FR2783869B1 - Systeme anti-bruit de ligne d'echappement de vehicule automobile - Google Patents
Systeme anti-bruit de ligne d'echappement de vehicule automobileInfo
- Publication number
- FR2783869B1 FR2783869B1 FR9811954A FR9811954A FR2783869B1 FR 2783869 B1 FR2783869 B1 FR 2783869B1 FR 9811954 A FR9811954 A FR 9811954A FR 9811954 A FR9811954 A FR 9811954A FR 2783869 B1 FR2783869 B1 FR 2783869B1
- Authority
- FR
- France
- Prior art keywords
- exhaust system
- automotive exhaust
- automotive
- exhaust
- 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.)
- Expired - Fee Related
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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
-
- 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
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
- G10K2210/12822—Exhaust pipes or mufflers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9811954A FR2783869B1 (fr) | 1998-09-24 | 1998-09-24 | Systeme anti-bruit de ligne d'echappement de vehicule automobile |
DE19945644A DE19945644A1 (de) | 1998-09-24 | 1999-09-23 | Schalldämpfungssystem für Auspuffanlagen von Kraftfahrzeugen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9811954A FR2783869B1 (fr) | 1998-09-24 | 1998-09-24 | Systeme anti-bruit de ligne d'echappement de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2783869A1 FR2783869A1 (fr) | 2000-03-31 |
FR2783869B1 true FR2783869B1 (fr) | 2000-12-22 |
Family
ID=9530800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9811954A Expired - Fee Related FR2783869B1 (fr) | 1998-09-24 | 1998-09-24 | Systeme anti-bruit de ligne d'echappement de vehicule automobile |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19945644A1 (fr) |
FR (1) | FR2783869B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10021031A1 (de) * | 2000-05-02 | 2001-11-08 | Mann & Hummel Filter | Leitungssystem mit elektromechanischem Wandler zur Erzeugung eines Korrekturgeräusches |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1512014A (en) * | 1974-06-21 | 1978-05-24 | Univ Leeds Ind Service Ltd | Method of attenuating longitudinal compression waves travelling in a gas filled duct |
US4805733A (en) * | 1987-07-07 | 1989-02-21 | Nippondenso Co., Ltd. | Active silencer |
-
1998
- 1998-09-24 FR FR9811954A patent/FR2783869B1/fr not_active Expired - Fee Related
-
1999
- 1999-09-23 DE DE19945644A patent/DE19945644A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
DE19945644A1 (de) | 2000-05-04 |
FR2783869A1 (fr) | 2000-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20090529 |