AT147961T - ACTIVE NOISE REDUCTION SYSTEM - Google Patents

ACTIVE NOISE REDUCTION SYSTEM

Info

Publication number
AT147961T
AT147961T AT89907611T AT89907611T AT147961T AT 147961 T AT147961 T AT 147961T AT 89907611 T AT89907611 T AT 89907611T AT 89907611 T AT89907611 T AT 89907611T AT 147961 T AT147961 T AT 147961T
Authority
AT
Austria
Prior art keywords
noise reduction
active noise
active
reduction
Prior art date
Application number
AT89907611T
Other languages
English (en)
Inventor
Edwin Langberg
F Gerald Caruso
Original Assignee
Bose Corp
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 to US07/210,791 priority Critical patent/US4985925A/en
Application filed by Bose Corp filed Critical Bose Corp
Publication of AT147961T publication Critical patent/AT147961T/de

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1781Methods 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
    • G10K11/17821Methods 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
    • G10K11/17823Reference signals, e.g. ambient acoustic environment
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1783Methods 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
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1785Methods, e.g. algorithms; Devices
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1785Methods, e.g. algorithms; Devices
    • G10K11/17853Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1785Methods, e.g. algorithms; Devices
    • G10K11/17861Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1787General system configurations
    • G10K11/17879General system configurations using both a reference signal and an error signal
    • G10K11/17881General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00Methods or devices for treatment of the ears, e.g. surgical; Protective devices for the ears, carried on the body or in the hand ; Non-electric hearing aids
    • A61F11/06Protective devices for the ears
    • A61F11/14Protective devices for the ears external, e.g. earcaps or earmuffs
    • A61F2011/145Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/108Communication systems, e.g. where useful sound is kept and noise is cancelled
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/108Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081Earphones, e.g. for telephones, ear protectors or headsets
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30Means
    • G10K2210/301Computational
    • G10K2210/3013Analogue, i.e. using analogue computers or circuits
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30Means
    • G10K2210/301Computational
    • G10K2210/3045Multiple acoustic inputs, single acoustic output
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30Means
    • G10K2210/321Physical
    • G10K2210/3228Shunts
AT89907611T 1988-06-24 1989-06-22 ACTIVE NOISE REDUCTION SYSTEM AT147961T (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/210,791 US4985925A (en) 1988-06-24 1988-06-24 Active noise reduction system

Publications (1)

Publication Number Publication Date
AT147961T true AT147961T (de) 1997-02-15

Family

ID=22784274

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89907611T AT147961T (de) 1988-06-24 1989-06-22 ACTIVE NOISE REDUCTION SYSTEM

Country Status (6)

Country Link
US (1) US4985925A (de)
EP (1) EP0423172B1 (de)
JP (1) JP2989843B2 (de)
AT (1) AT147961T (de)
DE (1) DE68927707T2 (de)
WO (1) WO1989012432A1 (de)

Families Citing this family (175)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138664A (en) * 1989-03-25 1992-08-11 Sony Corporation Noise reducing device
US5117461A (en) * 1989-08-10 1992-05-26 Mnc, Inc. Electroacoustic device for hearing needs including noise cancellation
US5305387A (en) * 1989-10-27 1994-04-19 Bose Corporation Earphoning
GB9003938D0 (en) * 1990-02-21 1990-04-18 Ross Colin F Noise reducing system
JPH06503897A (de) * 1990-09-14 1994-04-28
JP2601418Y2 (ja) * 1991-02-28 1999-11-22 株式会社ケンウッド 電子式消音装置及び電子式消音装置付き音声再生装置
US5267321A (en) * 1991-11-19 1993-11-30 Edwin Langberg Active sound absorber
US5251263A (en) * 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
US5343523A (en) * 1992-08-03 1994-08-30 At&T Bell Laboratories Telephone headset structure for reducing ambient noise
US5345509A (en) * 1992-08-04 1994-09-06 Stanton Magnetics, Inc. Transducer with ear canal pickup
US5426719A (en) * 1992-08-31 1995-06-20 The United States Of America As Represented By The Department Of Health And Human Services Ear based hearing protector/communication system
CA2101500C (en) * 1992-09-30 1996-12-17 Charles Spurgeon Bartlett Noise-cancelling telephone handset
US5715321A (en) * 1992-10-29 1998-02-03 Andrea Electronics Coporation Noise cancellation headset for use with stand or worn on ear
US5732143A (en) * 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
US5673325A (en) * 1992-10-29 1997-09-30 Andrea Electronics Corporation Noise cancellation apparatus
CA2107316C (en) * 1992-11-02 1996-12-17 Roger David Benning Electronic cancellation of ambient noise in telephone receivers
WO1994011953A2 (en) * 1992-11-11 1994-05-26 Noise Buster Technology Active noise cancellation system
US5862234A (en) * 1992-11-11 1999-01-19 Todter; Chris Active noise cancellation system
EP0671895B1 (de) * 1992-12-07 1998-05-13 Andromed Inc. Elektronisches stethoskop
GB2274757A (en) * 1993-01-28 1994-08-03 Secr Defence Ear defenders employing active noise control
WO1994030029A1 (en) * 1993-06-03 1994-12-22 Noise Cancellation Technologies, Inc. Hybrid noise cancellation system for headsets
US5452361A (en) * 1993-06-22 1995-09-19 Noise Cancellation Technologies, Inc. Reduced VLF overload susceptibility active noise cancellation headset
ES2281160T3 (es) * 1993-06-23 2007-09-16 Noise Cancellation Technologies, Inc. Sistema de anulacion de ruido activo de ganancia variable con deteccion de ruido residual mejorada.
US7103188B1 (en) 1993-06-23 2006-09-05 Owen Jones Variable gain active noise cancelling system with improved residual noise sensing
US5497426A (en) * 1993-11-15 1996-03-05 Jay; Gregory D. Stethoscopic system for high-noise environments
US5492129A (en) * 1993-12-03 1996-02-20 Greenberger; Hal Noise-reducing stethoscope
CA2245788A1 (en) * 1996-02-08 1997-08-14 Hal Greenberger Noise-reducing stethoscope
US5524058A (en) * 1994-01-12 1996-06-04 Mnc, Inc. Apparatus for performing noise cancellation in telephonic devices and headwear
US5604813A (en) * 1994-05-02 1997-02-18 Noise Cancellation Technologies, Inc. Industrial headset
US5748743A (en) * 1994-08-01 1998-05-05 Ear Craft Technologies Air conduction hearing device
US6466678B1 (en) 1994-11-30 2002-10-15 Etymotic Research, Inc. Hearing aid having digital damping
US5812679A (en) * 1994-11-30 1998-09-22 Killion; Mead Electronic damper circuit for a hearing aid and a method of using the same
US5467775A (en) * 1995-03-17 1995-11-21 University Research Engineers & Associates Modular auscultation sensor and telemetry system
US5740258A (en) * 1995-06-05 1998-04-14 Mcnc Active noise supressors and methods for use in the ear canal
US6683965B1 (en) 1995-10-20 2004-01-27 Bose Corporation In-the-ear noise reduction headphones
US6026170A (en) * 1995-11-27 2000-02-15 Minnesota Mining And Manufacturing Company Electronic stethoscope with idealized bell and idealized diaphragm modes
US7162039B1 (en) 1996-02-23 2007-01-09 Matthew G. Callahan Noise barrier apparatus having acoustic wave damping cushions
AU1964197A (en) * 1996-02-23 1997-09-10 University Research Engineers And Associates, Inc. In-ear-canal audio receiver and stethoscope having the same
US6050950A (en) 1996-12-18 2000-04-18 Aurora Holdings, Llc Passive/non-invasive systemic and pulmonary blood pressure measurement
DE29707974U1 (de) * 1997-05-02 1997-08-28 Muehlhans Matthias Medizinisch-Technisches Gerät zur Tinnitustherapie
FR2766953B1 (fr) * 1997-07-29 1999-10-01 Renault SOUND VOLUME CONTROL DEVICE
DE19743376A1 (de) * 1997-09-30 1999-04-22 Siemens Ag Schallwellentherapieeinrichtung
US6434239B1 (en) * 1997-10-03 2002-08-13 Deluca Michael Joseph Anti-sound beam method and apparatus
US6353671B1 (en) * 1998-02-05 2002-03-05 Bioinstco Corp. Signal processing circuit and method for increasing speech intelligibility
US6232994B1 (en) 1998-09-29 2001-05-15 Intermec Ip Corp. Noise cancellation system for a thermal printer
US6363345B1 (en) 1999-02-18 2002-03-26 Andrea Electronics Corporation System, method and apparatus for cancelling noise
US6480610B1 (en) 1999-09-21 2002-11-12 Sonic Innovations, Inc. Subband acoustic feedback cancellation in hearing aids
US6594367B1 (en) 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
US6757395B1 (en) 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
US7181027B1 (en) 2000-05-17 2007-02-20 Cisco Technology, Inc. Noise suppression in communications systems
US6931292B1 (en) 2000-06-19 2005-08-16 Jabra Corporation Noise reduction method and apparatus
NO314429B1 (no) * 2000-09-01 2003-03-17 Nacre As Öreterminal med mikrofon for naturlig stemmegjengivelse
NO313730B1 (no) * 2000-09-01 2002-11-18 Nacre As Öreterminal med mikrofon for stemmeopptak
US6567524B1 (en) 2000-09-01 2003-05-20 Nacre As Noise protection verification device
US7039195B1 (en) 2000-09-01 2006-05-02 Nacre As Ear terminal
US6754359B1 (en) 2000-09-01 2004-06-22 Nacre As Ear terminal with microphone for voice pickup
US6661901B1 (en) 2000-09-01 2003-12-09 Nacre As Ear terminal with microphone for natural voice rendition
NO314380B1 (no) * 2000-09-01 2003-03-10 Nacre As Öreterminal
NO313400B1 (no) * 2000-09-01 2002-09-23 Nacre As Öreterminal for stöykontroll
US6801629B2 (en) 2000-12-22 2004-10-05 Sonic Innovations, Inc. Protective hearing devices with multi-band automatic amplitude control and active noise attenuation
DK1251714T4 (en) * 2001-04-12 2015-07-20 Sound Design Technologies Ltd Digital hearing aid system
US7289626B2 (en) 2001-05-07 2007-10-30 Siemens Communications, Inc. Enhancement of sound quality for computer telephony systems
US6717537B1 (en) 2001-06-26 2004-04-06 Sonic Innovations, Inc. Method and apparatus for minimizing latency in digital signal processing systems
DK1479265T3 (da) * 2002-02-28 2008-02-18 Nacre As Stemmeregistrerings- og skelneapparat
US20050018859A1 (en) * 2002-03-27 2005-01-27 Buchholz Jeffrey C. Optically driven audio system
US20030228019A1 (en) * 2002-06-11 2003-12-11 Elbit Systems Ltd. Method and system for reducing noise
EP1537759B1 (de) * 2002-09-02 2014-07-23 Oticon A/S Methode für das entgegenwirken von okklusionseffekten
US7406179B2 (en) * 2003-04-01 2008-07-29 Sound Design Technologies, Ltd. System and method for detecting the insertion or removal of a hearing instrument from the ear canal
US7024010B2 (en) * 2003-05-19 2006-04-04 Adaptive Technologies, Inc. Electronic earplug for monitoring and reducing wideband noise at the tympanic membrane
US7809150B2 (en) * 2003-05-27 2010-10-05 Starkey Laboratories, Inc. Method and apparatus to reduce entrainment-related artifacts for hearing assistance systems
DE102004039066B4 (de) * 2003-09-16 2015-03-12 Volkswagen Ag Audiosystem für ein Kraftfahrzeug
EP1527761A1 (de) * 2003-10-30 2005-05-04 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Ohrstöpsel
US7590254B2 (en) * 2003-11-26 2009-09-15 Oticon A/S Hearing aid with active noise canceling
SE526944C2 (sv) * 2003-11-27 2005-11-22 Peltor Ab Hörselskydd
US20050238181A1 (en) * 2003-11-27 2005-10-27 Sigvard Nilsson Hearing protector
US20050117754A1 (en) * 2003-12-02 2005-06-02 Atsushi Sakawaki Active noise cancellation helmet, motor vehicle system including the active noise cancellation helmet, and method of canceling noise in helmet
US7369670B2 (en) 2004-08-25 2008-05-06 Phonak Ag Earplug and method for manufacturing the same
EP1629808A1 (de) * 2004-08-25 2006-03-01 Phonak Ag Ohrstöpsel und Verfahren zu dessen Herstellung
EP1795045B1 (de) * 2004-10-01 2012-11-07 Hear Ip Pty Ltd Akustisch transparentes Okklusionsreduktionssystem und -verfahren
US7201323B2 (en) * 2004-12-10 2007-04-10 Mitek Systems, Inc. System and method for check fraud detection using signature validation
US20060233411A1 (en) * 2005-02-14 2006-10-19 Shawn Utigard Hearing enhancement and protection device
DE102005016204A1 (de) * 2005-04-07 2006-10-12 Sennheiser Electronic Gmbh & Co. Kg Kopfhörer zum Anschluss an eine externe aktive Lärmkompensationsvorrichtung
SE528515C2 (sv) * 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa med mikrofonanordning
SE528519C2 (sv) * 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa
SE528514C2 (sv) 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa
US20060262938A1 (en) * 2005-05-18 2006-11-23 Gauger Daniel M Jr Adapted audio response
US8964997B2 (en) * 2005-05-18 2015-02-24 Bose Corporation Adapted audio masking
JP4892000B2 (ja) * 2005-09-29 2012-03-07 本田技研工業株式会社 モータおよび関節コントローラのダイナミクスをキャンセルするシステム
WO2007054807A2 (en) 2005-11-11 2007-05-18 Phitek Systems Limited Noise cancellation earphone
US8571227B2 (en) 2005-11-11 2013-10-29 Phitek Systems Limited Noise cancellation earphone
US20070206825A1 (en) * 2006-01-20 2007-09-06 Zounds, Inc. Noise reduction circuit for hearing aid
US8116473B2 (en) 2006-03-13 2012-02-14 Starkey Laboratories, Inc. Output phase modulation entrainment containment for digital filters
US8553899B2 (en) * 2006-03-13 2013-10-08 Starkey Laboratories, Inc. Output phase modulation entrainment containment for digital filters
SE530023C2 (sv) * 2006-06-20 2008-02-12 Peltor Ab Hörselkåpa
JP2008032767A (ja) * 2006-07-26 2008-02-14 Matsushita Electric Ind Co Ltd 能動騒音低減システム
DK2080408T3 (da) 2006-10-23 2012-11-19 Starkey Lab Inc Undgåelse af medrivning med et auto-regressivt filter
WO2008051569A2 (en) 2006-10-23 2008-05-02 Starkey Laboratories, Inc. Entrainment avoidance with pole stabilization
US8509465B2 (en) * 2006-10-23 2013-08-13 Starkey Laboratories, Inc. Entrainment avoidance with a transform domain algorithm
US8027481B2 (en) * 2006-11-06 2011-09-27 Terry Beard Personal hearing control system and method
US20080137878A1 (en) * 2006-12-12 2008-06-12 Killion Mead C Electronic method for reducing noise in the ear canal using feed forward techniques
US8652040B2 (en) 2006-12-19 2014-02-18 Valencell, Inc. Telemetric apparatus for health and environmental monitoring
TWI310177B (en) * 2006-12-29 2009-05-21 Ind Tech Res Inst Noise canceling device and method thereof
US20080187147A1 (en) * 2007-02-05 2008-08-07 Berner Miranda S Noise reduction systems and methods
DE102007037561A1 (de) * 2007-08-09 2009-02-19 Ceotronics Aktiengesellschaft Audio . Video . Data Communication Schallwandler zur Übertragung von Audiosignalen
US9558732B2 (en) * 2007-08-15 2017-01-31 Iowa State University Research Foundation, Inc. Active noise control system
ES2522316T3 (es) 2007-09-24 2014-11-14 Sound Innovations, Llc Dispositivo intraauricular digital electrónico de cancelación de ruido y comunicación
US8666085B2 (en) * 2007-10-02 2014-03-04 Phitek Systems Limited Component for noise reducing earphone
GB2456501B (en) * 2007-11-13 2009-12-23 Wolfson Microelectronics Plc Ambient noise-reduction system
US20090136052A1 (en) * 2007-11-27 2009-05-28 David Clark Company Incorporated Active Noise Cancellation Using a Predictive Approach
US9247346B2 (en) 2007-12-07 2016-01-26 Northern Illinois Research Foundation Apparatus, system and method for noise cancellation and communication for incubators and related devices
EP2232483B1 (de) * 2007-12-28 2012-02-22 Frank Joseph Pompei Schallfeldsteuerung
US8184821B2 (en) * 2008-01-28 2012-05-22 Industrial Technology Research Institute Acoustic transducer device
SE532379C2 (sv) * 2008-03-26 2009-12-29 3M Svenska Ab Hörselskydd innefattande behandlingsanordningar för behandling av repeterbart och icke-repeterbart buller
US8079366B2 (en) * 2008-04-03 2011-12-20 Collins Timothy R Magnetic earplug
SE531656E5 (sv) * 2008-05-12 2011-04-26 3M Svenska Ab Ear protection
US20090307730A1 (en) * 2008-05-29 2009-12-10 Mark Donaldson Media enhancement module
US9124708B2 (en) * 2008-07-28 2015-09-01 Broadcom Corporation Far-end sound quality indication for telephone devices
US9020158B2 (en) * 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US8135140B2 (en) * 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
US20100132721A1 (en) * 2008-12-02 2010-06-03 Rpb, Ltd. Respirator helmet with integrated hearing protection
US8218783B2 (en) * 2008-12-23 2012-07-10 Bose Corporation Masking based gain control
EP2202998B1 (de) * 2008-12-29 2014-02-26 Nxp B.V. Vorrichtung und Verfahren zur Verarbeitung von Audiodaten
US8718289B2 (en) * 2009-01-12 2014-05-06 Harman International Industries, Incorporated System for active noise control with parallel adaptive filter configuration
DE102009005302A1 (de) 2009-01-16 2010-07-22 Sennheiser Electronic Gmbh & Co. Kg Schutzhelm und Vorrichtung zur aktiven Störschallunterdrückung
US20110002474A1 (en) * 2009-01-29 2011-01-06 Graeme Colin Fuller Active Noise Reduction System Control
US8229125B2 (en) * 2009-02-06 2012-07-24 Bose Corporation Adjusting dynamic range of an audio system
EP2226902A3 (de) * 2009-03-06 2013-03-13 Phitek Systems Limited Bordunterhaltungssystemverbinder
US8189799B2 (en) * 2009-04-09 2012-05-29 Harman International Industries, Incorporated System for active noise control based on audio system output
US8199924B2 (en) * 2009-04-17 2012-06-12 Harman International Industries, Incorporated System for active noise control with an infinite impulse response filter
US20110075331A1 (en) * 2009-05-04 2011-03-31 Nigel Greig Media Player Holder
US8077873B2 (en) * 2009-05-14 2011-12-13 Harman International Industries, Incorporated System for active noise control with adaptive speaker selection
US20110188668A1 (en) * 2009-09-23 2011-08-04 Mark Donaldson Media delivery system
US8027112B2 (en) * 2009-10-30 2011-09-27 Hitachi Asia Ltd. Low frequency booster for RV/shock/friction disturbance rejection
WO2011061483A2 (en) 2009-11-23 2011-05-26 Incus Laboratories Limited Production of ambient noise-cancelling earphones
US9818394B2 (en) * 2009-11-30 2017-11-14 Graeme Colin Fuller Realisation of controller transfer function for active noise cancellation
US20110158420A1 (en) * 2009-12-24 2011-06-30 Nxp B.V. Stand-alone ear bud for active noise reduction
US8659170B2 (en) * 2010-01-20 2014-02-25 Taiwan Semiconductor Manufacturing Company, Ltd. Semiconductor device having conductive pads and a method of manufacturing the same
US9781514B2 (en) 2010-03-25 2017-10-03 K&E Holdings, LLC Stereo audio headphone apparatus
US20110235816A1 (en) * 2010-03-25 2011-09-29 Abdelhafid Bouhraoua Selective filtering earplugs
US8923523B2 (en) 2010-03-25 2014-12-30 King Fahd University Of Petroleum And Minerals Selective filtering earplugs
US9654885B2 (en) 2010-04-13 2017-05-16 Starkey Laboratories, Inc. Methods and apparatus for allocating feedback cancellation resources for hearing assistance devices
EP2572408B1 (de) 2010-05-17 2021-07-07 Thales Avionics, Inc. Modulare benutzeroberflächenvorrichtung für flugzeugpassagiersitze
US8594353B2 (en) 2010-09-22 2013-11-26 Gn Resound A/S Hearing aid with occlusion suppression and subsonic energy control
EP2434780B1 (de) 2010-09-22 2016-04-13 GN ReSound A/S Hörgerät mit Okklusionsunterdrückung und Infraschallenergiekontrolle
US8494201B2 (en) 2010-09-22 2013-07-23 Gn Resound A/S Hearing aid with occlusion suppression
EP2471710A1 (de) 2010-11-15 2012-07-04 Nigel Greig Medienverteilungssystem
DE102011003470A1 (de) * 2011-02-01 2012-08-02 Sennheiser Electronic Gmbh & Co. Kg Headset und Hörer
JP2014533444A (ja) * 2011-06-01 2014-12-11 フィテック システムズ リミテッドPhitek Systems Limited 能動騒音低減を組み込むインイヤー型装置
US9269342B2 (en) * 2012-05-25 2016-02-23 Bose Corporation In-ear active noise reduction earphone
US9082388B2 (en) 2012-05-25 2015-07-14 Bose Corporation In-ear active noise reduction earphone
US9190071B2 (en) 2012-09-14 2015-11-17 Sikorsky Aircraft Corporation Noise suppression device, system, and method
DE102013007481B4 (de) 2013-04-29 2014-12-04 DELUXE MCB UG (haftungsbeschränkt) Vorrichtung zur Schallreduzierung in Gasträumen
CN105474661B (zh) 2013-05-02 2019-07-09 布佳通有限公司 耳机有源噪声控制
KR101984356B1 (ko) 2013-05-31 2019-12-02 노키아 테크놀로지스 오와이 오디오 장면 장치
US9837066B2 (en) 2013-07-28 2017-12-05 Light Speed Aviation, Inc. System and method for adaptive active noise reduction
US9463118B2 (en) 2013-08-06 2016-10-11 Applied Research Associates, Inc. High fidelity blast hearing protection
GB2517434B (en) * 2013-08-19 2015-11-18 Racal Acoustics Ltd Hearing protection device
US9180055B2 (en) 2013-10-25 2015-11-10 Harman International Industries, Incorporated Electronic hearing protector with quadrant sound localization
US9478229B2 (en) 2013-12-10 2016-10-25 Massachusetts Institute Of Technology Methods and apparatus for recording impulsive sounds
US9699542B2 (en) 2014-10-03 2017-07-04 Analog Devices Global Headset amplification circuit with error voltage suppression
JP6478317B2 (ja) * 2014-12-24 2019-03-06 学校法人 東洋大学 外耳道装着型イヤホンマイク
US20170006380A1 (en) * 2015-02-17 2017-01-05 Garth W. Gobeli Front Enclosed In-Ear Earbuds
US9565491B2 (en) * 2015-06-01 2017-02-07 Doppler Labs, Inc. Real-time audio processing of ambient sound
WO2017058192A1 (en) 2015-09-30 2017-04-06 Hewlett-Packard Development Company, L.P. Suppressing ambient sounds
KR20170123818A (ko) * 2016-04-29 2017-11-09 삼성전자주식회사 마이크를 실장하는 웨어러블 음향 장치
US9871605B2 (en) 2016-05-06 2018-01-16 Science Applications International Corporation Self-contained tactical audio distribution device
KR101756674B1 (ko) 2016-05-27 2017-07-25 주식회사 이엠텍 보청기 기능의 능동 소음 제거 헤드셋 장치
US10015581B2 (en) 2016-06-14 2018-07-03 Bose Corporation Feedback microphone adaptor for noise canceling headphone
US9766481B1 (en) 2016-08-08 2017-09-19 Google Inc. Closed loop audio processing for bone conduction transducer
US20180063635A1 (en) * 2016-09-01 2018-03-01 Audeze, Llc Non-axisymmetric and non-horn phase plugs
US10264999B2 (en) 2016-09-07 2019-04-23 Massachusetts Institute Of Technology High fidelity systems, apparatus, and methods for collecting noise exposure data
US11045163B2 (en) 2017-09-19 2021-06-29 Ausculsciences, Inc. Method of detecting noise in auscultatory sound signals of a coronary-artery-disease detection system
US10951996B2 (en) 2018-06-28 2021-03-16 Gn Hearing A/S Binaural hearing device system with binaural active occlusion cancellation
EP3672279A1 (de) 2018-12-19 2020-06-24 Sonova AG Hörgerät mit aktiver rückkopplungssteuerung
US10595151B1 (en) 2019-03-18 2020-03-17 Cirrus Logic, Inc. Compensation of own voice occlusion

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE720115A (de) * 1968-08-29 1969-02-03
US3890474A (en) * 1972-05-17 1975-06-17 Raymond C Glicksberg Sound amplitude limiters
US4055233A (en) * 1975-12-22 1977-10-25 Electronic Engineering Co. Of California Ear coupler
US4089332A (en) * 1976-08-09 1978-05-16 Rose Leo J Pneumatic shaping ear plug
NL8001592A (nl) * 1980-03-18 1981-10-16 Philips Nv Mfb systeem met een overnamenetwerk.
US4455675A (en) * 1982-04-28 1984-06-19 Bose Corporation Headphoning
US4622440A (en) * 1984-04-11 1986-11-11 In Tech Systems Corp. Differential hearing aid with programmable frequency response
GB2172769B (en) * 1985-03-21 1988-07-06 Topexpress Ltd Improvements in acoustic attenuation
US4677677A (en) * 1985-09-19 1987-06-30 Nelson Industries Inc. Active sound attenuation system with on-line adaptive feedback cancellation
US4783818A (en) * 1985-10-17 1988-11-08 Intellitech Inc. Method of and means for adaptively filtering screeching noise caused by acoustic feedback
US4677676A (en) * 1986-02-11 1987-06-30 Nelson Industries, Inc. Active attenuation system with on-line modeling of speaker, error path and feedback pack
FR2595498B1 (fr) * 1986-03-07 1989-06-02 Centre Nat Rech Scient METHODS AND DEVICES FOR MITIGATING EXTERNAL NOISE ARISING AT TYMPAN AND IMPROVING THE INTELLIGIBILITY OF ELECTROACOUSTIC COMMUNICATIONS
FR2604551B1 (fr) * 1986-09-26 1988-12-30 Saint Louis Inst Dispositif de protection a l'egard du bruit
EP0280907B1 (de) * 1987-02-17 1991-10-09 Siemens Audiologische Technik GmbH Schaltungsanordnung zum Unterdrücken von Schwingungen

Also Published As

Publication number Publication date
US4985925A (en) 1991-01-15
JPH03505639A (de) 1991-12-05
EP0423172A1 (de) 1991-04-24
JP2989843B2 (ja) 1999-12-13
WO1989012432A1 (en) 1989-12-28
EP0423172A4 (en) 1991-09-11
DE68927707T2 (de) 1997-05-07
EP0423172B1 (de) 1997-01-22
DE68927707D1 (de) 1997-03-06

Similar Documents

Publication Publication Date Title
AR240027A1 (es) Aparato para rociar adhesivo en masa fundida caliente, accesorio de cabeza de rociado utilizable con el mismo, y metodo para rociar dicho adhesivo.
AT114362T (de) LIGHTBOARDS AND MANUFACTURING METHOD.
AT147961T (de) ACTIVE NOISE REDUCTION SYSTEM
AT107004T (de) DOUBLE-WALLED FLUID FEEDING SYSTEM.
AT124586T (de) OPTOELECTRONIC COLOR IMAGE CONVERTER.
AR240857A1 (es) Caja portadora para artefacto de mano
AT120912T (de) RADIO PHONE.
AR240243A1 (es) Una composicion oral anticalculo
AR240014A1 (es) Composicon oral inhibidora de placas dentales.
AT119554T (de) POLYOL COMPOSITION, FOAMS MADE THEREOF, AND PROCESS FOR THEIR PRODUCTION, BASED ON POLYISOCYANATE.
AT107626T (de) RIGID FOAMS OBTAINED FROM TREATED TOLUOLDIISOCYANATE RESIDUES.
AT126933T (de) POWER SUPPLY.
AR240348A1 (es) Un dispositivo de guia para una herramienta de excavacion de zanjas.
AR240507A1 (es) Una correa alargable que ocmprende un cuerpo anular elastomerico y una pluralidad de elementos de forma longitudinal resistentes a la traccion encerrados en el lcuerpo anular a lo largo de una superficie segunla posicon del eje neutro, la correa esta ple
AR240489A1 (es) Disposicion para texturizar uno o mas hilados.
AT105653T (de) CERAMIC SEALING ARRANGEMENT.
AR240340A1 (es) Proceso electrolitico para la produccion de dioxido de cloro.
AT101206T (de) METHOD FOR ELECTROCHEMICALLY IODING AROMATIC COMPOUNDS.
AT102543T (de) REINFORCEMENT MATERIAL FOR DUROPLASTE.
AT122820T (de) INJECTION MOLDED COVER.
AT105001T (de) ACTIVATOR SYSTEM FOR VOLCANIZING RUBBER BLENDS.
DE8813043U1 (de)
AT120943T (de) ELECTRODE FOR USE ON LIVING TISSUE.
DE8809259U1 (de)
AT101469T (de) DEVICE FOR ELIMINATING ELECTROSTATIC CHARGES.

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties