DE19945653A1 - Soundproofing system for exhaust systems of motor vehicles - Google Patents

Soundproofing system for exhaust systems of motor vehicles

Info

Publication number
DE19945653A1
DE19945653A1 DE19945653A DE19945653A DE19945653A1 DE 19945653 A1 DE19945653 A1 DE 19945653A1 DE 19945653 A DE19945653 A DE 19945653A DE 19945653 A DE19945653 A DE 19945653A DE 19945653 A1 DE19945653 A1 DE 19945653A1
Authority
DE
Germany
Prior art keywords
sound
devices
signal
computer
motor vehicles
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Withdrawn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
DE19945653A
Other languages
German (de)
Inventor
Vincent Fortoul
Christian Charles Garabedian
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Original Assignee
ECIA Equipements et Composants pour lIndustrie Automobile SA
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 ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical ECIA Equipements et Composants pour lIndustrie Automobile SA
Publication of DE19945653A1 publication Critical patent/DE19945653A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
    • 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
    • G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—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 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
    • 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
    • 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
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/51—Improving tonal quality, e.g. mimicking sports cars

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Dieses Schalldämpfungssystem für Auspuffanlagen von Kraftfahrzeugen der Art, die Vorrichtungen (2) zum Messen des Restgeräusches der Auspuffanlage umfaßt, die mit einem Schalldämpfungsrechner (3) zur Erzeugung eines Schalldämpfungssignals zur Steuerung von zu der Anlage (1) gehörenden elektroakustischen Wandlervorrichtungen (6) zur Herstellung einer Schalldämpfung der Anlage verbunden sind, ist dadurch gekennzeichnet, daß der Rechner (3) ferner Vorrichtungen (5) zur Erzeugung eines Syntheseschallsignals umfaßt, das geeignet ist, das Schalldämpfungssignal (bei 6) zu überlagern.This sound damping system for exhaust systems of motor vehicles of the type which comprises devices (2) for measuring the residual noise of the exhaust system, which with a sound damping computer (3) for generating a sound damping signal for controlling electro-acoustic transducer devices (6) belonging to the system (1) for the production Sound insulation of the system is characterized in that the computer (3) further comprises devices (5) for generating a synthesis sound signal which is suitable for superimposing the sound damping signal (at 6).

Description

Die vorliegende Erfindung betrifft ein Schalldämpfungssystem für Aus­ puffanlagen von Kraftfahrzeugen.The present invention relates to a sound attenuation system for off automobile puff systems.

Im Stand der Technik sind bereits Schalldämpfungssysteme für Aus­ puffanlagen bekannt, die Vorrichtungen zur Erfassung des Restgeräuschs der Anlage aufweisen, die mit einem Schalldämpfungsrechner verbunden sind, der ein Schalldämpfungssignal zur Steuerung von Lautsprechervorrichtungen erzeugt, die Teil der Anlage sind und für eine Schalldämpfung der Anlage sorgen.In the prior art, silencing systems are already off Puff systems known, the devices for detecting the residual noise Have system that are connected to a sound attenuation computer, which is a sound attenuation signal for controlling loudspeaker devices generated, which are part of the system and for sound insulation of the system to care.

Solche Systeme wurden im Stand der Technik zur Verringerung des Lärmpegels entwickelt, der beim Betrieb von Kraftfahrzeugen entsteht.Such systems have been used in the prior art to reduce the Noise level developed, which arises during the operation of motor vehicles.

Ziel eines solches Systems ist es nämlich, das Restgeräusch der Anla­ ge zu analysieren, um eine Schalldämpfung herzustellen, dank derer dieses Restgeräusch weitestmöglich reduziert wird.The aim of such a system is namely the residual noise of the system to analyze to create a sound attenuation, thanks to which this Residual noise is reduced as much as possible.

Ziel der Erfindung ist es, dieses System zu perfektionieren, um dessen Zweckmäßigkeit zu vergrößern.The aim of the invention is to perfect this system in order to Expediency to enlarge.

Hierzu hat die Erfindung ein Schalldämpfungssystem für Auspuffanla­ gen von Kraftfahrzeugen der Art zum Gegenstand, das Vorrichtungen zur Er­ fassung des Restgeräuschs der Anlage aufweist, die mit einem Schalldämp­ fungsrechner verbunden sind, der ein Schalldämpfungssignal zur Steuerung von elektroakustischen Wandlervorrichtungen erzeugt, die Teil der Anlage sind und für eine Schalldämpfung der Anlage sorgen, das dadurch gekenn­ zeichnet ist, daß es ferner Vorrichtungen zur Erzeugung eines Synthese-Schall­ dämpfungssignals umfaßt, das geeignet ist, das Schalldämpfungssignal zu überlagern.To this end, the invention has a sound attenuation system for exhaust systems to the subject of motor vehicles of the type which devices for the Er Version of the residual noise of the system, which with a silencer  tion computer are connected, the sound attenuation signal for control generated by electroacoustic transducer devices that are part of the system are and provide sound insulation of the system, which is known is that it also has devices for generating a synthesis sound damping signal comprises, which is suitable, the sound damping signal to overlay.

Die Erfindung wird besser verständlich anhand der nachfolgenden Be­ schreibung, die nur beispielhaft gegeben ist und sich auf die beiliegende Zeichnung bezieht, die eine graphische Darstellung zeigt, die den allgemeinen Aufbau eines Schalldämpfungssystems nach der Erfindung illustriert.The invention will be better understood from the following Be spelling, which is given only as an example and refers to the enclosed Drawing refers to a graphical representation showing the general Structure of a sound absorption system according to the invention illustrated.

In dieser Figur erkennt man nämlich ein Schalldämpfungssystem für die Auspuffanlage eines Kraftfahrzeugs, das allgemein mit der Bezugsziffer 1 bezeichnet ist.In this figure you can see a noise reduction system for the exhaust system of a motor vehicle, which is generally designated by the reference number 1 .

Dieses System umfaßt in herkömmlicher Weise Vorrichtungen zum Erfassen des Auspuffrestgeräuschs, die allgemein mit der Bezugsziffer 2 be­ zeichnet sind und beispielsweise aus einem beliebigen geeigneten Mikrofon bestehen.This system conventionally includes devices for detecting the exhaust residual noise, which are generally designated by the reference numeral 2 be and for example consist of any suitable microphone.

Diese Vorrichtungen 2 sind mit einem Schalldämpfungsrechner ver­ bunden, der allgemein mit der Bezugsziffer 3 bezeichnet ist und ein Schall­ dämpfungssignal zum Steuern von elektroakustischen Wandlervorrichtungen wie beispielsweise einem zur Anlage gehörigen Lautsprecher erzeugt, wobei diese Vorrichtungen allgemein die Bezugsziffer 4 tragen und eine Schall­ dämpfung der Anlage ermöglichen.These devices 2 are connected to a sound attenuation computer, which is generally designated by the reference number 3 and generates a sound damping signal for controlling electroacoustic transducer devices such as, for example, a loudspeaker belonging to the system, these devices generally bearing the reference number 4 and a sound attenuation of the system enable.

Ein solcher Aufbau ist herkömmlich und wird daher im folgenden nicht näher beschrieben.Such a structure is conventional and therefore will not be discussed below described in more detail.

Nach der Erfindung umfaßt der Rechner 3 ferner Vorrichtungen 5 zur Erzeugung eines Syntheseschallsignals, das geeignet ist, beispielsweise bei 6 das Schalldämpfungssignal zu überlagern, das vorgesehen ist, die Wandler­ vorrichtungen 4 zu steuern.According to the invention, the computer 3 further comprises devices 5 for generating a synthesis sound signal which is suitable, for example at 6, to superimpose the sound attenuation signal which is provided to control the converter devices 4 .

Es können auch Vorrichtungen zur Modifizierung dieses von dem Schalldämpfungsrechner erzeugten Synthesegeräuschs mit diesem verbun­ den werden, wobei diese Vorrichtungen allgemein mit der Bezugsziffer 7 be­ zeichnet sind und beispielsweise von einem Benutzer gesteuert werden kön­ nen.Devices for modifying this synthesis noise generated by the sound attenuation computer can also be connected to this, these devices being generally designated by the reference numeral 7 and being able to be controlled, for example, by a user.

Mit einem solchen System ist es also dank der Schalldämpfungsfunkti­ on nicht nur möglich, unerwünschte Betriebsgeräusche der Auspuffanlage zu beseitigen, sondern ebenfalls, die Wandlervorrichtungen mittels eines Syn­ theseschallsignals zu steuern, das für das Ohr angenehmer ist.With such a system, it is thanks to the sound damping function not only possible to undesirable operating noise of the exhaust system  eliminate, but also, the converter devices by means of a syn to control the sound signal that is more comfortable for the ear.

Natürlich sind unterschiedliche Ausführungsformen eines solchen Sy­ stems denkbar.Of course, there are different embodiments of such a system conceivable.

Claims (2)

1. Schalldämpfungssystem für Auspuffanlagen von Kraftfahrzeugen der Art, die Vorrichtungen (2) zur Erfassung des Restgeräuschs der Anlage aufweist, die mit einem Schalldämpfungsrechner (3) verbunden sind, der ein Schalldämpfungssignal zur Steuerung von zu der Anlage (1) gehörenden elektroakustischen Wandlervorrichtungen (4) zur Herstel­ lung einer Schalldämpfung der Anlage erzeugt, dadurch gekennzeich­ net, daß der Rechner (3) ferner Vorrichtungen (5) zum Erzeugen eines Syntheseschallsignals aufweist, das geeignet ist, das Schalldämp­ fungssignal (bei 6) zu überlagern.1. A silencing system for exhaust systems of motor vehicles of the type which has devices ( 2 ) for detecting the residual noise of the system, which are connected to a silencing computer ( 3 ) which transmits a silencing signal for controlling electro-acoustic transducer devices ( 4 ) belonging to the system ( 1 ) ) for the produc- tion of soundproofing the system, characterized in that the computer ( 3 ) also has devices ( 5 ) for generating a synthesis sound signal which is suitable for superimposing the sound damping signal (at 6 ). 2. System nach Anspruch 1, dadurch gekennzeichnet, daß es Vorrichtun­ gen (5) zur Modifizierung des von dem Schalldämpfungsrechner (3) er­ zeugten Syntheseschallsignals umfaßt.2. System according to claim 1, characterized in that it includes Vorrichtun gene ( 5 ) for modifying the of the sound attenuation computer ( 3 ) he generated synthesis sound signal.
DE19945653A 1998-09-23 1999-09-23 Soundproofing system for exhaust systems of motor vehicles Withdrawn DE19945653A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9811877A FR2783562B1 (en) 1998-09-23 1998-09-23 ANTI-NOISE SYSTEM FOR VEHICLE EXHAUST LINE

Publications (1)

Publication Number Publication Date
DE19945653A1 true DE19945653A1 (en) 2000-04-20

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ID=9530748

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19945653A Withdrawn DE19945653A1 (en) 1998-09-23 1999-09-23 Soundproofing system for exhaust systems of motor vehicles

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Country Link
DE (1) DE19945653A1 (en)
FR (1) FR2783562B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7059820B2 (en) 2002-07-19 2006-06-13 Honeywell International, Inc. Noise control
DE102005011747B3 (en) * 2005-03-11 2006-06-29 Benteler Automobiltechnik Gmbh Active exhaust gas silencer for motor vehicle has membrane set in flexural oscillations by excitation by converter so that on surface facing exhaust gas flow structure-borne noise tuned to exhaust gas noise is created

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805733A (en) * 1987-07-07 1989-02-21 Nippondenso Co., Ltd. Active silencer
GB8908980D0 (en) * 1989-04-20 1989-06-07 Lotus Group Plc Treatment of noise in vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7059820B2 (en) 2002-07-19 2006-06-13 Honeywell International, Inc. Noise control
DE102005011747B3 (en) * 2005-03-11 2006-06-29 Benteler Automobiltechnik Gmbh Active exhaust gas silencer for motor vehicle has membrane set in flexural oscillations by excitation by converter so that on surface facing exhaust gas flow structure-borne noise tuned to exhaust gas noise is created

Also Published As

Publication number Publication date
FR2783562A1 (en) 2000-03-24
FR2783562B1 (en) 2000-12-15

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20120403