CA953410A - Diaphragm assembly for electret transducer - Google Patents
Diaphragm assembly for electret transducerInfo
- Publication number
- CA953410A CA953410A CA151,066A CA151066A CA953410A CA 953410 A CA953410 A CA 953410A CA 151066 A CA151066 A CA 151066A CA 953410 A CA953410 A CA 953410A
- Authority
- CA
- Canada
- Prior art keywords
- diaphragm assembly
- electret transducer
- electret
- transducer
- diaphragm
- 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
- H04R19/00—Electrostatic transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US19659271A | 1971-11-08 | 1971-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA953410A true CA953410A (en) | 1974-08-20 |
Family
ID=22726015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA151,066A Expired CA953410A (en) | 1971-11-08 | 1972-09-06 | Diaphragm assembly for electret transducer |
Country Status (2)
Country | Link |
---|---|
US (1) | US3740496A (en) |
CA (1) | CA953410A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4861126A (en) * | 1971-12-02 | 1973-08-27 | ||
US4160881A (en) * | 1977-12-28 | 1979-07-10 | Microtel B.V. | Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures |
GB2044037B (en) * | 1978-12-23 | 1983-03-23 | Tokyo Shibaura Electric Co | Electrostatic microphone |
US4418246A (en) * | 1980-10-29 | 1983-11-29 | Tibbetts Industries, Inc. | Cell assembly for electret transducer |
US4450930A (en) * | 1982-09-03 | 1984-05-29 | Industrial Research Products, Inc. | Microphone with stepped response |
US4598201A (en) * | 1984-08-09 | 1986-07-01 | Mine Safety Appliances Company | Infrared fluid analyzer employing a pneumatic detector |
US5335286A (en) * | 1992-02-18 | 1994-08-02 | Knowles Electronics, Inc. | Electret assembly |
FI115598B (en) * | 1998-04-27 | 2005-05-31 | Panphonics Oy | Acoustic element |
US7751579B2 (en) * | 2003-06-13 | 2010-07-06 | Etymotic Research, Inc. | Acoustically transparent debris barrier for audio transducers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567889A (en) * | 1950-02-24 | 1951-09-11 | George L Carrington | Condenser microphone structure |
BE623239A (en) * | 1961-10-04 | |||
DE1212157B (en) * | 1964-12-17 | 1966-03-10 | Robert Bosch Elektronik | membrane |
US3663768A (en) * | 1971-01-15 | 1972-05-16 | Northern Electric Co | Electret transducer |
-
1971
- 1971-11-08 US US00196592A patent/US3740496A/en not_active Expired - Lifetime
-
1972
- 1972-09-06 CA CA151,066A patent/CA953410A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3740496A (en) | 1973-06-19 |
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