WO2009043550A1 - Casque d'écoute et procédé de compensation active du bruit - Google Patents

Casque d'écoute et procédé de compensation active du bruit Download PDF

Info

Publication number
WO2009043550A1
WO2009043550A1 PCT/EP2008/008217 EP2008008217W WO2009043550A1 WO 2009043550 A1 WO2009043550 A1 WO 2009043550A1 EP 2008008217 W EP2008008217 W EP 2008008217W WO 2009043550 A1 WO2009043550 A1 WO 2009043550A1
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
active noise
noise compensation
compensation
output signal
Prior art date
Application number
PCT/EP2008/008217
Other languages
German (de)
English (en)
Inventor
Markus Kuhr
Original Assignee
Sennheiser Electronic Gmbh & Co. Kg
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 Sennheiser Electronic Gmbh & Co. Kg filed Critical Sennheiser Electronic Gmbh & Co. Kg
Publication of WO2009043550A1 publication Critical patent/WO2009043550A1/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets

Definitions

  • the present invention relates to a handset and a method for active noise compensation
  • DE 199 26 552 A1 shows a headphone with an electro-acoustic transducer, a noise compensation unit and a microphone for recording environmental alarm
  • BESTATIGUNGSKOPIE The signal from the microphone is used for active noise compensation and can be reproduced via the converter.
  • a handset which has at least one electroacoustic transducer, an active noise compensation unit for active noise compensation and a microphone for recording ambient noise, in particular ambient noise.
  • the output signal of the microphone is forwarded to the active noise compensation unit so that an active noise compensation can be performed.
  • the microphone is used to record ambient noise, in particular speech signals, which can be reproduced via the electroacoustic transducer.
  • the handset further includes an internal microphone whose output is used by the active noise cancellation unit for active noise cancellation.
  • the signals recorded by the microphone are used in a compensation mode for active noise cancellation by the noise compensation unit, and in a communication mode, the signals recorded by the microphone are output to the at least one electroacoustic transducer and reproduced.
  • the invention also relates to a method for active noise compensation.
  • a microphone located in a receiver serves to record ambient noise or ambient noise.
  • the output signal of the microphone is used for active noise compensation.
  • the output signal of the microphone can also be forwarded to an electroacoustic transducer in the listener to be reproduced there.
  • Ambient noise, in particular ambient noise is recorded by means of an internal microphone and forwarded for active noise compensation.
  • the invention relates to the idea of providing a headphone with an active noise compensation unit, wherein the headset likewise has a "talk-through” Functionality has To configure this "Talk Through" -Funkt ⁇ onal ⁇ tat the need for the active noise compensation microphone is used to record voice signals, which can then be reproduced on the electroacoustic transducer of the headphone
  • the headphone has at least one electro-acoustic transducer for playback of audio signals and a Compensation microphone for recording the environmental alarm, wherein the audio signals recorded by the microphone are supplied to the active Larmkompensationstechnik and the active Larmkompensationstechnik can output a Larmkompensêtêtators signal to the at least one electroacoustic transducer for the "talk through" -Funkt ⁇ onal ⁇ tat the compensation microphone is used, so that the recorded by the microphone signals are then not forwarded to the noise compensation unit for active noise compensation, but to the electroacoustic transducer
  • FIG. 1 shows a schematic representation of a headphone according to a first exemplary embodiment
  • FIG. 2 shows a schematic representation of a headphone according to a second exemplary embodiment
  • FIG. 3 shows a schematic representation of a headphone according to a third exemplary embodiment
  • the headphone has a headball B, at least one electroacoustic transducer W, an ear pad O, a compensation microphone KM, which is arranged in or on the hearing aid housing, and an active noise compensation unit LKU for active noise compensation
  • the microphone KM can, for example, be arranged on the outside of the hearing aid housing.
  • the output signal of the compensation microphone can be fed to the active noise compensation unit so that it performs a corresponding noise compensation based on the output signal
  • the output microphone KM can also be forwarded to the electro-acoustic transducer W to be output there.
  • the output signal of the compensation microphone can be switched to the active Larmkompensationshim or to the electro-acoustic transducer
  • the output of the internal microphone can also be to the active
  • the active noise compensation unit can receive the output signal of the internal microphone and / or the output signal of the compensation microphone KM By switching the compensation microphone, a so-called "talk through" -Funkt ⁇ onal ⁇ tat be guaranteed, ie a voice signal is from the compensation microphone recorded and passed on to the electro-acoustic reproduction converter
  • FIG. 2 shows a schematic representation of a headphone according to a second exemplary embodiment.
  • FIG. 2 shows some of the electrical or electronic components in order to describe an exemplary signal flow in more detail according to the second exemplary embodiment.
  • An (external) audio unit A is used for supplying or receiving a to be reproduced Audiosignais
  • the output of the audio unit A is fed to a filter H (z) H2 and a filter H (z) H4
  • the headphone further comprises at least one electroacoustic transducer W, which is disposed within the Horergehauses, an internal microphone Ml, which is also in the
  • the output signals of the two microphones Ml, MA are each amplified via amplifiers V3 and V2 amplified by the amplifier V2 output signals of the microphone MA are a vari
  • the output signal of the microphone M1 amplified by the amplifier V3 is added in a summing unit S1 to the output signal of the filter H2 and the output signal of the filter H1, the output signal of
  • a switch S is further provided between the amplifier V2 and the filter H1.
  • the switch S When the switch S is closed, the "talk through" function of the headphone can be utilized and that recorded by the outside microphone MA Audio signal is reproduced by the electro-acoustic transducer W For this purpose, the variable filter VH is switched
  • the internal microphone Ml is used here as a compensation microphone or as a control microphone for active noise compensation
  • the external microphone MA is used to provide the "talk througlY" function
  • the external microphone can optionally also be used for active noise compensation
  • FIG. 3 shows a schematic representation of a headphone according to a third exemplary embodiment.
  • the headphone according to the third exemplary embodiment has only a single microphone which serves both as a compensation or control microphone and as a microphone for implementing the "talk through" functionality
  • Headphone thus has an electroacoustic transducer W within the Horergehau- ses, a microphone MA outside the Horergehause, an audio unit A, a Versterk- V2 to Verocc the output of the microphone MA and a Verstarker V1 for Verintestin the audio signal to be reproduced on Behind the amplifier V2 is the variable filter Var H (z) VH. Behind the audio unit A is provided a filter H (z) H4. In the summing unit S2, the output of the variable filter VH and the output of the filter H4 are added together, and the output of the summing purity S2 is output to the amplifier V1
  • variable filter VH If the microphone MA used for the active noise compensation is to be used to implement the "talk through" radio frequency, then the variable filter VH must be switched over

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Headphones And Earphones (AREA)

Abstract

La présente invention concerne un casque d'écoute, lequel présente au moins un convertisseur électroacoustique (W), une unité de compensation active du bruit (LKU) pour la compensation active du bruit et un microphone (KM, MA) pour l'enregistrement du bruit ambiant. Le signal de sortie du microphone (MA) est transmis à l'unité de compensation active du bruit (LKU) afin qu'une compensation active du bruit puisse être effectuée. Le microphone (MA) sert à l'enregistrement de signaux vocaux, lesquels peuvent être reproduits par le convertisseur électroacoustique (W). Le casque d'écoute comporte en outre un microphone interne dont le signal de sortie est acheminé vers l'unité de compensation active du bruit.
PCT/EP2008/008217 2007-09-27 2008-09-26 Casque d'écoute et procédé de compensation active du bruit WO2009043550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007046593.0A DE102007046593B4 (de) 2007-09-27 2007-09-27 Hörer und Verfahren zur aktiven Lärmkompensation
DE102007046593.0 2007-09-27

Publications (1)

Publication Number Publication Date
WO2009043550A1 true WO2009043550A1 (fr) 2009-04-09

Family

ID=40224023

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/008217 WO2009043550A1 (fr) 2007-09-27 2008-09-26 Casque d'écoute et procédé de compensation active du bruit

Country Status (2)

Country Link
DE (1) DE102007046593B4 (fr)
WO (1) WO2009043550A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129219A1 (fr) * 2009-04-28 2010-11-11 Bose Corporation Anr à gain adaptatif
US8155334B2 (en) 2009-04-28 2012-04-10 Bose Corporation Feedforward-based ANR talk-through
US8208650B2 (en) 2009-04-28 2012-06-26 Bose Corporation Feedback-based ANR adjustment responsive to environmental noise levels
WO2014070995A1 (fr) * 2012-11-02 2014-05-08 Bose Corporation Fourniture simultanée d'audio et de son ambiant dans un casque d'écoute anr
US8798283B2 (en) 2012-11-02 2014-08-05 Bose Corporation Providing ambient naturalness in ANR headphones
US9020160B2 (en) 2012-11-02 2015-04-28 Bose Corporation Reducing occlusion effect in ANR headphones

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815582A (en) * 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
US5937070A (en) * 1990-09-14 1999-08-10 Todter; Chris Noise cancelling systems
DE19926552A1 (de) * 1999-06-11 2000-12-14 Sennheiser Electronic Kopfhörer mit Mikrofon
US20050276421A1 (en) * 2004-06-15 2005-12-15 Bose Corporation Noise reduction headset

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5937070A (en) * 1990-09-14 1999-08-10 Todter; Chris Noise cancelling systems
US5815582A (en) * 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
DE19926552A1 (de) * 1999-06-11 2000-12-14 Sennheiser Electronic Kopfhörer mit Mikrofon
US20050276421A1 (en) * 2004-06-15 2005-12-15 Bose Corporation Noise reduction headset

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129219A1 (fr) * 2009-04-28 2010-11-11 Bose Corporation Anr à gain adaptatif
US8155334B2 (en) 2009-04-28 2012-04-10 Bose Corporation Feedforward-based ANR talk-through
US8208650B2 (en) 2009-04-28 2012-06-26 Bose Corporation Feedback-based ANR adjustment responsive to environmental noise levels
EP2533239A1 (fr) * 2009-04-28 2012-12-12 Bose Corporation ANR à gain adaptatif
CN103366728A (zh) * 2009-04-28 2013-10-23 伯斯有限公司 具有自适应增益的anr
EP2793224A1 (fr) * 2009-04-28 2014-10-22 Bose Corporation Circuit de Réduction de Bruit Active avec contrôle de communication
WO2014070995A1 (fr) * 2012-11-02 2014-05-08 Bose Corporation Fourniture simultanée d'audio et de son ambiant dans un casque d'écoute anr
US8798283B2 (en) 2012-11-02 2014-08-05 Bose Corporation Providing ambient naturalness in ANR headphones
US9020160B2 (en) 2012-11-02 2015-04-28 Bose Corporation Reducing occlusion effect in ANR headphones

Also Published As

Publication number Publication date
DE102007046593A1 (de) 2009-04-16
DE102007046593B4 (de) 2022-05-12

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