EP2611217A1 - System, Hörgerät und Verfahren zur Verbesserung der Synchronisierung eines akustischen Signals mit einer Videoanzeige - Google Patents

System, Hörgerät und Verfahren zur Verbesserung der Synchronisierung eines akustischen Signals mit einer Videoanzeige Download PDF

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Publication number
EP2611217A1
EP2611217A1 EP12166569.9A EP12166569A EP2611217A1 EP 2611217 A1 EP2611217 A1 EP 2611217A1 EP 12166569 A EP12166569 A EP 12166569A EP 2611217 A1 EP2611217 A1 EP 2611217A1
Authority
EP
European Patent Office
Prior art keywords
hearing aid
acoustic signal
delay
video display
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.)
Ceased
Application number
EP12166569.9A
Other languages
English (en)
French (fr)
Inventor
Søren Christian Ell
Jesper Lund Nielsen
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.)
GN Hearing AS
Original Assignee
GN Resound AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US13/355,189 external-priority patent/US9924282B2/en
Application filed by GN Resound AS filed Critical GN Resound AS
Priority to JP2012282182A priority Critical patent/JP5872449B2/ja
Priority to CN201210592991.8A priority patent/CN103458346B/zh
Publication of EP2611217A1 publication Critical patent/EP2611217A1/de
Ceased 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
    • 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
    • H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest

Definitions

  • the present invention relates to the field of hearing aids. More in particular, the present invention relates to presentation of an acoustic signal to a user of a hearing aid, which acoustic signal is accompanying (or is intended to be accompanied by) concurrent display of video.
  • the user of the hearing aid may receive the audio from the system via a microphone of the hearing aid. This may reduce the quality of the audio as perceived by the user of the hearing aid.
  • a media system such as a TV
  • an audio signal (e.g. such as may be streamed from an audio output, such as RCA phone connector, of a TV) may not be in sync with a corresponding video display by the TV.
  • the audio signal may be in advance in time compared to the video display.
  • This off-sync (out of sync) may e.g. at least partly be due to the processing (e.g. encoding) that is carried out in order to generate a video signal and an audio signal, respectively.
  • the processing of the signals may not result in a synchronized generation (e.g. stream) of the video signal and the audio signal, respectively.
  • the processing of the video stream may be more complex and may therefore take longer than the processing of the audio stream.
  • the inventors have noticed that if the video and audio presentations are too far off-sync, e.g. more than about 40 ms, it may be a noticeable and disturbing factor for the user (i.e. the viewer and listener).
  • the inventors have realized that there is a need for providing specific solutions for a hearing aid, for a system comprising a hearing aid, and for a method comprising utilization of a hearing aid for provision of improved synchronization between the presentations of inter-related audio and video signals.
  • a system for improving synchronization of an acoustic signal to a video display comprising a hearing aid and a delay unit that may be integrated in the hearing aid.
  • the hearing aid comprises a hearing loss processor configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the hearing aid is configured for receiving a first audio signal intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the hearing aid is configured for generating a first acoustic signal to be presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the delay unit is configured for applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • a hearing aid configured for improving synchronization of an acoustic signal to a video display.
  • the hearing aid comprises a hearing loss processor configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the hearing aid is configured for receiving a first audio signal being intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the hearing aid is configured for generating a first acoustic signal to be presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the hearing aid comprises a delay unit configured for applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • a method for improving synchronization of an acoustic signal to a video display comprises receiving a first audio signal by a hearing aid.
  • the first audio signal is intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the hearing aid comprises a hearing loss processor configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the method comprises generating a first acoustic signal by the hearing aid.
  • the first acoustic signal is presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the method comprises applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • the hearing aid may comprise one or more microphones, e.g. a first microphone and/or a second microphone for reception of acoustic signal(s) and generation of corresponding audio signal(s).
  • a first microphone and/or a second microphone for reception of acoustic signal(s) and generation of corresponding audio signal(s).
  • the hearing aid may comprise an analogue-to-digital (AD) converter unit for converting the audio signal(s), which have been generated by the one or more microphones, to digital signal(s).
  • the AD converter unit may be embedded in the hearing loss processor or may form part of the microphone.
  • the hearing aid may comprise a memory unit.
  • the memory unit may be connected to or may be incorporated in (form part of) the hearing loss processor.
  • the memory unit may be configured for storing data and/or hearing aid parameters, such as configured for storing data for generation of the delay.
  • the hearing aid may comprise a communication unit that may be configured for receiving and/or transmitting signals, for example radio signals wirelessly, e.g. in order to enable the hearing aid to communicate wirelessly with another device, such as a hearing device and/or a wireless interface.
  • the communication may be one-way.
  • the communication unit may be configured for receiving the first audio signal.
  • the hearing aid may comprise a digital-to-analogue (DA) converter unit.
  • the DA converter unit may be incorporated into the hearing loss processor.
  • the hearing aid may comprise a receiver (may also be denoted speaker or loudspeaker) configured for generating the first acoustic signal to the user.
  • a receiver may also be denoted speaker or loudspeaker
  • the one or more microphones may be connected to or integrated with the AD converter unit.
  • the AD converter unit may be connected to or integrated with the hearing loss processor.
  • the AD converter unit may convert or transform audio signals from the one or more microphones and send a corresponding digital audio signal to the hearing loss processor.
  • the hearing loss processor may send control signals to the AD converter unit to configure and control operation of the AD converter unit.
  • the hearing loss processor may be connected to a user interface.
  • the receiver may be connected to the hearing loss processor and/or the DA converter.
  • the communication unit may be connected to the hearing loss processor.
  • the first acoustic signal may comprise a second part generated in response to a signal received by at least one microphone (e.g. of the hearing aid), which signal may be processed (e.g. by the hearing loss processor) in accordance with a hearing loss of the user of the hearing aid.
  • the first and second part of the first acoustic signal may be mixed and presented simultaneously to the user, i.e. presented as a combined signal.
  • the delay unit may be incorporated by the hearing loss processor.
  • a Bluetooth protocol or a similar or anther protocol or dedicated protocol may be used for wireless communication via the communication unit.
  • communication of the first audio signal to the hearing aid may be by wireless communication.
  • signals that are intended for synchronous presentation includes signals that are intended for at least substantially synchronous presentation, such as known from a motion picture with an inter-related sound signal.
  • the first audio signal may be an electromagnetic signal representing a sound signal.
  • the first acoustic signal may be a sound signal.
  • a sound signal may be defined as a signal in form of a mechanical wave that is an oscillation of pressure transmitted through the medium in the ear of the user of hearing aid (which medium is usually air), wherein the signal is comprises frequencies within the range of hearing of the user of the hearing aid and of a level sufficiently strong to be heard by the user of the hearing aid.
  • the system may comprise a control interface configured for enabling the user of the hearing aid to control the delay.
  • Control of the delay may include adjustment and/or setting of the delay. Provision of the control interface may improve the user experience since the delay may be controlled according to current individual needs and/or habits.
  • the control interface may comprise one or more push buttons.
  • the control interface (or another user interface) may be configured for enabling the user of the hearing aid to control the volume of the first acoustic and/or of the first part of the acoustic signal and/or of the second part of the acoustic signal.
  • the control interface may form part of the hearing aid. Having the control interface forming part of the hearing aid may facilitate the control since the control will always be at the user of the hearing aid.
  • the control interface may form part of an auxiliary device configured for remote control of the delay.
  • the auxiliary device may comprise a hearing aid remote control and/or a smart phone or pda etc. Having the control interface forming part of an auxiliary device may enable an improved user-friendly experience and/or a detailed control.
  • the system may be configured for provision of automatic control of the delay by improving synchronization of the at least first part of the first acoustic signal to a second acoustic signal received by at least one microphone of the system, such as at least one microphone of the hearing aid. That is, a signal generated by the at least one microphone of the hearing aid (i.e. generated from the second acoustic signal) may be used for comparing with the first acoustic signal (or a signal derived there from). This may be an advantage if a version of the signal that is intended for synchronous presentation is provided acoustically to the hearing aid, e.g. via a speaker of a TV-set. Provision of automatic control may improve user-friendliness since it may alleviate and/or reduce the needed interaction (e.g. control) by the user of the hearing aid.
  • the automatic control may be configured to be overruled by interaction by the user via the control interface.
  • the automatic control may be configured to be activated and/or deactivated by the user, e.g. via the control interface.
  • the delay may comprise a preset value. Provision of a preset value may improve user-friendliness since it may alleviate the needed interaction (e.g. control) by the user of the hearing aid.
  • the system may comprise an intermediate unit configured for receiving a second audio signal intended for synchronous presentation to a viewer of the video display.
  • the intermediate unit may be configured for transmitting the first audio signal in response to the received second audio signal.
  • the aim of the intermediate unit may be to provide the first audio signal in a form (e.g. protocol) that is intended (or at least usable) for a hearing aid.
  • the delay unit may form part of the intermediate unit. Having the delay unit may forming part of the intermediate unit may reduce or eliminate the need for the hearing aid to provide any delay
  • the delay unit may form part of the hearing aid. This may improve the usability of the system and/or the hearing aid, since the hearing aid then is configured for receiving a signal that needs to be delayed in order to reduce discomfort caused by an off-sync signal.
  • Having both the delay unit and the control interface forming part of the hearing aid may reduce the need for transmission of signals
  • the system may comprise a second delay unit.
  • the delay unit may form part of the hearing aid and the second delay unit may form part of the intermediate unit.
  • the system may comprise a binaural hearing aid system including the hearing aid and a second hearing aid. At least one of the hearing aids of the binaural hearing aid system may be configured for applying a delay such as both of them. Alternatively, or additionally a delay may be applied to the first audio signal, i.e. a delay is included in the signal received by the hearing aids.
  • Control of delay/delays for a binaural hearing aid system may be by means of a common control interface, e.g. a control interface forming part of one of the hearing aids or forming part of an auxiliary device.
  • the delay may be controllable by the user. Having the delay controllable may improve the user experience since the delay may be controlled according to current individual needs and/or habits of the user.
  • the delay may be controllable in steps of at least 2 ms, such as at least 5 ms, such as at least 10 ms, such as at least 15 ms, such as at least 20 ms, such as at least 25 ms. Having a step of a large time scale may reduce the needed interaction with the control interface. Having a step of a low time scale may improve the option to fine-tune the delay.
  • the method may comprise automatic control of the delay by improving synchronization of the at least first part of the first acoustic signal to a second acoustic signal received by at least one microphone, such as at least one microphone of the hearing aid.
  • the system and/or the hearing aid according to the present invention may be configured for carrying out the method according to the present invention.
  • a connecting line may indicate that a transfer of a signal will or may take place between the connected parts.
  • Fig. 1 schematically illustrates a first embodiment of a system 2 according to the present invention for improving synchronization of an acoustic signal to a video display (the video display is not illustrated).
  • the system 2 comprises a hearing aid 4 and a delay unit (not illustrated in Fig. 1 ) that may be integrated in the hearing aid 4.
  • the hearing aid 4 comprises a hearing loss processor (not illustrated in Fig. 1 ) configured for processing in accordance with a hearing loss of a user of the hearing aid 4.
  • the hearing aid 4 is configured for receiving a first audio signal intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the hearing aid 4 is configured for generating a first acoustic signal to be presented to the user of the hearing aid 4.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the delay unit is configured for applying a delay, such that synchronization of the at least first part of the first acous
  • Fig. 2 schematically illustrates a second embodiment of a system 202 according to the present invention for improving synchronization of an acoustic signal to a video display (the video display is not illustrated).
  • the system 202 comprises a hearing aid 204 and a delay unit 6 that forms part of the hearing aid 204.
  • the hearing aid 204 comprises a hearing loss processor (not illustrated in Fig. 2 ) configured for processing in accordance with a hearing loss of a user of the hearing aid 204.
  • the hearing aid 204 is configured for receiving a first audio signal intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the hearing aid 204 is configured for generating a first acoustic signal to be presented to the user of the hearing aid 204.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the delay unit 6 is configured for applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • Fig. 3 schematically illustrates a third embodiment of a system 302 according to the present invention for improving synchronization of an acoustic signal to a video display (the video display is not illustrated).
  • the system 302 comprises a hearing aid 304 and a delay unit 6.
  • the system 302 is configured such that an output from the delay unit 6 may be received by the hearing aid 304 either directly or via another device.
  • the hearing aid 304 comprises a hearing loss processor (not illustrated in Fig. 3 ) configured for processing in accordance with a hearing loss of a user of the hearing aid 304.
  • the hearing aid 304 is configured for receiving a first audio signal intended for synchronous (i.e. at least substantially synchronous) presentation to a viewer of the video display.
  • the system 302 is configured such that the first audio signal may be received by the hearing aid 304 via the delay unit 6.
  • the hearing aid 304 is configured for generating a first acoustic signal to be presented to the user of the hearing aid 304.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the delay unit 6 is configured for applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • the delay unit 6 of the system 302 is situated outside the hearing aid 304. Thus, the first acoustic signal received by the hearing aid will already have been delayed, thus synchronization may have been improved.
  • Fig. 4 schematically illustrates a fourth embodiment of a hearing aid 404 according to the present invention.
  • the hearing aid 404 is configured for improving synchronization of an acoustic signal to a video display (not illustrated).
  • the hearing aid 404 comprises a hearing loss processor 8 configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the hearing aid 404 is configured for receiving a first audio signal being intended for synchronous presentation to a viewer of the video display.
  • the hearing aid 404 is configured for generating a first acoustic signal to be presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • the hearing aid comprises a delay unit 6 configured for applying a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • the hearing aid 404 comprises a first microphone 12 and a receiver (alternatively denoted speaker or loudspeaker) 14.
  • the receiver 14 is configured for generating the first acoustic signal.
  • the hearing aid 404 comprises a communication unit 10 configured for receiving the first audio signal.
  • the communication unit 10 is configured for wireless communication.
  • the wireless communication comprises at least receiving the first audio signal.
  • the delay unit 6 is included in the hearing loss processor 8 of the hearing aid 404.
  • Fig. 5 schematically illustrates a fourth embodiment of a system 502 according to the present invention.
  • the system 502 comprises an intermediate unit 18 configured for receiving a second audio signal intended for synchronous presentation to a viewer of the video display.
  • the intermediate unit 18 is configured for transmitting the first audio signal in response to the received second audio signal.
  • Fig. 6 schematically illustrates an embodiment of the intermediate unit 618 according to the present invention, wherein the delay unit 6 forms part of the intermediate unit 618.
  • the intermediate unit 18 comprises a processor 20, a receiver (i.e. a signal receiving unit) 22, and a transmitter 24.
  • the receiver 22 and the transmitter 24 may be integrated in a transceiver 26.
  • the receiver 22 is configured for receiving the second audio signal.
  • the transmitter 24 is configured for transmitting the first audio signal.
  • the processor 20 incorporates the delay unit 20 and is configured for applying a delay.
  • Fig. 7 schematically illustrates a fifth embodiment of a hearing aid 704 according to the present invention.
  • the hearing aid 704 comprises a control interface 16 configured for enabling the user of the hearing aid 704 to control the delay.
  • the control interface 16 forms part of the hearing aid 704.
  • the control interface may be configured for controlling a delay unit situated outside the hearing aid, which hearing aid may or may not comprise a delay unit.
  • a system according to the present invention which system comprises the hearing aid, accordingly comprises a control interface configured for enabling the user of the hearing aid to control the delay.
  • Fig. 8 schematically illustrates a fifth embodiment of a system 802 according to the present invention.
  • the system 802 comprises a control interface 16 configured for enabling the user of the hearing aid to control the delay.
  • the control interface 16 forms part of an auxiliary device 28 configured for remote control of the delay.
  • the auxiliary device 28 may be considered to form part of the system 802.
  • any parts of the auxiliary device 28 that are not specifically related to the control interface 16 are not considered part of the system 802. This may be the case for a software program running on e.g. a smart phone, where only the specific software program may be considered part of the system 802.
  • Fig. 9 schematically illustrates a sixth embodiment of a system 902 according to the present invention.
  • the system 902 is a combination of the systems 502 and 802, where however, the communication the auxiliary device 28 to the hearing aid 4 may be in form of a communication from the auxiliary device 28 to the intermediate unit 18 instead, or from the auxiliary device 28 to both the hearing aid 4 and the intermediate unit 18. This is indicated by the dashed lines, which represents that communication is by either the one signal way, or the other, or both.
  • the communication may be a wireless electromagnetic communication.
  • Fig. 10 schematically illustrates a seventh embodiment of a system 1002 according to the present invention.
  • the system 1002 i.e. control interface 16 may be used to control the delay via the signal emitter 30, e.g. a TV set, transmitting the second audio signal to the intermediate unit 18, or transmitting the first audio signal directly to the hearing aid, e.g. to a system not including the intermediate unit 18.
  • Fig. 11 schematically illustrates a first embodiment of a method 40 according to the present invention for improving synchronization of an acoustic signal to a video display.
  • the method 40 comprises receiving 42 a first audio signal by a hearing aid.
  • the first audio signal is intended for synchronous presentation to a viewer of the video display.
  • the hearing aid comprises a hearing loss processor configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the method 40 comprises applying 44 a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • the method 40 comprises generating 46 a first acoustic signal by the hearing aid.
  • the first acoustic signal is presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • Fig. 12 schematically illustrates a second embodiment of a method 1240 according to the present invention for improving synchronization of an acoustic signal to a video display.
  • the method 1240 comprises applying 44 a delay, such that synchronization of the at least first part of the first acoustic signal to the video display is improved.
  • the method 1240 comprises receiving 42 a first audio signal by a hearing aid. The first audio signal is intended for synchronous presentation to a viewer of the video display.
  • the hearing aid comprises a hearing loss processor configured for processing in accordance with a hearing loss of a user of the hearing aid.
  • the method 1240 comprises generating 46 a first acoustic signal by the hearing aid.
  • the first acoustic signal is presented to the user of the hearing aid.
  • the first acoustic signal comprises at least a first part being generated in response to the first audio signal.
  • Fig. 13 schematically illustrates an embodiment of a system according to the present invention, wherein the system comprises a binaural hearing aid system.
  • the system comprises a binaural hearing aid system comprises the two hearing aids indicated by "left ear” and "right ear”.
  • Each hearing aid comprises a hearing aid processor (i.e. a hearing loss processor) and a transceiver that comprises a communication unit.
  • Each transceiver may receive the first acoustic signal from a wireless network (i.e. e.g. a protocol) that may be generated by the intermediate unit.
  • a wireless network i.e. e.g. a protocol
  • the hearing aid 4 may be constituted by any of the hearing aids 204, 304, 404, and 704.
  • the hearing aid 204 may be constituted by any of the hearing aids 404, and 704.
  • the intermediate unit 18 may be constituted by the intermediate unit 618.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
EP12166569.9A 2011-12-30 2012-05-03 System, Hörgerät und Verfahren zur Verbesserung der Synchronisierung eines akustischen Signals mit einer Videoanzeige Ceased EP2611217A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012282182A JP5872449B2 (ja) 2011-12-30 2012-12-26 音響信号の映像表示への同期性を向上させるシステム、補聴器、および方法
CN201210592991.8A CN103458346B (zh) 2011-12-30 2012-12-31 用于改善听觉信号与视频显示的同步的***、助听器和方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201170775 2011-12-30
US13/355,189 US9924282B2 (en) 2011-12-30 2012-01-20 System, hearing aid, and method for improving synchronization of an acoustic signal to a video display

Publications (1)

Publication Number Publication Date
EP2611217A1 true EP2611217A1 (de) 2013-07-03

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EP12166569.9A Ceased EP2611217A1 (de) 2011-12-30 2012-05-03 System, Hörgerät und Verfahren zur Verbesserung der Synchronisierung eines akustischen Signals mit einer Videoanzeige

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794201A (en) * 1991-08-23 1998-08-11 Hitachi, Ltd. Digital acoustic signal processing apparatus
US20050069162A1 (en) * 2003-09-23 2005-03-31 Simon Haykin Binaural adaptive hearing aid
EP2071849A1 (de) * 2006-11-07 2009-06-17 Sony Corporation Empfänger, verfahren zur verzögerten informationssendung für empfänger, audioausgabevorrichtung und verzögerungssteuerungsverfahren für audioausgabegeräte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794201A (en) * 1991-08-23 1998-08-11 Hitachi, Ltd. Digital acoustic signal processing apparatus
US20050069162A1 (en) * 2003-09-23 2005-03-31 Simon Haykin Binaural adaptive hearing aid
EP2071849A1 (de) * 2006-11-07 2009-06-17 Sony Corporation Empfänger, verfahren zur verzögerten informationssendung für empfänger, audioausgabevorrichtung und verzögerungssteuerungsverfahren für audioausgabegeräte

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