DE165436C - - Google Patents
Info
- Publication number
- DE165436C DE165436C DENDAT165436D DE165436DA DE165436C DE 165436 C DE165436 C DE 165436C DE NDAT165436 D DENDAT165436 D DE NDAT165436D DE 165436D A DE165436D A DE 165436DA DE 165436 C DE165436 C DE 165436C
- Authority
- DE
- Germany
- Prior art keywords
- sound
- membranes
- chamber
- screwed
- receiving channels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012528 membrane Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims 1
- 229920001875 Ebonite Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000034 method 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
- H04R21/023—Microphones with more than one granular chamber
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE165436C true DE165436C (esLanguage) |
Family
ID=430940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT165436D Active DE165436C (esLanguage) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE165436C (esLanguage) |
-
0
- DE DENDAT165436D patent/DE165436C/de active Active
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