EP0473095A3 - Hybrid sound attenuator - Google Patents

Hybrid sound attenuator Download PDF

Info

Publication number
EP0473095A3
EP0473095A3 EP19910114279 EP91114279A EP0473095A3 EP 0473095 A3 EP0473095 A3 EP 0473095A3 EP 19910114279 EP19910114279 EP 19910114279 EP 91114279 A EP91114279 A EP 91114279A EP 0473095 A3 EP0473095 A3 EP 0473095A3
Authority
EP
European Patent Office
Prior art keywords
sound attenuator
hybrid sound
hybrid
attenuator
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Withdrawn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
EP19910114279
Other languages
German (de)
English (en)
Other versions
EP0473095A2 (de
Inventor
Fridolin Peter Prof. Dr. Mechel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0473095A2 publication Critical patent/EP0473095A2/de
Publication of EP0473095A3 publication Critical patent/EP0473095A3/de
Withdrawn legal-status Critical Current

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
    • G10K11/1785—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
    • 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
    • G10K2210/509—Hybrid, i.e. combining different technologies, e.g. passive and active

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP19910114279 1990-08-30 1991-08-26 Hybrid sound attenuator Withdrawn EP0473095A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027511 1990-08-30
DE4027511A DE4027511C1 (enrdf_load_stackoverflow) 1990-08-30 1990-08-30

Publications (2)

Publication Number Publication Date
EP0473095A2 EP0473095A2 (de) 1992-03-04
EP0473095A3 true EP0473095A3 (en) 1993-02-24

Family

ID=6413270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910114279 Withdrawn EP0473095A3 (en) 1990-08-30 1991-08-26 Hybrid sound attenuator

Country Status (2)

Country Link
EP (1) EP0473095A3 (enrdf_load_stackoverflow)
DE (1) DE4027511C1 (enrdf_load_stackoverflow)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685657A5 (de) * 1992-03-24 1995-08-31 Maximilian Hobelsberger Vorrichtung zur aktiven Simulation einer akustischen Impedanz.
US5812686A (en) * 1992-03-24 1998-09-22 Hobelsberger; Maximilian Hans Device for active simultation of an acoustical impedance
DE4226885C2 (de) * 1992-08-13 2001-04-19 Bayerische Motoren Werke Ag Schallabsorptionsverfahren für Kraftfahrzeuge
DE4342133A1 (de) * 1993-12-10 1995-06-14 Nokia Deutschland Gmbh Anordnung zur aktiven Schalldämpfung
DE4421803C2 (de) * 1994-06-22 1997-11-20 Stn Atlas Elektronik Gmbh Vorrichtung zur aktiven Schalldämpfung
US5498127A (en) * 1994-11-14 1996-03-12 General Electric Company Active acoustic liner
ATE203849T1 (de) * 1996-05-14 2001-08-15 Fraunhofer Ges Forschung Reaktiver schalldämpfer
DE19746645C1 (de) * 1997-10-22 1999-05-20 Fraunhofer Ges Forschung Adaptiver akustischer Monitor
DE19750102A1 (de) 1997-11-12 1999-06-02 Stankiewicz Gmbh Gasdurchströmte Leitung mit Schallabsorptionswirkung
DE19861018C2 (de) 1998-12-15 2001-06-13 Fraunhofer Ges Forschung Gesteuerter akustischer Wellenleiter zur Schalldämpfung
DE19910169B4 (de) * 1999-02-24 2004-01-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zur aktiven Geräuschminderung in Strömungskanälen von Turbomaschinen
DE10118187C2 (de) * 2001-04-11 2003-03-27 Siemens Ag Einrichtung zum Gestalten der Akustik eines Raumes
DE10338786B4 (de) * 2003-07-18 2006-03-09 Weiss Klimatechnik Gmbh Zuluftdecke
DE102007000568A1 (de) 2007-10-24 2009-04-30 Silencesolutions Gmbh Schallabsorber
DE102008015929A1 (de) * 2008-03-27 2009-10-01 J. Eberspächer GmbH & Co. KG Abgasanlage
EP2314783A1 (de) 2009-10-21 2011-04-27 Thorsten Flörsheimer Raumschallabsorber
GB2532796A (en) * 2014-11-28 2016-06-01 Relec Sa Low frequency active acoustic absorber by acoustic velocity control through porous resistive layers
DE102019101358A1 (de) 2019-01-21 2020-07-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Luftfahrzeug
PL442352A1 (pl) * 2022-09-24 2024-03-25 Kfb Acoustics Spółka Z Ograniczoną Odpowiedzialnością Tłumik pasywno-aktywny do redukcji hałasu w kanałach
CN116612734B (zh) * 2022-12-19 2025-07-15 同济大学 一种消声器的构建方法和超构消声器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712534A1 (de) * 1977-03-22 1978-09-28 Sound Attenuators Ltd Verfahren und vorrichtung zur aktiven schalldaempfung
EP0227372A2 (en) * 1985-12-18 1987-07-01 Nelson Industries, Inc. Hybrid active silencer
GB2204916A (en) * 1987-05-19 1988-11-23 British Gas Plc Gaseous flow silencer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425450A1 (de) * 1983-09-22 1985-04-04 Rox Lufttechnische Gerätebau GmbH, 5000 Köln Geraeteschalldaempfer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712534A1 (de) * 1977-03-22 1978-09-28 Sound Attenuators Ltd Verfahren und vorrichtung zur aktiven schalldaempfung
EP0227372A2 (en) * 1985-12-18 1987-07-01 Nelson Industries, Inc. Hybrid active silencer
GB2204916A (en) * 1987-05-19 1988-11-23 British Gas Plc Gaseous flow silencer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J. ACOUST. SOC. AM. Bd. 86, Nr. 2, August 1989, Seiten 832 - 834 M.L. MUNJAL ET AL. 'Analysis of a hybrid noise control system for a duct' *

Also Published As

Publication number Publication date
EP0473095A2 (de) 1992-03-04
DE4027511C1 (enrdf_load_stackoverflow) 1991-10-02

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