FR1072621A - Microphone - Google Patents
MicrophoneInfo
- Publication number
- FR1072621A FR1072621A FR1072621DA FR1072621A FR 1072621 A FR1072621 A FR 1072621A FR 1072621D A FR1072621D A FR 1072621DA FR 1072621 A FR1072621 A FR 1072621A
- 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
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 |
---|---|---|---|
FR1072621T | 1953-01-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1072621A true FR1072621A (en) | 1954-09-14 |
Family
ID=9605692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1072621D Expired FR1072621A (en) | 1953-01-09 | 1953-01-09 | Microphone |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1072621A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287135B (en) * | 1967-06-16 | 1969-01-16 | Telefunken Patent | Electroacoustic transducer with a membrane covered with a layer of semiconductor material |
FR2168396A1 (en) * | 1972-01-18 | 1973-08-31 | Siemens Ag |
-
1953
- 1953-01-09 FR FR1072621D patent/FR1072621A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287135B (en) * | 1967-06-16 | 1969-01-16 | Telefunken Patent | Electroacoustic transducer with a membrane covered with a layer of semiconductor material |
FR2168396A1 (en) * | 1972-01-18 | 1973-08-31 | Siemens Ag |
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