BE354107A - - Google Patents
Info
- Publication number
- BE354107A BE354107A BE354107DA BE354107A BE 354107 A BE354107 A BE 354107A BE 354107D A BE354107D A BE 354107DA BE 354107 A BE354107 A BE 354107A
- Authority
- BE
- Belgium
- Prior art keywords
- transmitter
- diaphragm
- microphone
- receiver
- mouth
- Prior art date
Links
- 239000008187 granular material Substances 0.000 claims description 14
- 239000008188 pellet Substances 0.000 claims description 9
- 239000002775 capsule Substances 0.000 claims description 8
- 210000000056 organ Anatomy 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000001702 transmitter 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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
BE354107A true BE354107A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=28590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE354107D BE354107A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE354107A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
0
- BE BE354107D patent/BE354107A/fr unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2746997A1 (fr) | Ensemble telephonique transformable en casque telephonique | |
EP0002161A2 (fr) | Dispositif transducteur piezoélectrique et son procédé de fabrication | |
FR2563959A1 (fr) | Perfectionnements aux transducteurs electro-acoustiques a electret | |
BE354107A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
FR2465385A1 (fr) | Enceinte a plusieurs haut-parleurs pour vehicule automobile | |
WO2019166705A1 (fr) | Dispositif vibroacoustique | |
FR2858164A1 (fr) | Transducteur de restitution de son | |
FR2559984A1 (fr) | Microphone auriculaire de contact | |
JP5410333B2 (ja) | 単一指向性コンデンサマイクロホン | |
US2191993A (en) | Telephone hand-set with combined transmitter and dial | |
CN209234008U (zh) | 一种入耳式耳机 | |
FR2801163A1 (fr) | Haut-parleur a film piezo-electrique et casque a haut-parleur incorpore utilisant celui-ci | |
CN221842670U (zh) | 一种音量调节结构及麦克风 | |
EP0398212B1 (fr) | Combiné téléphonique | |
CH673356A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
US238902A (en) | Geoege m | |
BE427681A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
BE435296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
EP0225215B1 (fr) | Perfectionnements aux enceintes acoustiques et équipements associés | |
FR2649565A1 (fr) | Dispositif de couplage acoustique destine a effectuer des mesures et/ou des controles telephonometriques sur des combines telephoniques | |
CH120108A (fr) | Transmetteur téléphonique. | |
US747602A (en) | Battery-transmitter. | |
BE431282A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
BE417461A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
CA2010977A1 (fr) | Capsule piezoelectrique a portee plane et organes de maintien elastiques |