GB2271494B - Cavity resonator - Google Patents
Cavity resonatorInfo
- Publication number
- GB2271494B GB2271494B GB9317492A GB9317492A GB2271494B GB 2271494 B GB2271494 B GB 2271494B GB 9317492 A GB9317492 A GB 9317492A GB 9317492 A GB9317492 A GB 9317492A GB 2271494 B GB2271494 B GB 2271494B
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity resonator
- resonator
- cavity
- 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
-
- 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
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924228356 DE4228356C2 (en) | 1992-08-26 | 1992-08-26 | Cavity resonator for noise reduction |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9317492D0 GB9317492D0 (en) | 1993-10-06 |
GB2271494A GB2271494A (en) | 1994-04-13 |
GB2271494B true GB2271494B (en) | 1996-02-14 |
Family
ID=6466470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9317492A Expired - Fee Related GB2271494B (en) | 1992-08-26 | 1993-08-23 | Cavity resonator |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4228356C2 (en) |
FR (1) | FR2696268A1 (en) |
GB (1) | GB2271494B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4446080B4 (en) * | 1994-12-22 | 2004-03-18 | Bayerische Motoren Werke Ag | Sound absorption system for motor vehicles |
FR2750527B1 (en) † | 1996-06-28 | 1998-08-21 | Bertin & Cie | NOISE ABSORPTION STRUCTURES AND WALLS MADE OF SUCH STRUCTURES |
DE10002984C1 (en) * | 2000-01-24 | 2001-08-09 | Daimler Chrysler Ag | Acoustic absorber and method for sound absorption |
SE0003350D0 (en) * | 2000-09-18 | 2000-09-18 | Flaekt Ab | Silencer |
DE10232291B4 (en) | 2002-07-16 | 2004-05-27 | Eads Deutschland Gmbh | Device and method for active noise control and engine for aircraft |
GB2392762A (en) | 2002-09-06 | 2004-03-10 | Schlumberger Holdings | Mud pump noise attenuation in a borehole telemetry system |
JP4251027B2 (en) | 2003-07-14 | 2009-04-08 | トヨタ紡織株式会社 | Silencer |
DE10339811B4 (en) * | 2003-08-27 | 2005-09-22 | J. Eberspächer GmbH & Co. KG | Resonator for reducing airborne sound |
DE102004022972A1 (en) * | 2004-05-10 | 2005-12-08 | J. Eberspächer GmbH & Co. KG | Resonator for exhaust-gas system, has control unit adjustable relative to neck such that flow through cross section of resonator is varied and effective length of resonator is varied for adjusting resonance frequency of the resonator |
DE102008030082A1 (en) * | 2008-06-25 | 2009-12-31 | Bomag Gmbh | Construction machine i.e. vibrating roller, has acoustic insulation-hollow space connected with cabin by acoustic insulation opening, where cross section of insulation opening is changeable by adjusting device |
DE102012024162B4 (en) * | 2012-12-04 | 2019-05-29 | Bundesrepublik Deutschland, vertreten durch das Bundesministerium für Wirtschaft und Technologie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt | Helmholtz dampers and method for fitting a Helmholtz damper |
DE102019215650A1 (en) * | 2019-10-11 | 2021-04-15 | Volkswagen Aktiengesellschaft | Cavity resonator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB914272A (en) * | 1960-06-11 | 1963-01-02 | Lucas Industries Ltd | Vehicle direction indicator systems |
EP0119634A2 (en) * | 1983-03-22 | 1984-09-26 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
US4539947A (en) * | 1982-12-09 | 1985-09-10 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1241787A (en) * | 1959-08-07 | 1960-09-23 | Citroen Sa Andre | Variable impedance acoustic resonator |
US3866001A (en) * | 1974-03-04 | 1975-02-11 | Junger Miguel C | Structural block with septum |
DE3300499A1 (en) * | 1983-01-08 | 1984-07-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Sound absorber for passages through which liquids flow |
JPS60182348A (en) * | 1984-02-29 | 1985-09-17 | Hino Motors Ltd | Suction noise reducer for engine |
JPS6235008A (en) * | 1985-08-08 | 1987-02-16 | Agency Of Ind Science & Technol | Temperature control type adaptive noise suppressor |
DE3812224A1 (en) * | 1988-04-13 | 1989-10-26 | Messerschmitt Boelkow Blohm | DEVICE FOR DAMPING AIR AND BODY SOUND VIBRATIONS |
JP2562054B2 (en) * | 1989-05-29 | 1996-12-11 | 本田技研工業株式会社 | Air intake noise reduction device for internal combustion engine |
-
1992
- 1992-08-26 DE DE19924228356 patent/DE4228356C2/en not_active Expired - Fee Related
-
1993
- 1993-08-23 GB GB9317492A patent/GB2271494B/en not_active Expired - Fee Related
- 1993-08-26 FR FR9310269A patent/FR2696268A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB914272A (en) * | 1960-06-11 | 1963-01-02 | Lucas Industries Ltd | Vehicle direction indicator systems |
US4539947A (en) * | 1982-12-09 | 1985-09-10 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
EP0119634A2 (en) * | 1983-03-22 | 1984-09-26 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
Also Published As
Publication number | Publication date |
---|---|
FR2696268A1 (en) | 1994-04-01 |
DE4228356C2 (en) | 1995-10-19 |
GB2271494A (en) | 1994-04-13 |
GB9317492D0 (en) | 1993-10-06 |
DE4228356A1 (en) | 1994-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970823 |