BE435296A - - Google Patents
Info
- Publication number
- BE435296A BE435296A BE435296DA BE435296A BE 435296 A BE435296 A BE 435296A BE 435296D A BE435296D A BE 435296DA BE 435296 A BE435296 A BE 435296A
- Authority
- BE
- Belgium
- Prior art keywords
- diaphragm
- microphone according
- chambers
- microphone
- conical central
- Prior art date
Links
- 239000008188 pellet Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 1
- 238000002955 isolation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-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
- 239000010974 bronze Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 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)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
BE435296A true BE435296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=94239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE435296D BE435296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE435296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
0
- BE BE435296D patent/BE435296A/fr unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2827731A1 (fr) | Haut-parleur a radiation directe et rayonnement optimise | |
EP0002161A2 (fr) | Dispositif transducteur piezoélectrique et son procédé de fabrication | |
FR2527010A1 (fr) | Element galvanique, notamment cellule comportant des electrodes metallique et a gaz | |
BE435296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
WO2019166705A1 (fr) | Dispositif vibroacoustique | |
CH284628A (fr) | Dispositif électro-acoustique auxiliaire pour appareil de téléphone. | |
FR2674092A3 (fr) | Haut-parleur perfectionne. | |
CH356047A (fr) | Avertisseur électro-acoustique | |
CA2002803A1 (fr) | Transducteur lectroacoustique | |
BE354107A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
BE504911A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
US977620A (en) | Telephone-transmitter. | |
CH91061A (fr) | Transmetteur téléphonique. | |
FR2689963A1 (fr) | Briquet à flamme à modulation acoustique. | |
BE415214A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
BE474810A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
FR2525062A1 (fr) | Microphone de transmission | |
CH120108A (fr) | Transmetteur téléphonique. | |
BE439769A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
BE373314A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
CH647371A5 (en) | Electroacoustic enclosure intended to produce sounds by means of several loudspeakers | |
CH249753A (fr) | Microphone. | |
CH324246A (fr) | Appareil d'écoute pour la détection des écoulements de fluides | |
BE396671A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
FR3078225A1 (fr) | Banc de diffusion sonore |