DE309261C - - Google Patents
Info
- Publication number
- DE309261C DE309261C DENDAT309261D DE309261DA DE309261C DE 309261 C DE309261 C DE 309261C DE NDAT309261 D DENDAT309261 D DE NDAT309261D DE 309261D A DE309261D A DE 309261DA DE 309261 C DE309261 C DE 309261C
- Authority
- DE
- Germany
- Prior art keywords
- microphone
- larynx
- shaking
- electrodes
- sound
- 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
- 210000000867 larynx Anatomy 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012528 membrane 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/14—Throat mountings for microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Prostheses (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1664220X | 1915-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE309261C true DE309261C (cs) |
Family
ID=7738668
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT301724D Active DE301724C (cs) | 1915-12-31 | ||
| DENDAT309261D Active DE309261C (cs) | 1915-12-31 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT301724D Active DE301724C (cs) | 1915-12-31 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1664220A (cs) |
| DE (2) | DE309261C (cs) |
| FR (1) | FR535475A (cs) |
| GB (1) | GB148312A (cs) |
-
0
- DE DENDAT301724D patent/DE301724C/de active Active
- DE DENDAT309261D patent/DE309261C/de active Active
-
1920
- 1920-07-08 FR FR535475D patent/FR535475A/fr not_active Expired
- 1920-07-09 GB GB20226/20A patent/GB148312A/en not_active Expired
-
1921
- 1921-08-26 US US495780A patent/US1664220A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB148312A (en) | 1921-10-10 |
| US1664220A (en) | 1928-03-27 |
| FR535475A (fr) | 1922-04-15 |
| DE301724C (cs) |
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