DE181520C - - Google Patents
Info
- Publication number
- DE181520C DE181520C DENDAT181520D DE181520DC DE181520C DE 181520 C DE181520 C DE 181520C DE NDAT181520 D DENDAT181520 D DE NDAT181520D DE 181520D C DE181520D C DE 181520DC DE 181520 C DE181520 C DE 181520C
- Authority
- DE
- Germany
- Prior art keywords
- microphone according
- membrane
- mouthpiece
- rubber
- pipe
- 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 17
- 239000007788 liquid Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid 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
- H04R21/028—Microphones with a fluid as 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)
- Pipe Accessories (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE181451T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE181520C true DE181520C (enExample) |
Family
ID=5716149
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT181520D Active DE181520C (enExample) | |||
| DENDAT181451D Active DE181451C (enExample) |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT181451D Active DE181451C (enExample) |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE181451C (enExample) |
| FR (1) | FR352133A (enExample) |
-
0
- DE DENDAT181520D patent/DE181520C/de active Active
- DE DENDAT181451D patent/DE181451C/de active Active
-
1905
- 1905-03-06 FR FR352133A patent/FR352133A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR352133A (fr) | 1905-08-03 |
| DE181451C (enExample) |
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