FR386507A - Bi-microphone - Google Patents
Bi-microphoneInfo
- Publication number
- FR386507A FR386507A FR386507DA FR386507A FR 386507 A FR386507 A FR 386507A FR 386507D A FR386507D A FR 386507DA FR 386507 A FR386507 A FR 386507A
- Authority
- FR
- France
- Prior art keywords
- 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.)
- Expired
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
- H04R21/023—Microphones with more than one granular chamber
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR386507T | 1908-01-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR386507A true FR386507A (en) | 1908-06-16 |
Family
ID=1432309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR386507D Expired FR386507A (en) | 1908-01-24 | 1908-01-24 | Bi-microphone |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR386507A (en) |
-
1908
- 1908-01-24 FR FR386507D patent/FR386507A/en not_active Expired
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