DE107680C - - Google Patents
Info
- Publication number
- DE107680C DE107680C DENDAT107680D DE107680DA DE107680C DE 107680 C DE107680 C DE 107680C DE NDAT107680 D DENDAT107680 D DE NDAT107680D DE 107680D A DE107680D A DE 107680DA DE 107680 C DE107680 C DE 107680C
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- microphone
- grain
- conductive
- ring
- 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 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000020985 whole grains Nutrition 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE107680C true DE107680C (enrdf_load_stackoverflow) |
Family
ID=377724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT107680D Active DE107680C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE107680C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT107680D patent/DE107680C/de active Active
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