DE266589C - - Google Patents
Info
- Publication number
- DE266589C DE266589C DENDAT266589D DE266589DA DE266589C DE 266589 C DE266589 C DE 266589C DE NDAT266589 D DENDAT266589 D DE NDAT266589D DE 266589D A DE266589D A DE 266589DA DE 266589 C DE266589 C DE 266589C
- Authority
- DE
- Germany
- Prior art keywords
- parts
- contact
- membrane
- sensitive
- microphone
- 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
- 230000035945 sensitivity Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 241000947840 Alteromonadales Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition 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)
- Piezo-Electric Transducers For Audible Bands (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE266589C true DE266589C (enrdf_load_stackoverflow) |
Family
ID=523716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT266589D Active DE266589C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE266589C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT266589D patent/DE266589C/de active Active
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