FR831735A - Perfectionnement aux microphones - Google Patents
Perfectionnement aux microphonesInfo
- Publication number
- FR831735A FR831735A FR831735DA FR831735A FR 831735 A FR831735 A FR 831735A FR 831735D A FR831735D A FR 831735DA FR 831735 A FR831735 A FR 831735A
- Authority
- FR
- France
- Prior art keywords
- microphone
- development
- microphone development
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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 |
---|---|---|---|
FR831735T | 1938-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR831735A true FR831735A (fr) | 1938-09-13 |
Family
ID=9293675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR831735D Expired FR831735A (fr) | 1938-01-06 | 1938-01-06 | Perfectionnement aux microphones |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR831735A (fr) |
-
1938
- 1938-01-06 FR FR831735D patent/FR831735A/fr not_active Expired
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