SE8800867L - Ljudreflektor - Google Patents
LjudreflektorInfo
- Publication number
- SE8800867L SE8800867L SE8800867A SE8800867A SE8800867L SE 8800867 L SE8800867 L SE 8800867L SE 8800867 A SE8800867 A SE 8800867A SE 8800867 A SE8800867 A SE 8800867A SE 8800867 L SE8800867 L SE 8800867L
- Authority
- SE
- Sweden
- Prior art keywords
- cavity
- low frequency
- infrasound
- sound
- frequency sound
- Prior art date
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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
- F23M20/005—Noise absorbing means
-
- 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
- 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)
- Exhaust Silencers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8800867A SE8800867L (sv) | 1988-03-10 | 1988-03-10 | Ljudreflektor |
PCT/SE1989/000122 WO1989008909A1 (en) | 1988-03-10 | 1989-03-10 | Sound reflector |
AU32921/89A AU3292189A (en) | 1988-03-10 | 1989-03-10 | Sound reflector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8800867A SE8800867L (sv) | 1988-03-10 | 1988-03-10 | Ljudreflektor |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8800867D0 SE8800867D0 (sv) | 1988-03-10 |
SE8800867L true SE8800867L (sv) | 1989-09-11 |
Family
ID=20371648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8800867A SE8800867L (sv) | 1988-03-10 | 1988-03-10 | Ljudreflektor |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3292189A (sv) |
SE (1) | SE8800867L (sv) |
WO (1) | WO1989008909A1 (sv) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8902831A (nl) * | 1989-11-16 | 1991-06-17 | Philips Nv | Luidsprekersysteem bevattende een helmholtz resonator gekoppeld met een akoestische buis. |
EP1213538B1 (de) * | 2000-12-08 | 2006-09-06 | Alstom Technology Ltd | Abgassystem mit Helmholtz-Resonator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE110315C1 (sv) * | ||||
DE1147769B (de) * | 1959-04-10 | 1963-04-25 | Sulzer Ag | Resonator |
US3434565A (en) * | 1967-12-21 | 1969-03-25 | Walker Mfg Co | Silencer with angled tuning tube leading to helmholtz resonator |
US3525419A (en) * | 1968-02-07 | 1970-08-25 | Cassel Thomas Richard | Exhaust system |
US4281741A (en) * | 1979-10-01 | 1981-08-04 | General Motors Corporation | Compact exhaust silencer for diesel locomotives |
DE3517859A1 (de) * | 1985-05-17 | 1986-11-20 | Wolf Klimatechnik GmbH, 8302 Mainburg | Heizungskessel |
-
1988
- 1988-03-10 SE SE8800867A patent/SE8800867L/sv unknown
-
1989
- 1989-03-10 WO PCT/SE1989/000122 patent/WO1989008909A1/en unknown
- 1989-03-10 AU AU32921/89A patent/AU3292189A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU3292189A (en) | 1989-10-05 |
WO1989008909A1 (en) | 1989-09-21 |
SE8800867D0 (sv) | 1988-03-10 |
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