DE109872C - - Google Patents
Info
- Publication number
- DE109872C DE109872C DENDAT109872D DE109872DA DE109872C DE 109872 C DE109872 C DE 109872C DE NDAT109872 D DENDAT109872 D DE NDAT109872D DE 109872D A DE109872D A DE 109872DA DE 109872 C DE109872 C DE 109872C
- Authority
- DE
- Germany
- Prior art keywords
- coal
- lever
- microphone
- pivot point
- carrier
- 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
- 239000003245 coal Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims 3
- 239000002775 capsule Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 2
- 150000001721 carbon Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension 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)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE109872C true DE109872C (show.php) |
Family
ID=379727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT109872D Active DE109872C (show.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE109872C (show.php) |
-
0
- DE DENDAT109872D patent/DE109872C/de active Active
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