GB1234767A - Improvements in or relating to electro-acoustic transducers - Google Patents
Improvements in or relating to electro-acoustic transducersInfo
- Publication number
- GB1234767A GB1234767A GB4242067A GB4242067A GB1234767A GB 1234767 A GB1234767 A GB 1234767A GB 4242067 A GB4242067 A GB 4242067A GB 4242067 A GB4242067 A GB 4242067A GB 1234767 A GB1234767 A GB 1234767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- sheet
- layer
- diaphragm
- conductive
- 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
- 239000003990 capacitor Substances 0.000 abstract 2
- 239000003989 dielectric material Substances 0.000 abstract 2
- 125000006850 spacer group Chemical group 0.000 abstract 2
- -1 polyethylene terephthalate Polymers 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
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
- H04R19/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
1,234,767. Capacitor transducers. DECCA Ltd. 26 Nov., 1968 [18 Sept., 1967], No. 42420/67. Heading H4J. In a capacitor transducer, e.g. microphone or loud-speaker, a rigid, perforated conductive plate 14 is spaced from a diaphragm comprising a sheet 10 of non-conductive dielectric material having a conductive film 11 only on its surface remote from the plate 14. The surface of the plate 14 nearer the diaphragm has a layer 13 of non-conductive dielectric material with perforations aligned with those in the plate 14. The layer 13 and the sheet 10 may be of polyethylene terephthalate. A rectangular spacer 12 spaces the sheet 10 from the layer 13. The spacer 12 may be between the sheet 10 and the layer 13, but is preferably a raised rim integral with the plate 14. In push-pull loud-speakers there is a single diaphragm 30, 31, 32 between two perforated plates 33, 34 (Fig. 5) or a single perforated plate 45 (Fig. 6) is between two diaphragms 48. An array of transducers may be in a flat or curved plane or planes. Polarizing voltage is applied through resistance and audio signals are applied through a transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4242067A GB1234767A (en) | 1967-09-18 | 1967-09-18 | Improvements in or relating to electro-acoustic transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4242067A GB1234767A (en) | 1967-09-18 | 1967-09-18 | Improvements in or relating to electro-acoustic transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1234767A true GB1234767A (en) | 1971-06-09 |
Family
ID=10424334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4242067A Expired GB1234767A (en) | 1967-09-18 | 1967-09-18 | Improvements in or relating to electro-acoustic transducers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1234767A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289936A (en) * | 1980-04-07 | 1981-09-15 | Civitello John P | Electrostatic transducers |
| WO1982000559A1 (en) * | 1980-08-11 | 1982-02-18 | J Strickland | Improved step-up circuit for driving full-range-element electrostatic loudspeakers |
| US4796725A (en) * | 1981-09-14 | 1989-01-10 | Matsushita Electric Works, Ltd. | Electrostatic transducer |
| US5471540A (en) * | 1992-10-24 | 1995-11-28 | Sony Corporation | Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other |
| EP0973149A3 (en) * | 1998-07-16 | 2000-12-27 | Massachusetts Institute Of Technology | Ultrasonic transducers |
| US6775388B1 (en) | 1998-07-16 | 2004-08-10 | Massachusetts Institute Of Technology | Ultrasonic transducers |
| RU2287913C2 (en) * | 2005-06-10 | 2006-11-20 | Василий Арсеньевич Хабузов | Electrostatic acoustic transformer |
| US8027488B2 (en) | 1998-07-16 | 2011-09-27 | Massachusetts Institute Of Technology | Parametric audio system |
| CN102651836A (en) * | 2011-02-28 | 2012-08-29 | 千如电机工业股份有限公司 | Audio Drivers for Flat Electroacoustic Actuators |
| EP2512029A1 (en) * | 2011-04-11 | 2012-10-17 | ABC Taiwan Electronics Corp. | Audio signal driver for flat sound generator |
-
1967
- 1967-09-18 GB GB4242067A patent/GB1234767A/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289936A (en) * | 1980-04-07 | 1981-09-15 | Civitello John P | Electrostatic transducers |
| WO1982000559A1 (en) * | 1980-08-11 | 1982-02-18 | J Strickland | Improved step-up circuit for driving full-range-element electrostatic loudspeakers |
| US4323736A (en) * | 1980-08-11 | 1982-04-06 | Strickland James C | Step-up circuit for driving full-range-element electrostatic loudspeakers |
| US4796725A (en) * | 1981-09-14 | 1989-01-10 | Matsushita Electric Works, Ltd. | Electrostatic transducer |
| US5471540A (en) * | 1992-10-24 | 1995-11-28 | Sony Corporation | Electrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each other |
| EP0973149A3 (en) * | 1998-07-16 | 2000-12-27 | Massachusetts Institute Of Technology | Ultrasonic transducers |
| US6775388B1 (en) | 1998-07-16 | 2004-08-10 | Massachusetts Institute Of Technology | Ultrasonic transducers |
| US8027488B2 (en) | 1998-07-16 | 2011-09-27 | Massachusetts Institute Of Technology | Parametric audio system |
| US9036827B2 (en) | 1998-07-16 | 2015-05-19 | Massachusetts Institute Of Technology | Parametric audio system |
| RU2287913C2 (en) * | 2005-06-10 | 2006-11-20 | Василий Арсеньевич Хабузов | Electrostatic acoustic transformer |
| CN102651836A (en) * | 2011-02-28 | 2012-08-29 | 千如电机工业股份有限公司 | Audio Drivers for Flat Electroacoustic Actuators |
| EP2512029A1 (en) * | 2011-04-11 | 2012-10-17 | ABC Taiwan Electronics Corp. | Audio signal driver for flat sound generator |
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