EP3595334A2 - Procédé de lecture audio dans un appareil auditif - Google Patents

Procédé de lecture audio dans un appareil auditif Download PDF

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Publication number
EP3595334A2
EP3595334A2 EP19177816.6A EP19177816A EP3595334A2 EP 3595334 A2 EP3595334 A2 EP 3595334A2 EP 19177816 A EP19177816 A EP 19177816A EP 3595334 A2 EP3595334 A2 EP 3595334A2
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EP
European Patent Office
Prior art keywords
signal
virtual
hearing aid
generated
user
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.)
Withdrawn
Application number
EP19177816.6A
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German (de)
English (en)
Other versions
EP3595334A3 (fr
Inventor
Boon Siang Tan
Hoong Yih Chan
Henning Puder
Tobias Daniel Rosenkranz
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Sivantos Pte Ltd
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Sivantos Pte Ltd
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Publication date
Application filed by Sivantos Pte Ltd filed Critical Sivantos Pte Ltd
Publication of EP3595334A2 publication Critical patent/EP3595334A2/fr
Publication of EP3595334A3 publication Critical patent/EP3595334A3/fr
Withdrawn legal-status Critical Current

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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
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
    • H04S7/303—Tracking of listener position or orientation
    • H04S7/304—For headphones
    • 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
    • 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
    • H04R25/554—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 using a wireless connection, e.g. between microphone and amplifier or using Tcoils
    • 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
    • H04R25/558—Remote control, e.g. of amplification, frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H04S3/004—For headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/041—Adaptation of stereophonic signal reproduction for the hearing impaired
    • 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
    • H04R2225/55—Communication between hearing aids and external devices via a network for data exchange
    • 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
    • H04R25/43—Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 

Definitions

  • the invention relates to a method for audio playback in a hearing aid, a first external signal being provided, a first playback signal being generated on the basis of the first external signal, and the first playback signal being reproduced by a first output converter in the first local unit of the hearing aid becomes.
  • a hearing aid can provide a user with a satisfactory, realistic sound image in more and more situations.
  • An exception to this is currently the integration of hearing aids into higher acoustic entertainment electronics, as can be found, for example, in surround systems and / or home theater systems. While the mere transmission of external audio signals, as they are also used in consumer electronics, to the hearing aid on the one hand and the reproduction of such external audio signals in the presence of an additional, relevant background noise, on the other hand, are already dealt with in a variety of ways for hearing aids Playback of external audio signals, which are intended for a channel surround system, still have some catching up to do.
  • stereo signals are usually transmitted from a consumer electronics system, for example a television, to a hearing aid.
  • this multichannel soundtrack is downmixed to a two-channel stereo signal (i.e. to a left and a right channel) prior to transmission by means of streaming to the hearing aid.
  • a two-channel stereo signal i.e. to a left and a right channel
  • Acoustic information is lost because a full spatial sound image can no longer be produced from two channels alone (in particular not without additional assumptions with appropriate preprocessing).
  • a full transmission of the multichannel soundtrack in surround quality to the hearing aid is currently not provided.
  • the use of the multi-channel sound track would not be useful here either. If, for example, the user of the hearing aid was exposed to the full surround sound as generated by the surround system Real using the electroacoustic functions of the hearing aid, he would perceive the individual sound signals of the surround channels in a way that was realistic for him. Shading effects, in particular by the user's head, also play a role here. All of this would be lost if the multi-channel soundtrack were used, so that an improved sound perception would not necessarily be expected.
  • the invention is therefore based on the object of specifying a method for audio reproduction of external signals in a hearing device, which is intended to bring about a realistic spatial sense of hearing for the user.
  • the stated object is achieved according to the invention by a method for audio reproduction in a hearing device, a first external signal being provided, a geometric data record being specified for a head shape of a user of the hearing device, a first position being specified for a first virtual loudspeaker , wherein the propagation of the first external signal from the first virtual loudspeaker to a first local unit of the hearing aid is simulated on the basis of the geometric data record for the head shape of the user and on the basis of the first position, and a first virtual spatial signal is generated, with the aid of the first virtual Room signal, a first playback signal is generated, and wherein the first playback signal is reproduced by a first output converter in the first local unit of the hearing aid.
  • Advantageous and partially inventive configurations are the subject of the dependent claims and the following description.
  • An external signal is to be understood here in particular as a signal whose acoustic information is not generated in the hearing device itself, for example by an input transducer of the hearing device, but is already completely coded when the external signal is recorded by the hearing device for the first time.
  • an external signal is an electromagnetic signal which is made available to the hearing aid via a suitable protocol for wireless data or signal processing. In this sense, the acoustic information of the external signal is already present in coded form in the electromagnetic signal before reaching the hearing aid.
  • a streaming signal can be considered as an external signal here and in the following.
  • the provision of an external signal in this case includes in particular the step of a data or signal transmission of the external signal to the hearing aid by an external unit.
  • a geometric data record for a head shape of the user of the hearing aid includes in particular a data record which, for a volume element in a detected area, allows an assignment either to the head of the user or to the surroundings of the head, and / or to delimit a surface of the head environment.
  • the shape of his face in particular and preferably also the shape of his two pinnae is also resolved.
  • the generation of a virtual spatial signal includes, in the following, in particular that a signal is simulated and / or generated which, in terms of construction, has the same properties and acoustic information as possible as a real sound signal, which is emitted by a real loudspeaker at the corresponding position of the virtual one Loudspeaker propagated to the relevant - here to the first - local unit of the hearing aid.
  • a given external signal - in this case the first external signal - is used as the real sound signal.
  • a first position for the first virtual loudspeaker is specified, which is preferably a position corresponds to a real loudspeaker of an audio playback device, on the basis of which the first external signal in particular is provided to the hearing aid.
  • the sound signal resulting from this playback and its propagation to the first local unit of the hearing aid is now based on the geometric data record for the user's head shape
  • User-generated shadowing effects are simulated by having the first external signal propagate from the first virtual loudspeaker, taking into account the shape of the head, via the geometric data set to the first local unit of the hearing aid. The signal resulting from this simulation forms the first virtual room signal.
  • the output transducer includes in particular a transducer which is set up to convert an electrical signal into a sound signal, in particular an electroacoustic transducer such as a loudspeaker or a bone conduction receiver.
  • the first playback signal is reproduced by the first output converter, the said corresponding sound signal is being generated.
  • the generation of the first reproduction signal on the basis of the first virtual spatial signal can in particular take place in such a way that the first virtual spatial signal enters the first reproduction signal linearly at least in frequency band fashion, i.e. the first reproduction signal at least in frequency band form by the first virtual spatial signal or by superimposing the first virtual spatial signal on further signals is formed.
  • the described method for audio playback in a hearing aid can advantageously take place in the presence of an audio playback unit which reproduces at least the first external signal through a number of real loudspeakers, and at the same time provides this to the hearing aid.
  • the first position is predefined on the basis of a position of a real loudspeaker of the audio playback unit.
  • a spatial sound perception of the sound signal generated by the audio playback unit can be simulated by taking into account the shape of the user's head when simulating the propagation of the first external signal from a first virtual speaker positioned in particular at the location of a real speaker of the audio playback unit to the first local unit become.
  • the use of the first external signal which is made available to the hearing aid directly, instead of a real propagating sound signal from the audio playback unit, has the advantage that additional noise that does not have to be reduced in this case, and also the input transducer or inputs of the hearing aid so far their sensitivity can be reduced, for example, that acoustic feedback and / or other interference noises are completely suppressed.
  • a first head-related transfer function in particular with respect to the first position, is preferably determined on the basis of the geometric data record for the head shape of the user and on the basis of the first position, the propagation of the first external signal from the first virtual loudspeaker to the first local unit of the hearing device to generate the first virtual spatial signal is simulated using the first head-related transfer function.
  • the first head-related transfer function (HRTF) is the transfer function relevant for the propagation of a sound signal from the first position to the first local unit, which in particular also takes into account possible shading effects caused by the user's head during propagation, and is individually tailored to the special anatomy of the user's head.
  • the HRTF forms an individually characteristic pattern of resonances and with clear spectral maxima and sharply defined spectral minima, the frequency response of which varies depending on the direction of a sound source.
  • the resonances are in resonance rooms formed on the ear, whereby the spectrally most important resonance spaces are given by concha, fossa and scapha.
  • the frequencies for the spectral minima and maxima as well as the respectively associated magnitude frequency response can be determined using statistical regression models on the basis of measurement data of the ear, which in particular provide information about the said resonance spaces.
  • geometric datasets of the ears of a large number of persons are preferably to be created and the directional or angle-resolved HRTFs of the persons are to be measured.
  • curves can be determined depending on the direction by regression, in which geometric shape parameters of the ear appear as coefficients, and by which the respective spectral minimum or maximum is interpolated for any geometric shape parameters.
  • a final HRTF can now be formed based on the spectral minima and maxima.
  • the geometric data record for the head shape of the user is expediently generated by a mobile phone by means of a number of image recordings, and transmitted to the hearing aid for the specification.
  • a mobile phone by means of a number of image recordings, and transmitted to the hearing aid for the specification.
  • the generation of the geometric data record for the head shape of the user can also be carried out by an independent, specially provided and configured application on the mobile phone, which gives the user of the hearing aid instructions for taking a number, in particular a plurality, of images of his head and in particular his face issued with the camera of the mobile phone.
  • Such an independent application can in particular also access the data of a standard protocol for facial recognition as part of the security measures of the mobile phone in order to appropriately edit and / or "render" a corresponding geometric data record generated there for use in the hearing aid, so that the data of the standard protocol for face recognition are compatible for use in the hearing aid.
  • a first HRTF is determined on the basis of the geometric data set, on the basis of which the propagation of the first external signal from the first virtual loudspeaker to the first local unit of the hearing aid for generating the first virtual spatial signal is simulated
  • the spectrally important resonance spaces at the user's ear which are characteristic of the HRTF can be recognized on the basis of the number of image recordings.
  • a mobile phone can thus be used to generate at least one image by means of which an ear of the user can first be measured in detail, the measurement data preferably providing information about the said resonance spaces.
  • further information relevant to the propagation of the sound in the immediate vicinity of the head can also be extracted on the basis of an image recorded by means of the mobile telephone, e.g. regarding the shape and curvature of the cheeks, forehead and chin.
  • the directional and / or angle-resolved HRTF for the associated ear are determined.
  • a completely independent, frequency and / or angle-dependent numerical simulation of the sound propagation is also possible, taking into account the ear geometry measured on the basis of the image recordings and in particular the resonance rooms.
  • Such a selection based on a statistical regression model or a numerical simulation of the sound propagation is possible either on the mobile phone itself using a corresponding application, which in the case of the regression model may be set up to add additional data from a corresponding, server-based database which relate to the geometrical data sets and the HRTFs of the persons on which the statistical regression model is based.
  • the majority of image recordings can also be transmitted to a central database server or a central computer, for example via a corresponding Internet transmission protocol.
  • a determination of the HRTF searched for Relevant curves of the user can then be carried out on the basis of the or each image recording on the said database server, on which the corresponding geometric and HRFT data of other persons are also stored for the statistical regression model, or can be numerically simulated on a central computer with the appropriate mental performance.
  • a second external signal is advantageously provided and a second position is specified for a second virtual loudspeaker, a propagation of the second external signal from the second virtual loudspeaker to the first local unit of the hearing aid being simulated on the basis of the geometric data record for the head shape of the user and on the basis of the second position and a second virtual spatial signal is generated, the first reproduction signal being generated on the basis of the second virtual spatial signal.
  • the first reproduction signal is preferably generated by a possibly weighted superimposition of the first virtual RAM signal with the second virtual spatial signal and possibly further signals.
  • a second external signal and a second virtual loudspeaker allows, in particular, the application of the invention to such external signals which are provided by an audio playback unit with at least two loudspeakers, e.g. of stereo systems, the speakers of which are positioned at a distance from one another in the room, or of surround systems, which only provide a two-channel stereo signal as the first and second external signal.
  • the second position is specified based on a position of one of the real loudspeakers of the audio playback unit.
  • a third external signal is provided, a third position being specified for a third virtual loudspeaker, using the geometric data set for the Head shape of the user and based on the third position, a propagation of the third external signal from the third virtual loudspeaker to the first local unit of the hearing aid is simulated, and a third virtual room signal is generated, the first playback signal being generated on the basis of the third virtual room signal.
  • the first reproduction signal is preferably generated by a possibly weighted superimposition of the first virtual RAM signal with the second virtual room signal and the third virtual room signal, and optionally with further signals.
  • the first external signal or the first virtual speaker or the first virtual room signal applies analogously to the third external signal, the third virtual loudspeaker and the third virtual room signal.
  • the method can also be used in the environment of audio playback units with more than two speakers, such as "real" Surround systems, whereby the sound image achieved can be particularly realistically reproduced.
  • Each external signal, which is reproduced by a separate loudspeaker of the audio playback unit, is specifically taken into account in the process, and its propagation is used to generate a corresponding virtual spatial signal, which, in particular via the HRTF, also has the shadowing effects caused by the head of the user of the hearing aid considered.
  • the external signals can be provided directly by the audio playback unit, for example by the external signals being transmitted to the loudspeakers on the one hand by Bluetooth or another streaming protocol, and can also be received by the hearing aid.
  • the audio playback unit can also generate its own transmission signal for hearing aids, in which the external signals provided for the loudspeakers are mixed together ("downmix"). In this case, in particular the individual tracks from said transmission signal can be restored as external signals using special "upmix" protocols.
  • a propagation of the first external signal from the first virtual loudspeaker to a second local unit of the hearing aid is simulated on the basis of the geometric data record for the head shape of the user and on the basis of the first position, and a further virtual spatial signal is generated in the process , a second reproduction signal being generated on the basis of the further virtual spatial signal and in particular also on the basis of an additional virtual spatial signal generated by the second external signal, and the second reproduction signal being reproduced by a second output converter in the second local unit of the hearing device.
  • the first reproduction signal applies analogously to the second reproduction signal.
  • the procedure described allows binaural hearing aids, which comprise two local units, to be integrated into the method, which is particularly advantageous for a spatial perception of sound.
  • Two virtual room signals are preferably generated for each external signal, one of the two virtual room signals corresponding to the propagation of the relevant external signal from the assigned virtual speaker to the first local unit, and the other virtual room signal corresponding to the propagation of the relevant external signal from the assigned virtual speaker corresponds to the second local unit.
  • the first reproduction signal is then preferably generated on the basis of those virtual spatial signals which correspond to a propagation to the first local unit, and the second reproduction signal is generated on the basis of those virtual spatial signals which correspond to a propagation to the second local unit.
  • a head movement of the user of the hearing aid is detected for the predefinition of the first position and in particular all further relevant positions.
  • the detection can take place, for example, using a motion and / or acceleration sensor in the hearing device, in particular in the first local unit of the hearing device.
  • a starting position for the first position is preferably specified as a reference, and the first position is updated on the basis of the detected head movements with respect to this reference.
  • predetermined starting positions can match the real one Speaker positions correspond to the audio playback unit which provides the external signals.
  • the starting position can be specified manually, or e.g. also via a calibration process, in particular on the basis of the input transducers of the hearing aid, by evaluating the individual sound signals generated by the loudspeakers of the audio playback unit.
  • a specification of the first position based on the user's head movement has the advantage that the sound pattern adapts to the user's head movement, and e.g. in the case of a rotation to the right, the change in the shading effects which occur in the case of real sound signals can be taken into account by changing the positions of the virtual loudspeakers.
  • the result is a sound image in which the sound heard by the user corresponds exactly to his body movements.
  • a propagation of the first external signal from the first virtual loudspeaker to the first local unit of the hearing device is simulated using an HRTF, and the first virtual room signal is thus generated.
  • An HRTF allows frequency and angle-dependent information about the propagation of a sound signal, especially in the immediate vicinity of the ear and about the influence of the individual resonance spaces on the ear on the propagation.
  • a first channel of a multichannel surround signal is expediently provided as the first external signal.
  • the further channels of the surround signal are provided as further external signals.
  • the application of the method is particularly advantageous for improving the spatial sound perception of streamed surround signals.
  • the first channel of the multichannel surround signal is preferably provided by a direct transmission to the hearing aid.
  • the signals to be reproduced by the respective loudspeakers are transmitted wirelessly in the surround system, for example via Bluetooth or similar streaming protocols.
  • the external signals are not additionally generated, but can simply be tapped as the corresponding channels of the streaming signal.
  • a stereo signal or a mono signal is transmitted to the hearing device, the first channel of the multichannel surround signal being made available from the stereo signal or from the mono signal by preprocessing in the hearing device.
  • the external signals can be obtained from the stereo signal by preprocessing, which can consist in particular of an upmix.
  • the invention further specifies a hearing aid with at least one local unit, which is set up to carry out the above-described method.
  • the local unit is set up to receive a number of external signals and to decode the acoustic information contained therein, and to generate a virtual spatial signal for each of the external signals on the basis of a corresponding number of positions, and to use the virtual spatial signals Generate playback signal and play.
  • FIG. 1 A first local unit 1 and a second local unit 2 of a hearing device 4 are shown schematically in a top view.
  • the first local unit 1 and the second local unit 2 are to be worn by a user 6 of the hearing device 4 on the left and right ear, respectively.
  • the user 6, who wears the hearing aid 4 is now surrounded by a surround system 8, which comprises a front speaker 10, a front left speaker 12, a front right speaker 14, a rear left speaker 16 and a rear right speaker 18.
  • a surround system 8 which comprises a front speaker 10, a front left speaker 12, a front right speaker 14, a rear left speaker 16 and a rear right speaker 18.
  • the individual loudspeakers 10 to 18 reproduce different input signals, which are provided by a central unit 19 which is arranged directly on the front loudspeaker 10.
  • the front loudspeaker 10 thus receives a frontal output signal 20 from the central unit 19, the front left loudspeaker 12 receives a front left output signal 22 from the central unit 19, the front right loudspeaker 14 receives a front right output signal 24, the rear left loudspeaker 16 receives a rear left output signal 26, and the rear right speaker 18 receives a rear right output signal 28.
  • the output signals 20 to 28 are now transmitted via a corresponding streaming protocol as external signals to the first local unit 1 and to the second local unit 2 of the hearing device 4.
  • the data transmission itself is carried out by the central unit 19, but can also be carried out by the loudspeakers 10 to 18 itself, provided that the loudspeakers 10 to 18 are set up accordingly, each of which sends its own output signal 20 to 28 to the first local unit 1 and to the second local unit 2 transmitted.
  • the frontal output signal 20 thus enters the first local unit 1 as a first external signal, the front left output signal 22 as a second external output signal, the front right output signal 24 as a third external signal, etc.
  • the said local unit goes into the second local unit Output signals 20 to 28 also as a first or a second or a third external signal.
  • the external signals 20 to 28 are now processed in each of the two local units 1, 2 in such a way that a realistic spatial hearing sensation is generated for the user 6, as would be the case at a real treble in the surround system 8.
  • the hearing aid 4 is provided with information about the positions of the loudspeakers 10 to 18. This can be done on the one hand via a direct transmission of position information from the respective loudspeaker 10 to 18 to the respective local unit 1, 2, or also via a corresponding user input.
  • the first local unit 1 now contains the first position 30, the second position 32, the third position 34, the third position 36 and the fifth position 38 of the front loudspeaker 10, of the front left loudspeaker 12, of the front right loudspeaker 14, the rear left speaker 16 and the rear right speaker 18 in front.
  • a respective head-related transfer function for propagating a sound signal from the corresponding loudspeaker 10 to 18 to the first local unit 1 is also provided in the first local unit 1.
  • a sound signal which would be generated by the first external signal 20 (which corresponds to the frontal output signal 20) from a loudspeaker positioned at the first position 30, is propagated to the first local unit 1, and is switched off in particular by the head of the user 6.
  • a virtual room signal to be described is generated, on the basis of which a reproduction signal for the first local unit 1 is generated.
  • the other output signals 22 to 28 or the remaining ones also go into this reproduction signal of the first local unit 1 Speakers 12 to 18 corresponding virtual room signals.
  • FIG. 2 is a block diagram of a method for generating a first playback signal 40 and a second playback signal 42 for the hearing aid 4 according to FIG Figure 1 shown.
  • the output signals 20 to 28, which are each transmitted as external signals to the first local unit 1 and to the second local unit 2, are first of all filtered using an HRTF 44.
  • the HRTF 44a corresponds to the propagation of a sound signal, which was generated at the first position 30 by a virtual loudspeaker corresponding to the frontal loudspeaker 10, to the first local unit 1.
  • the first external signal corresponding to the frontal output signal 20 is now filtered with the HRTF 44a, and a first virtual room signal 46 is generated here. Accordingly, the second external signal corresponding to the front left output signal 22 is filtered with the HRTF 44b, and a second virtual room signal 48 is generated in the process. In a similar way. A third virtual room signal 50 is generated from the third external signal, which corresponds to the front right output signal 24, etc. The five virtual room signals 46 to 54 are now combined to form the first playback signal 40, if appropriate with a corresponding weighting. The first reproduction signal 40 is reproduced for the user 6 by a first output converter 56 in the first local unit 1 of the hearing device 4.
  • the second reproduction signal is generated in a comparable manner and is reproduced to the user 6 by a second output converter 58 in the second local unit 2 of the hearing device 4.
  • the first external signal corresponding to the frontal output signal 20 is filtered with the HRTF 44f, which is a propagation corresponds to a sound signal from a virtual loudspeaker positioned at the first position 30 to the second local unit 2.
  • a further virtual spatial signal 60 is generated, which is used together with the other virtual spatial signals 62 to 68 to form the second reproduction signal 42.
  • FIG 3 is a schematic cross section through a geometric data set 70 for a head shape of the user 6 of the hearing aid 4 according to Figure 1 shown.
  • the section plane lies transversely at the level of the ears 72, 73 and the nose 74 of the user 6. It can be clearly seen here that, due to the symmetry, a sound signal which is generated by a loudspeaker arranged at the first position 30 is almost the same can propagate to the left ear 72 as well as to the right ear 73. For this reason, the virtual spatial signals 46, 60 generated by means of the corresponding HRTF differ with respect to the first position 30 Figure 2 not essential from each other.
  • a sound signal which is generated by a loudspeaker arranged at the second position 32, this is no longer the case as a result of the shading by the nose 74, which occurs when it is propagated to the right ear 73.
  • the corresponding virtual spatial signals that are included in the first and second reproduction signals 40 and 42 are therefore different.
  • a sound signal, which is generated by a loudspeaker arranged at the fourth position 36, is also switched off by the auricle during propagation to the left ear 72.
  • the shadowing effects of the ears 72, 73 and the nose depend to a considerable extent on the anatomical conditions of the user 6. This is all the more the case when the virtual loudspeakers for which the virtual spatial signals relate to a predefined position Figure 2 to generate, head movements of the user 6 relative to the physical speakers 10 to 18 of the surround system 8 are also detected.

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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)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
EP19177816.6A 2018-06-20 2019-06-03 Procédé de lecture audio dans un appareil auditif Withdrawn EP3595334A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018210053.5A DE102018210053A1 (de) 2018-06-20 2018-06-20 Verfahren zur Audio-Wiedergabe in einem Hörgerät

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EP3595334A2 true EP3595334A2 (fr) 2020-01-15
EP3595334A3 EP3595334A3 (fr) 2020-04-01

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EP (1) EP3595334A3 (fr)
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JP7332745B2 (ja) * 2021-04-10 2023-08-23 英霸聲學科技股▲ふん▼有限公司 音声処理方法及び音声処理装置

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Publication number Priority date Publication date Assignee Title
US6021206A (en) * 1996-10-02 2000-02-01 Lake Dsp Pty Ltd Methods and apparatus for processing spatialised audio
CN2805282Y (zh) * 2004-12-03 2006-08-09 陈奚平 头戴式音响装置
WO2007031907A2 (fr) * 2005-09-15 2007-03-22 Koninklijke Philips Electronics N.V. Dispositif de traitement de donnees sonores et procede de traitement synchronise de donnees sonores
EP1841281B1 (fr) * 2006-03-28 2015-07-29 Oticon A/S Système et procédé pour générer des marqueurs auditifs spatiaux
US8208642B2 (en) * 2006-07-10 2012-06-26 Starkey Laboratories, Inc. Method and apparatus for a binaural hearing assistance system using monaural audio signals
DE102007051308B4 (de) * 2007-10-26 2013-05-16 Siemens Medical Instruments Pte. Ltd. Verfahren zum Verarbeiten eines Mehrkanalaudiosignals für ein binaurales Hörgerätesystem und entsprechendes Hörgerätesystem
US9031242B2 (en) * 2007-11-06 2015-05-12 Starkey Laboratories, Inc. Simulated surround sound hearing aid fitting system
EP2351384A1 (fr) * 2008-10-14 2011-08-03 Widex A/S Procédé de rendu stéréo binaural dans un système de prothèse auditive et système de prothèse auditive
US9030545B2 (en) * 2011-12-30 2015-05-12 GNR Resound A/S Systems and methods for determining head related transfer functions
EP2806661B1 (fr) * 2013-05-23 2017-09-06 GN Resound A/S Prothèse auditive avec amélioration spatiale de signal
US9124983B2 (en) * 2013-06-26 2015-09-01 Starkey Laboratories, Inc. Method and apparatus for localization of streaming sources in hearing assistance system
DE102014008495A1 (de) * 2014-06-07 2015-12-17 Eps-Technic, Hampapa & Junke Gbr (Vertretungsberechtigter Gesellschafter: Edgar Hampapa, 74199 Untergruppenbach) Universal-Softadapter für Hörgeräte
US10181328B2 (en) * 2014-10-21 2019-01-15 Oticon A/S Hearing system

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US20190394583A1 (en) 2019-12-26
CN110620982A (zh) 2019-12-27
EP3595334A3 (fr) 2020-04-01
DE102018210053A1 (de) 2019-12-24

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