BE521581A - - Google Patents
Info
- Publication number
- BE521581A BE521581A BE521581DA BE521581A BE 521581 A BE521581 A BE 521581A BE 521581D A BE521581D A BE 521581DA BE 521581 A BE521581 A BE 521581A
- Authority
- BE
- Belgium
- Prior art keywords
- frequencies
- sound
- range
- devices
- air
- Prior art date
Links
- 238000012360 testing method Methods 0.000 claims description 19
- 230000002238 attenuated effect Effects 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims 7
- 238000000576 coating method Methods 0.000 claims 7
- 238000009434 installation Methods 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE521581A true BE521581A (OSRAM) |
Family
ID=157124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE521581D BE521581A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE521581A (OSRAM) |
-
0
- BE BE521581D patent/BE521581A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6625118B2 (ja) | 音響デバイス | |
| FR2482663A1 (fr) | Revetement d'isolation acoustique a couches multiples | |
| WO2020128103A1 (fr) | Panneau acoustiquement isolant | |
| FR2916016A3 (fr) | Silencieux pour echappement d'air comprime destine a des applications pneumatiques | |
| EP0177996B1 (fr) | Appareillage amortisseur du bruit pour les gaz d'échappement des moteurs à combustion interne | |
| FR2970009A1 (fr) | Ensemble acoustiquement absorbant | |
| BE521581A (OSRAM) | ||
| FR2698315A1 (fr) | Elément à structure en nid d'abeille courbe. | |
| EP0127550B1 (fr) | Silencieux pour installation d'air comprimé | |
| US7350620B2 (en) | Compact silencer | |
| BE521579A (OSRAM) | ||
| EP0072274B1 (fr) | Silencieux ou atténuateur de son réactif pour débit pulse de gaz | |
| US4236598A (en) | Rotating self-cleaning sound absorber for ducts | |
| CH618499A5 (OSRAM) | ||
| FR2914479A1 (fr) | Materiau poreux pour paroi de traitement acoustique. dispositif reducteur de bruit utilisant ce materiau. | |
| FR2780348A1 (fr) | Conduite d'air dans une installation de ventilation chauffage et/ou climatisation, notamment de vehicule automobile | |
| EP1659283B1 (fr) | Conduit pour le transport de fluide gazeux et dispositif d'admission d'air comportant un tel conduit | |
| FR2544358A1 (fr) | Dispositif absorbeur acoustique passif pour passage d'air, absorbant aussi les basses frequences | |
| WO1996024774A1 (fr) | Procede de conditionnement d'un ecoulement d'un fluide et conditionneur d'ecoulement du fluide | |
| FR2949595A1 (fr) | Dispositif d'attenuation acoustique | |
| US20240379086A1 (en) | Acoustic absorbing strucutres | |
| EP1712382B1 (fr) | Dispositif de ventilation d'un véhicule automobile comportant des moyens d'atténuation de bruit | |
| WO1995032385A1 (en) | Free rotor muffler | |
| WO2025202076A1 (fr) | Dispositif d'atténuation acoustique | |
| Ishihara | On the Generation Mechanism of High Level Sound Generated in a Boiler and Heat Exchanger (Effect of the Number of Tubes and Acoustic Damping on SPL) |