SE0003350D0 - Silencer - Google Patents

Silencer

Info

Publication number
SE0003350D0
SE0003350D0 SE0003350A SE0003350A SE0003350D0 SE 0003350 D0 SE0003350 D0 SE 0003350D0 SE 0003350 A SE0003350 A SE 0003350A SE 0003350 A SE0003350 A SE 0003350A SE 0003350 D0 SE0003350 D0 SE 0003350D0
Authority
SE
Sweden
Prior art keywords
attenuation
sound
active
reactive
resistive
Prior art date
Application number
SE0003350A
Other languages
Swedish (sv)
Original Assignee
Flaekt Ab
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 Flaekt Ab filed Critical Flaekt Ab
Priority to SE0003350A priority Critical patent/SE0003350D0/en
Publication of SE0003350D0 publication Critical patent/SE0003350D0/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/242Sound-absorbing material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/247Active noise-suppression
    • 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
    • G10K2210/104Aircos
    • 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
    • G10K2210/112Ducts
    • 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
    • G10K2210/3224Passive absorbers
    • 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
    • G10K2210/50Miscellaneous
    • G10K2210/509Hybrid, i.e. combining different technologies, e.g. passive and active

Abstract

A ventilating system for transport of air in environments with requirements concerning sound comprising a plurality of channel sections and a sound-attenuating device comprising both active and passive sound attenuation. The passive sound attenuation comprises a reactive part and a resistive part, and the active, the reactive and the resistive attenuation are adapted to attend to attenuation within separate frequency ranges.
SE0003350A 2000-09-18 2000-09-18 Silencer SE0003350D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0003350A SE0003350D0 (en) 2000-09-18 2000-09-18 Silencer

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0003350A SE0003350D0 (en) 2000-09-18 2000-09-18 Silencer
EP01967895A EP1319109A1 (en) 2000-09-18 2001-09-17 Sound attenuator
AU8817801A AU8817801A (en) 2000-09-18 2001-09-17 Sound attenuator
PCT/SE2001/001983 WO2002027118A1 (en) 2000-09-18 2001-09-17 Sound attenuator

Publications (1)

Publication Number Publication Date
SE0003350D0 true SE0003350D0 (en) 2000-09-18

Family

ID=20281085

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0003350A SE0003350D0 (en) 2000-09-18 2000-09-18 Silencer

Country Status (4)

Country Link
EP (1) EP1319109A1 (en)
AU (1) AU8817801A (en)
SE (1) SE0003350D0 (en)
WO (1) WO2002027118A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218301B (en) * 1988-04-29 1992-06-03 Gen Electric Co Plc Active noise control
US5283398A (en) * 1989-12-26 1994-02-01 Tsuchiya Mfg. Co., Ltd. Resonator type silencer
US5315661A (en) * 1992-08-12 1994-05-24 Noise Cancellation Technologies, Inc. Active high transmission loss panel
DE4228356C2 (en) * 1992-08-26 1995-10-19 Daimler Benz Aerospace Ag Cavity resonator for noise reduction
AU1907995A (en) * 1993-12-30 1995-08-01 Bolt Beranek And Newman Inc. Active muffler
JP3510427B2 (en) * 1996-08-15 2004-03-29 ユナイテッド テクノロジーズ コーポレイション Active sound-absorbing wall
AUPP712998A0 (en) * 1998-11-16 1998-12-10 Field, Christopher David Noise attenuation device

Also Published As

Publication number Publication date
WO2002027118A1 (en) 2002-04-04
EP1319109A1 (en) 2003-06-18
AU8817801A (en) 2002-04-08

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