BE486725A - - Google Patents
Info
- Publication number
- BE486725A BE486725A BE486725DA BE486725A BE 486725 A BE486725 A BE 486725A BE 486725D A BE486725D A BE 486725DA BE 486725 A BE486725 A BE 486725A
- Authority
- BE
- Belgium
- Prior art keywords
- less
- sounds
- acoustic
- walls
- cone
- Prior art date
Links
- 239000000463 material Substances 0.000 description 13
- 238000004026 adhesive bonding Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 208000004998 Abdominal Pain Diseases 0.000 description 1
- 101100348852 Aspergillus sp. (strain MF297-2) notD gene Proteins 0.000 description 1
- 208000002881 Colic Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 241000880493 Leptailurus serval Species 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- ILVGMCVCQBJPSH-WDSKDSINSA-N Ser-Val Chemical compound CC(C)[C@@H](C(O)=O)NC(=O)[C@@H](N)CO ILVGMCVCQBJPSH-WDSKDSINSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
-
- 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
- G10K11/20—Reflecting arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE486725A true BE486725A (enrdf_load_stackoverflow) |
Family
ID=132334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE486725D BE486725A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE486725A (enrdf_load_stackoverflow) |
-
0
- BE BE486725D patent/BE486725A/fr unknown
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