device 34, so that in the beamforming device 34 no corresponding computational effort must be operated.
  • the beamforming device 34 is controlled remotely by the beamformer 26, as it were.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)

Claims (11)

  1. Dispositif auditif destiné à un traitement binaural, comprenant :
    un premier crochet d'oreille (10) devant être porté sur une oreille, comportant plusieurs microphones (12) et comportant un premier dispositif de traitement de signaux (V) qui est conçu pour générer un signal d'écouteur local (H1) destiné à un écouteur (22) du premier crochet d'oreille (10) à partir de signaux de microphones (M1, M2) des microphones (12) par un traitement de signal spectral multicanal de chacun des signaux de microphones (M1, M2),
    caractérisé en ce qu'il est en outre prévu dans le crochet d'oreille (10) un dispositif de mise en forme de faisceau (34) et un dispositif d'émission (32), dans lequel le dispositif de mise en forme de faisceau (34) est conçu pour générer un signal de sortie directif (S2) à partir des signaux de microphones (M1, M2) au moyen d'un traitement de signaux qui comprend moins de canaux spectraux que ceux du premier dispositif de traitement de signaux (V), et dans lequel le dispositif d'émission (32) est configuré pour émettre le signal de sortie directif (S2) sous la forme d'un signal électrique ou électromagnétique à partir du premier crochet d'oreille (10).
  2. Dispositif auditif selon la revendication 1, dans lequel le dispositif de mise en forme de faisceau (34) est configuré pour répartir chacun des signaux de microphones (M1, M2) au moyen d'un filtrage, notamment d'un filtrage dans le domaine temporel, à l'aide d'un filtre passe-bas, d'un filtre passe-haut et de préférence d'un ou de plusieurs filtres passe-bande, entre les canaux spectraux du dispositif de mise en forme de faisceau (34).
  3. Dispositif auditif selon la revendication 1 ou 2, dans lequel le dispositif de mise en forme de faisceau (34) est configuré pour traiter chacun des signaux de microphones (M1, M2) dans le domaine temporel (TD) sans suréchantillonnage et pour conserver également à cet effet la fréquence d'échantillonnage que présentent les signaux de microphones (M1, M2) à une entrée du dispositif de mise en forme de faisceau (34) après une répartition ou la répartition respective des signaux de microphones (M1, M2) entre les canaux spectraux du dispositif de mise en forme de faisceau (34).
  4. Dispositif auditif selon l'une quelconque des revendications précédentes, dans lequel le dispositif de mise en forme de faisceau (34) est configuré pour générer, dans chacun de ses canaux spectraux, à partir de parties de signal de chaque signal de microphone (M1, M2), qui sont contenues dans celui-ci, une partie correspondante du signal de sortie directif (S2) au moyen d'un formateur de faisceau différentiel.
  5. Dispositif auditif selon l'une quelconque des revendications précédentes, dans lequel le dispositif de mise en forme de faisceau (34) comporte un formateur de faisceau adaptatif dans au moins un canal spectral.
  6. Dispositif auditif selon l'une quelconque des revendications précédentes, dans lequel le dispositif de mise en forme de faisceau (34) comporte un formateur de faisceau commandé dans au moins un canal spectral, dans lequel une caractéristique d'orientation peut être réglée pour le canal spectral par l'intermédiaire d'un paramètre de réglage (par), et dans lequel le premier dispositif de traitement de signaux (V) est configuré pour régler le paramètre de réglage (par).
  7. Dispositif auditif selon la revendication 6, dans lequel le dispositif de traitement de signaux (V) comporte un formateur de faisceau adaptatif (26) dans au moins un canal spectral et est conçu pour régler le paramètre de réglage (par) d'au moins un formateur de faisceau pouvant être commandé du dispositif de mise en forme de faisceau (34) à une valeur qui est calculée à partir d'un paramètre de réglage (PAR) d'au moins l'un des formateurs de faisceau adaptatifs (26).
  8. Dispositif auditif selon l'une quelconque des revendications précédentes, dans lequel le premier crochet d'oreille (10) comporte un dispositif de réception (16) destiné à la réception d'un signal électrique ou électromagnétique en tant que signal d'entée (E1), et dans lequel le premier dispositif de traitement de signaux (V) est conçu pour former le signal d'écouteur local (H1) sur la base des signaux de microphones (M1, M2) et du signal d'entrée en tant que signal directif par formation de faisceau binaurale (28).
  9. Dispositif auditif selon l'une quelconque des revendications précédentes, dans lequel le premier dispositif de traitement de signaux (V) comporte plus de 16, notamment 48, canaux spectraux (CH) et le dispositif de de mise en forme de faisceau comporte 16 ou moins de 16, notamment 4, canaux spectraux (ch).
  10. Dispositif auditif selon l'une quelconque des revendications précédentes, comportant un second crochet d'oreille (20) devant être porté sur une autre oreille, dans lequel le second crochet d'oreille comporte plusieurs microphones ainsi qu'un dispositif de mise en forme de faisceau (34') et un dispositif d'émission comme dans le cas du premier crochet d'oreille (10), dans lequel les deux crochets d'oreille (10, 20) sont conçus pour transmettre leurs signaux de sortie directifs (S2) respectifs par l'intermédiaire de leurs dispositifs d'émission (32) à l'autre crochet d'oreille (10, 20) respectif et pour générer un signal d'écouteur local directif (H1) sur la base de signaux de microphones (M1, M2) du microphone propre respectif (12) et du signal (E1) respectif reçu par l'autre crochet d'oreille (20, 10) par formation de faisceau binaurale (28).
  11. Procédé destiné à un traitement binaural, au moyen de deux crochets d'oreille (10, 20) devant être portés par une oreille respective, d'un dispositif auditif, lesquels crochets d'oreille comportent un dispositif de traitement spectral de signaux (V) comportant une pluralité de canaux spectraux (ch), comprenant les étapes consistant à :
    - générer dans chacun des crochets d'oreille (10, 20) un signal monaural directif (S2) à partir de signaux de microphones (M1, M2) des microphones (12) du crochet d'oreille (10, 20) au moyen d'un dispositif de mise en forme de faisceau (34, 34') du crochet d'oreille (10, 20), qui comporte moins de canaux spectraux que le dispositif de traitement de signaux (V) du crochet d'oreille,
    - échanger les signaux monauraux directifs (S2) entre les crochets d'oreille (10, 20) par l'intermédiaire d'une transmission électrique ou électromagnétique (18, 18').
    - générer dans chacun des crochets d'oreille (10, 20) un signal binaural directif (B1) par combinaison des signaux de microphones (M1, M2) du microphone considéré (12) et du signal monaural directif (E1) reçu au moyen du dispositif de traitement de signaux (V) du crochet d'oreille (10, 20) et fournir en sortie le signal binaural directif (B1) au moyen d'un écouteur du crochet d'oreille (10, 20).
EP13160285.6A 2012-03-27 2013-03-21 Appareil auditif pour un traitement binaural et procédé destiné à préparer un traitement binaural Active EP2645743B1 (fr)

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DE102012204877B3 (de) 2012-03-27 2013-04-18 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung für eine binaurale Versorgung und Verfahren zum Bereitstellen einer binauralen Versorgung
DE102013207149A1 (de) 2013-04-19 2014-11-06 Siemens Medical Instruments Pte. Ltd. Steuerung der Effektstärke eines binauralen direktionalen Mikrofons
US9949041B2 (en) 2014-08-12 2018-04-17 Starkey Laboratories, Inc. Hearing assistance device with beamformer optimized using a priori spatial information
US10536782B2 (en) 2015-07-02 2020-01-14 Carl L. C. Kah, Jr. External ear insert for hearing enhancement
JP2018186494A (ja) * 2017-03-29 2018-11-22 ジーエヌ ヒアリング エー／エスＧＮ Ｈｅａｒｉｎｇ Ａ／Ｓ 適応型サブバンドビームフォーミングを用いた聴覚装置と関連する方法
US10555094B2 (en) * 2017-03-29 2020-02-04 Gn Hearing A/S Hearing device with adaptive sub-band beamforming and related method
DK3383067T3 (da) * 2017-03-29 2020-07-20 Gn Hearing As Høreapparat med adaptiv underbåndsstråledannelse og tilhørende fremgangsmåde
DK3506658T3 (da) * 2017-12-29 2020-11-30 Oticon As Høreanordning, der omfatter en mikrofon, som er tilpasset til at blive placeret ved eller i en brugers øregang
EP4038901A1 (fr) 2019-09-30 2022-08-10 Widex A/S Procédé pour faire fonctionner un système audio binaural à porter dans ou sur l'oreille et système audio binaural à porter dans ou sur l'oreille

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DK2645743T3 (da) 2018-01-15
US9253571B2 (en) 2016-02-02
EP2645743A1 (fr) 2013-10-02
US20130259239A1 (en) 2013-10-03

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