MY125833A - Wall cavity microphone turbulence shield - Google Patents

Wall cavity microphone turbulence shield

Info

Publication number
MY125833A
MY125833A MYPI98002303A MYPI9802303A MY125833A MY 125833 A MY125833 A MY 125833A MY PI98002303 A MYPI98002303 A MY PI98002303A MY PI9802303 A MYPI9802303 A MY PI9802303A MY 125833 A MY125833 A MY 125833A
Authority
MY
Malaysia
Prior art keywords
cavity
wall cavity
cavity microphone
duct
turbulence shield
Prior art date
Application number
MYPI98002303A
Inventor
Duane C Mc Cormick
James T Rainey
Mark A Daniels
Shau-Tak R Chou
Original Assignee
Carrier 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
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of MY125833A publication Critical patent/MY125833A/en

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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • 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
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • 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
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • 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
    • 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
    • G10K2210/1082—Microphones, e.g. systems using "virtual" microphones
    • 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
    • G10K2210/109—Compressors, e.g. fans
    • 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
    • G10K2210/112—Ducts
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/507—Flow or turbulence

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)
  • Air Conditioning Control Device (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Exhaust Silencers (AREA)

Abstract

A CAVITY IS PROVIDED EXTERNAL TO A DUCT OR FAN DISCHARGE IN AN ANC SYSTEM SUCH THAT THE DUCT LINER OR POROUS MATERIAL SEPARATES THE INTERIOR OF THE DUCT FROM THE CAVITY. A MICROPHONE IS LOCATED IN THE CAVITY. BAFFLES OF POROUS MATERIAL ARE PREFERABLY LOCATED IN THE CAVITY SO AS TO DIVIDE THE CAVITY INTO A PLURALITY OF CHAMBERS TO REDUCE INTERNAL FLOW RECIRCULATION IN THE CAVITY.
MYPI98002303A 1997-06-06 1998-05-23 Wall cavity microphone turbulence shield MY125833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87102097A 1997-06-06 1997-06-06

Publications (1)

Publication Number Publication Date
MY125833A true MY125833A (en) 2006-08-30

Family

ID=25356543

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI98002303A MY125833A (en) 1997-06-06 1998-05-23 Wall cavity microphone turbulence shield

Country Status (10)

Country Link
EP (1) EP0883104B1 (en)
JP (1) JP2878275B2 (en)
KR (1) KR100344595B1 (en)
CN (1) CN1138084C (en)
AU (1) AU740156B2 (en)
BR (1) BR9801773A (en)
DE (1) DE69837900T2 (en)
ES (1) ES2286842T3 (en)
MY (1) MY125833A (en)
SG (1) SG77636A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2814226T3 (en) * 2009-11-02 2021-03-26 Mitsubishi Electric Corp Fan structure equipped with a noise control system
DE102012212843A1 (en) * 2012-07-23 2014-01-23 Behr Gmbh & Co. Kg air conditioning
FR2996342A1 (en) * 2012-10-02 2014-04-04 Peugeot Citroen Automobiles Sa System for reducing noise of air-conditioner of motor bike, has control unit connected to loudspeaker to send command to reduce air-conditioner noise, and microphone and loudspeaker arranged in same section of air duct of air-conditioner
JP6617286B2 (en) * 2015-09-30 2019-12-11 パナソニックＩｐマネジメント株式会社 Blower
JP6689218B2 (en) 2017-02-02 2020-04-28 株式会社東芝 Electronic device and method
CN111164671B (en) * 2017-10-03 2023-09-01 富士胶片株式会社 Sound-deadening tubular structure
KR20200021813A (en) * 2018-08-21 2020-03-02 한온시스템 주식회사 Air conditioning system for automotive vehicles
KR102644103B1 (en) * 2019-01-29 2024-03-06 한온시스템 주식회사 Air conditioning system for automotive vehicles

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8603678D0 (en) * 1986-02-14 1986-03-19 Gen Electric Co Plc Active noise control
US5457749A (en) * 1990-04-09 1995-10-10 Noise Cancellation Technologies, Inc. Electronic muffler
US5377275A (en) * 1992-07-29 1994-12-27 Kabushiki Kaisha Toshiba Active noise control apparatus
AU1907995A (en) * 1993-12-30 1995-08-01 Bolt Beranek And Newman Inc. Active muffler
DE4421803C2 (en) * 1994-06-22 1997-11-20 Stn Atlas Elektronik Gmbh Device for active sound attenuation
US5606622A (en) * 1994-09-29 1997-02-25 The Boeing Company Active noise control in a duct with highly turbulent airflow
DE19526098C1 (en) * 1995-07-18 1996-09-12 Stn Atlas Elektronik Gmbh Active sound-dampening equipment
FR2740599B1 (en) * 1995-10-30 1997-12-19 Technofirst ACTIVE ACOUSTIC MITIGATION DEVICE INTENDED TO BE ARRANGED WITHIN A DUCT, PARTICULARLY FOR SOUNDPROOFING A VENTILATION AND / OR AIR CONDITIONING NETWORK
US5808243A (en) * 1996-08-30 1998-09-15 Carrier Corporation Multistage turbulence shield for microphones

Also Published As

Publication number Publication date
EP0883104A2 (en) 1998-12-09
JPH10339499A (en) 1998-12-22
JP2878275B2 (en) 1999-04-05
DE69837900D1 (en) 2007-07-26
ES2286842T3 (en) 2007-12-01
AU740156B2 (en) 2001-11-01
EP0883104A3 (en) 2001-09-12
EP0883104B1 (en) 2007-06-13
AU6996098A (en) 1998-12-10
KR19990006719A (en) 1999-01-25
DE69837900T2 (en) 2008-02-14
SG77636A1 (en) 2001-01-16
KR100344595B1 (en) 2002-09-18
CN1202592A (en) 1998-12-23
CN1138084C (en) 2004-02-11
BR9801773A (en) 1999-07-13

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