EP0805431A3 - Verfahren und Vorrichtung zur aktiven Schallreduzierung von Gasstromen - Google Patents

Verfahren und Vorrichtung zur aktiven Schallreduzierung von Gasstromen Download PDF

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Publication number
EP0805431A3
EP0805431A3 EP97102834A EP97102834A EP0805431A3 EP 0805431 A3 EP0805431 A3 EP 0805431A3 EP 97102834 A EP97102834 A EP 97102834A EP 97102834 A EP97102834 A EP 97102834A EP 0805431 A3 EP0805431 A3 EP 0805431A3
Authority
EP
European Patent Office
Prior art keywords
active noise
gas flows
noise control
changed
noise reduction
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.)
Granted
Application number
EP97102834A
Other languages
English (en)
French (fr)
Other versions
EP0805431B1 (de
EP0805431A2 (de
Inventor
Ingo Dr. Borchers
Ludwig Dipl.-Ing. Schauwecker
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.)
Dornier GmbH
Original Assignee
Dornier GmbH
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 Dornier GmbH filed Critical Dornier GmbH
Publication of EP0805431A2 publication Critical patent/EP0805431A2/de
Publication of EP0805431A3 publication Critical patent/EP0805431A3/de
Application granted granted Critical
Publication of EP0805431B1 publication Critical patent/EP0805431B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10K11/17857—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
    • G10K11/1787—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
    • G10K11/17875—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
    • G10K2210/101—One dimensional
    • 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
    • G10K2210/10—Applications
    • G10K2210/128—Vehicles
    • G10K2210/1282—Automobiles
    • 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
    • G10K2210/128—Vehicles
    • G10K2210/1282—Automobiles
    • G10K2210/12822—Exhaust pipes or mufflers
    • 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
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • 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
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • G10K2210/32121—Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur aktiven Schallreduzierung, wobei ein erster (10) und ein zweiter Volumenstrom (20) vorhanden sind, von denen einer (20) derart verändert wird, daß bei der nachfolgenden Interferenz der beiden Volumenströme (10,20) die Schallreduzierung bewirkt wird. Erfindungsgemäß wird die Veränderung des einen Volumenstroms (20) durch Modulation mit einem vorgegebenen Frequenzspektrum durchgeführt.
EP97102834A 1996-05-02 1997-02-21 Verfahren und Vorrichtung zur aktiven Schallreduzierung von Gasstromen Expired - Lifetime EP0805431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19617465A DE19617465C2 (de) 1996-05-02 1996-05-02 Verfahren und Vorrichtung zur aktiven Schallreduzierung
DE19617465 1996-05-02

Publications (3)

Publication Number Publication Date
EP0805431A2 EP0805431A2 (de) 1997-11-05
EP0805431A3 true EP0805431A3 (de) 1999-10-20
EP0805431B1 EP0805431B1 (de) 2002-04-24

Family

ID=7793005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102834A Expired - Lifetime EP0805431B1 (de) 1996-05-02 1997-02-21 Verfahren und Vorrichtung zur aktiven Schallreduzierung von Gasstromen

Country Status (4)

Country Link
EP (1) EP0805431B1 (de)
JP (1) JPH112113A (de)
DE (2) DE19617465C2 (de)
ES (1) ES2175205T3 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2293076C (en) * 1999-12-22 2010-03-30 Man-Chun Tse Fan and compressor noise attenuation
DE10049884C1 (de) * 2000-10-10 2002-04-04 Horst Schmitt Druckluft als Schallschutzvorrichtung
US9881602B2 (en) 2014-07-11 2018-01-30 Tenneco Gmbh Sound system for a motor vehicle
DE102017203181B4 (de) 2017-02-28 2021-08-26 Audi Ag Klangerzeugungsvorrichtung zur Erzeugung von Abgasanlagensound sowie ein zugehöriges Kraftfahrzeug
DE102017203182B4 (de) 2017-02-28 2021-09-02 Audi Ag Klangerzeugungsvorrichtung zur Erzeugung von Abgasanlagensound sowie ein zugehöriges Kraftfahrzeug
DE202017007444U1 (de) 2017-11-03 2021-08-10 Cisma Solutions Aps Auspuffblende mit Schallquelle
DE102017219573B4 (de) * 2017-11-03 2021-11-11 Cisma Solutions Aps Auspuffblende mit Schallquelle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136504A (ja) * 1988-11-16 1990-05-25 Aisin Seiki Co Ltd 内燃エンジンの消音装置
WO1991009214A1 (en) * 1989-12-12 1991-06-27 Group Lotus Plc Attenuation of dynamic pressure fluctuations in ducts
DE4341951A1 (de) * 1992-12-17 1994-06-23 Volkswagen Ag Interferenz-Geräuschdämpfer
US5325438A (en) * 1993-02-01 1994-06-28 At&T Bell Laboratories Active noise-cancellation system for automotive mufflers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136504A (ja) * 1988-11-16 1990-05-25 Aisin Seiki Co Ltd 内燃エンジンの消音装置
WO1991009214A1 (en) * 1989-12-12 1991-06-27 Group Lotus Plc Attenuation of dynamic pressure fluctuations in ducts
DE4341951A1 (de) * 1992-12-17 1994-06-23 Volkswagen Ag Interferenz-Geräuschdämpfer
US5325438A (en) * 1993-02-01 1994-06-28 At&T Bell Laboratories Active noise-cancellation system for automotive mufflers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 375 (M - 1010) 14 August 1990 (1990-08-14) *

Also Published As

Publication number Publication date
DE59707085D1 (de) 2002-05-29
EP0805431B1 (de) 2002-04-24
DE19617465A1 (de) 1997-11-13
DE19617465C2 (de) 1999-05-20
JPH112113A (ja) 1999-01-06
ES2175205T3 (es) 2002-11-16
EP0805431A2 (de) 1997-11-05

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