EP1962554A2 - Appareil auditif doté d'une séparation de signal d'erreur et procédé correspondant - Google Patents

Appareil auditif doté d'une séparation de signal d'erreur et procédé correspondant Download PDF

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Publication number
EP1962554A2
EP1962554A2 EP08101558A EP08101558A EP1962554A2 EP 1962554 A2 EP1962554 A2 EP 1962554A2 EP 08101558 A EP08101558 A EP 08101558A EP 08101558 A EP08101558 A EP 08101558A EP 1962554 A2 EP1962554 A2 EP 1962554A2
Authority
EP
European Patent Office
Prior art keywords
signal
noise
output signal
user
sound
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Withdrawn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
EP08101558A
Other languages
German (de)
English (en)
Other versions
EP1962554A3 (fr
Inventor
Andreas Tiefenau
Robert BÄUML
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sivantos GmbH
Original Assignee
Siemens Audiologische Technik GmbH
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
Application filed by Siemens Audiologische Technik GmbH filed Critical Siemens Audiologische Technik GmbH
Publication of EP1962554A2 publication Critical patent/EP1962554A2/fr
Publication of EP1962554A3 publication Critical patent/EP1962554A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0272—Voice signal separating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/55—Electric hearing aids 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67—Implantable hearing aids or parts thereof not covered by H04R25/606
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/005—Circuits for transducers for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments

Definitions

  • the present invention relates to a hearing device for binaural supply of a user with at least one microphone for receiving an input sound, which has a useful sound and a noise. Moreover, the present invention relates to a corresponding method for binaural supply.
  • a hearing device is understood to mean, in particular, a hearing device, but also a headset, a headset and the like.
  • Hearing aids are portable hearing aids that are used to care for the hearing impaired.
  • different types of hearing aids such as behind-the-ear hearing aids (BTE) and in-the-ear hearing aids (ITO), e.g. also Concha hearing aids or canal hearing aids (CIC), provided.
  • BTE behind-the-ear hearing aids
  • ITO in-the-ear 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. The stimulation of the damaged hearing takes place either mechanically or electrically.
  • Hearing aids have in principle as essential components an input transducer, an amplifier and an output transducer.
  • the input transducer is usually a sound receiver, z. As a microphone, and / or an electromagnetic receiver, for. B. an induction coil.
  • the output transducer is usually used as an electroacoustic transducer, z. 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 are one or more microphones 2 to Built-in sound recording from the environment.
  • 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 of the signal processing unit 3 is carried out by a likewise integrated into the hearing aid housing 1 battery. 5
  • Modern hearing aids can often detect noise. The detection takes place, for example, based on the stationarity of signal components. Once the noise is detected, they can be suppressed by the respective noise canceling mechanism used. However, artifacts often occur during noise suppression. For example, so-called "musical tones" are created by taking out and taking in spectral components. Furthermore, many noise reduction algorithms alienate the signal, which suffers the sound quality.
  • EP 1 640 972 A1 a method of separating the speech of a user from ambient noise.
  • a device which is worn on the ear and has a first, outwardly directed microphone and a second inwardly directed into the ear canal microphone. From the two input signals can be obtained by blind source separation, a voice signal of the user to wirelessly transmit it to a receiver.
  • the object of the present invention is to improve the perception of useful sound in background noise.
  • a hearing device for binaural supply of a user with at least one microphone for receiving an input sound having a useful sound and noise, a Störsignalcommuninides for estimating the noise in the input sound and a signal processing means for providing a first output signal on the basis the noise estimate for the one ear of the user and a second output signal based on the noise estimate for the other ear of the user, wherein the second output signal is provided with a predetermined time offset from the first output signal.
  • the invention provides a method for binaurally supplying a user by receiving an input sound having useful sound and noise, estimating the noise in the input signal, and providing a first output signal based on the estimated noise for the one ear of the user and one second output signal based on the estimated noise for the other ear of the user, wherein the second output signal with respect to the first output signal is provided with a predetermined time offset.
  • the present invention is based on the idea of fundamentally treating interference signals differently than in conventional noise reduction methods.
  • the interference signal should not be removed from the overall signal. Instead, only the spatial localization of the interfering signal is changed. As a result, artifacts are avoided and the sound remains largely intact.
  • the interference signal estimation device preferably has a speech recognition unit, so that the interference signal can be estimated by subtracting a recognized speech signal as useful sound from the input sound.
  • the useful signal is estimated and indirectly the interference signal. This type of estimation of the interference signal is often advantageous if the useful signal is known.
  • the Störsignal inconvenienceinraum may be able to estimate in several frequency bands each a Störsignalanteil. By this bandwise interference signal treatment many times better results can be achieved.
  • the hearing device according to the invention may comprise a directional microphone, are damped with the noise components that do not come from a Nutzschallraum.
  • the hearing device according to the invention or the method according to the invention can also be combined with any other noise suppression measures. This results, for example, a conventional attenuation of a noise together with its spatial displacement.
  • a hearing aid wearer 10 perceives a useful signal 11, here a voice signal, from a useful signal direction.
  • the hearing aid wearer also hears an interference signal 12 from this useful signal direction.
  • speech intelligibility is severely limited in the present example.
  • FIG. 2 As usual in modern hearing aids, the noise is now through the in FIG. 2 Hearing aids, not shown, are estimated in different frequency bands. If a bias of the noise component is detected in a band by the estimation, a noise separation algorithm generates a time lag between the signals on the right and left sides. This results accordingly FIG. 3 a virtual local displacement of the noise source by an angle ⁇ . This means that the speech signal 11 is still perceived from the useful signal direction, but an estimated interference signal 12 'is perceived from another direction.
  • the temporal offset of the signals on the left and right ear by the left and right hearing aid thus leads to a shift in the spatial localization. This supports the separation of interference signal 12, 12 'and useful signal 11 in the central processing (auditory system), since the signal components are imaged in different regions of the auditory cortex (human hearing system).
  • the noise separation takes place without separate analysis in several frequency bands.
  • the separation takes place here from a known type of Useful signal.
  • a speech signal is separated from a residual signal by a broadband.
  • the detection of a speech signal is carried out by a speech recognition algorithm and the recognized speech signal is then subtracted from the total signal, resulting in a residual signal, ie an indirectly estimated noise signal results.
  • the separation of the speech signal from the residual signal now takes place in that the speech signal remains untouched in its spatial information, while the residual signal is shifted horizontally, for example, by 10 to 20 degrees horizontally.
  • the shift is effected as above by the time offset of the two signals intended for the left and the right ear.
  • the human brain is then able to better understand the speech signal because the noise is perceived from another direction.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
EP08101558A 2007-02-22 2008-02-13 Appareil auditif avec séparation du signal perturbateur et procédé correspondant Withdrawn EP1962554A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007008739A DE102007008739A1 (de) 2007-02-22 2007-02-22 Hörvorrichtung mit Störsignaltrennung und entsprechendes Verfahren

Publications (2)

Publication Number Publication Date
EP1962554A2 true EP1962554A2 (fr) 2008-08-27
EP1962554A3 EP1962554A3 (fr) 2012-09-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08101558A Withdrawn EP1962554A3 (fr) 2007-02-22 2008-02-13 Appareil auditif avec séparation du signal perturbateur et procédé correspondant

Country Status (3)

Country Link
US (1) US20080205677A1 (fr)
EP (1) EP1962554A3 (fr)
DE (1) DE102007008739A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444295A2 (fr) 2010-10-25 2012-04-25 Creaciones Marsanz, S.A. Chariot de supermarché

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102428716B (zh) * 2009-06-17 2014-07-30 松下电器产业株式会社 助听器装置
US9185499B2 (en) 2012-07-06 2015-11-10 Gn Resound A/S Binaural hearing aid with frequency unmasking
EP3005362B1 (fr) * 2013-11-15 2021-09-22 Huawei Technologies Co., Ltd. Appareil et procédé permettant d'améliorer une perception d'un signal sonore
GB201615538D0 (en) * 2016-09-13 2016-10-26 Nokia Technologies Oy A method , apparatus and computer program for processing audio signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640972A1 (fr) 2005-12-23 2006-03-29 Phonak AG Système et méthode pour séparer la voix d'un utilisateur de le bruit de l'environnement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2452945C (fr) * 2003-09-23 2016-05-10 Mcmaster University Dispositif auditif binaural adaptatif
US20070147635A1 (en) * 2005-12-23 2007-06-28 Phonak Ag System and method for separation of a user's voice from ambient sound
GB0609248D0 (en) * 2006-05-10 2006-06-21 Leuven K U Res & Dev Binaural noise reduction preserving interaural transfer functions
EP2030476B1 (fr) * 2006-06-01 2012-07-18 Hear Ip Pty Ltd Procede et systeme pour ameliorer l'intelligibilite de sons

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640972A1 (fr) 2005-12-23 2006-03-29 Phonak AG Système et méthode pour séparer la voix d'un utilisateur de le bruit de l'environnement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444295A2 (fr) 2010-10-25 2012-04-25 Creaciones Marsanz, S.A. Chariot de supermarché

Also Published As

Publication number Publication date
DE102007008739A1 (de) 2008-08-28
EP1962554A3 (fr) 2012-09-26
US20080205677A1 (en) 2008-08-28

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