DE301724C - - Google Patents
Info
- Publication number
- DE301724C DE301724C DENDAT301724D DE301724DA DE301724C DE 301724 C DE301724 C DE 301724C DE NDAT301724 D DENDAT301724 D DE NDAT301724D DE 301724D A DE301724D A DE 301724DA DE 301724 C DE301724 C DE 301724C
- Authority
- DE
- Germany
- Prior art keywords
- microphone
- sound
- shaking
- membrane
- microphones
- 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
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)
- Circuit For Audible Band Transducer (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Prostheses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1664220X | 1915-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE301724C true DE301724C (enrdf_load_stackoverflow) |
Family
ID=7738668
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT309261D Active DE309261C (enrdf_load_stackoverflow) | 1915-12-31 | ||
DENDAT301724D Active DE301724C (enrdf_load_stackoverflow) | 1915-12-31 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT309261D Active DE309261C (enrdf_load_stackoverflow) | 1915-12-31 |
Country Status (4)
Country | Link |
---|---|
US (1) | US1664220A (enrdf_load_stackoverflow) |
DE (2) | DE301724C (enrdf_load_stackoverflow) |
FR (1) | FR535475A (enrdf_load_stackoverflow) |
GB (1) | GB148312A (enrdf_load_stackoverflow) |
-
0
- DE DENDAT309261D patent/DE309261C/de active Active
- DE DENDAT301724D patent/DE301724C/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 |
---|---|
DE309261C (enrdf_load_stackoverflow) | |
FR535475A (fr) | 1922-04-15 |
US1664220A (en) | 1928-03-27 |
GB148312A (en) | 1921-10-10 |
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