DE220904C - - Google Patents
Info
- Publication number
- DE220904C DE220904C DENDAT220904D DE220904DA DE220904C DE 220904 C DE220904 C DE 220904C DE NDAT220904 D DENDAT220904 D DE NDAT220904D DE 220904D A DE220904D A DE 220904DA DE 220904 C DE220904 C DE 220904C
- Authority
- DE
- Germany
- Prior art keywords
- sound
- lever
- microphone
- vibrations
- transmission
- 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
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 8
- 238000004904 shortening Methods 0.000 claims 4
- 230000001939 inductive effect Effects 0.000 claims 2
- 238000013016 damping Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002023 wood 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
- H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE220904T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE220904C true DE220904C (cs) |
Family
ID=5837146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT220904D Active DE220904C (cs) |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE220904C (cs) |
| FR (1) | FR404417A (cs) |
-
0
- DE DENDAT220904D patent/DE220904C/de active Active
- FR FR404417D patent/FR404417A/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR404417A (cs) |
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