BE374446A - - Google Patents
Info
- Publication number
- BE374446A BE374446A BE374446DA BE374446A BE 374446 A BE374446 A BE 374446A BE 374446D A BE374446D A BE 374446DA BE 374446 A BE374446 A BE 374446A
- Authority
- BE
- Belgium
- Prior art keywords
- sound
- improving
- resonator
- december
- present
- Prior art date
Links
- 230000006978 adaptation Effects 0.000 claims 1
- 241000269400 Sirenidae Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 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
- G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE374446A true BE374446A (h) |
Family
ID=45215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE374446D BE374446A (h) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE374446A (h) |
-
0
- BE BE374446D patent/BE374446A/fr unknown
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