CH240251A - Piezoelektrischer Schallempfänger. - Google Patents
Piezoelektrischer Schallempfänger.Info
- Publication number
- CH240251A CH240251A CH240251DA CH240251A CH 240251 A CH240251 A CH 240251A CH 240251D A CH240251D A CH 240251DA CH 240251 A CH240251 A CH 240251A
- Authority
- CH
- Switzerland
- Prior art keywords
- sound receiver
- piezoelectric sound
- piezoelectric
- receiver
- sound
- Prior art date
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 |
---|---|---|---|
CH920129X | 1944-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH240251A true CH240251A (de) | 1945-12-15 |
Family
ID=4548118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH240251D CH240251A (de) | 1944-07-28 | 1944-07-28 | Piezoelektrischer Schallempfänger. |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH240251A (de) |
FR (1) | FR920129A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202962A (en) * | 1959-09-03 | 1965-08-24 | Honeywell Inc | Transducer |
US4127749A (en) * | 1976-09-09 | 1978-11-28 | Matsushita Electric Industrial Co., Ltd. | Microphone capable of cancelling mechanical generated noise |
-
1944
- 1944-07-28 CH CH240251D patent/CH240251A/de unknown
-
1945
- 1945-10-16 FR FR920129D patent/FR920129A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202962A (en) * | 1959-09-03 | 1965-08-24 | Honeywell Inc | Transducer |
US4127749A (en) * | 1976-09-09 | 1978-11-28 | Matsushita Electric Industrial Co., Ltd. | Microphone capable of cancelling mechanical generated noise |
Also Published As
Publication number | Publication date |
---|---|
FR920129A (fr) | 1947-03-28 |
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