GB1428405A - Electro-acoustic transducers - Google Patents
Electro-acoustic transducersInfo
- Publication number
- GB1428405A GB1428405A GB2496072A GB2496072A GB1428405A GB 1428405 A GB1428405 A GB 1428405A GB 2496072 A GB2496072 A GB 2496072A GB 2496072 A GB2496072 A GB 2496072A GB 1428405 A GB1428405 A GB 1428405A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame members
- diaphragm
- conductor
- frame
- magnet arrangement
- 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
- 239000004020 conductor Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 229920002223 polystyrene Polymers 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/04—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by acoustic means
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
1428405 Electromagnetic transducers RANK ORGANISATION Ltd 3 May 1973 [26 May 1972] 24960/72 Heading H4J An electroacoustic transducer has two frame members 1 (Figs. 1, 2) preferably of polystyrene, each having an upstanding peripheral wall 4. A non-magnetic diaphragm 5 (Fig. 3) (e.g. of "MELINEX" (Registered Trade Mark) carrying a conductor 6 having parallel strip portions is located between and separates the frame members 1. The walls 4 of the frame members 1 project away from one another. Two magnet arrangements 7 rest on respective inwardly directed flanges 3 of the frame members 1. Each magnet arrangement 7 has parallel, spaced elongate magnet poles facing the diaphragm 5. The poles are aligned with the spaces between the strips of conductor 6 and adjacent poles are of opposite polarity. On each side a perforated backing sheet 9, e.g. of cadmium plated mild steel, contacts that face of the magnet arrangement 7 remote from the diaphragm 5. All the components are clamped together along at least two sides of the frame members 1. Several different diaphragms may be interposed between the frame members 1. Each magnet arrangement 7 preferably incorporates a perforated sheet of material consisting of magnetic particles embedded in a matrix of non-magnetic material. Alternatively each magnet arrangement consists of a plurality of strips of such material. The sheet or individual strips may be formed of stacked laminations. Each frame member 1 has pins 10 extending through holes in the other frame member, the ends of the pins 10 (Fig. 4) being deformed to form rivet heads clamping the assembly together. Gaps 3B in the frame flanges house a plug to connect to the ends of the conductor 6. Alternatively the ends of the conductor 6 may project beyond the confines of the frame member 1. In an alternative construction (Figs. 5 to 8, not shown), two opposite upstanding flanges 4 of each frame member 1 are bent inwardly to hold the magnet arrangement in place and the outer edges of adjacent faces of the frame members 4 are heat fused to one another (e.g. at an outwardly projecting lip) with the diaphragm 5 held between the members 4. In this arrangement the diaphragm 5 is gripped at two opposite edges only.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2496072A GB1428405A (en) | 1972-05-26 | 1972-05-26 | Electro-acoustic transducers |
| IT68558/73A IT986369B (en) | 1972-05-26 | 1973-05-25 | ELECTROACOUSTIC TRANSDUCER |
| NL7307357A NL7307357A (en) | 1972-05-26 | 1973-05-25 | |
| FR7319150A FR2189973A1 (en) | 1972-05-26 | 1973-05-25 | |
| JP48058274A JPS4951929A (en) | 1972-05-26 | 1973-05-26 | |
| DE2327143A DE2327143A1 (en) | 1972-05-26 | 1973-05-28 | SOUND CONVERTER |
| AT463873A AT318032B (en) | 1972-05-26 | 1973-05-28 | Transducer |
| US00364486A US3833771A (en) | 1972-05-26 | 1973-05-29 | Electro-acoustic transducers |
| DK369475A DK369475A (en) | 1972-05-26 | 1975-08-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2496072A GB1428405A (en) | 1972-05-26 | 1972-05-26 | Electro-acoustic transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1428405A true GB1428405A (en) | 1976-03-17 |
Family
ID=10219997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2496072A Expired GB1428405A (en) | 1972-05-26 | 1972-05-26 | Electro-acoustic transducers |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3833771A (en) |
| JP (1) | JPS4951929A (en) |
| AT (1) | AT318032B (en) |
| DE (1) | DE2327143A1 (en) |
| FR (1) | FR2189973A1 (en) |
| GB (1) | GB1428405A (en) |
| IT (1) | IT986369B (en) |
| NL (1) | NL7307357A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008714A (en) * | 1997-11-13 | 1999-12-28 | Okuda; Masanao | Thin-Structured electromagnetic transducer |
| CN105357623A (en) * | 2015-11-10 | 2016-02-24 | 重庆夏朗科技有限公司 | Washer, magnet and rivet assembly method |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898598A (en) * | 1974-01-24 | 1975-08-05 | Foster Tsushin Kogyo | Dynamic electroacoustic transducer |
| US4471172A (en) * | 1982-03-01 | 1984-09-11 | Magnepan, Inc. | Planar diaphragm transducer with improved magnetic circuit |
| US4480155A (en) * | 1982-03-01 | 1984-10-30 | Magnepan, Inc. | Diaphragm type magnetic transducer |
| US4471173A (en) * | 1982-03-01 | 1984-09-11 | Magnepan, Inc. | Piston-diaphragm speaker |
| US5430805A (en) * | 1990-12-27 | 1995-07-04 | Chain Reactions, Inc. | Planar electromagnetic transducer |
| KR970014094A (en) * | 1995-08-31 | 1997-03-29 | 김광호 | Guide holder for the close-up image sensor |
| US6188772B1 (en) | 1998-01-07 | 2001-02-13 | American Technology Corporation | Electrostatic speaker with foam stator |
| US6304662B1 (en) | 1998-01-07 | 2001-10-16 | American Technology Corporation | Sonic emitter with foam stator |
| US20020076069A1 (en) * | 1998-01-07 | 2002-06-20 | American Technology Corporation | Sonic emitter with foam stator |
| US6175636B1 (en) | 1998-06-26 | 2001-01-16 | American Technology Corporation | Electrostatic speaker with moveable diaphragm edges |
| US6850623B1 (en) | 1999-10-29 | 2005-02-01 | American Technology Corporation | Parametric loudspeaker with improved phase characteristics |
| US20050100181A1 (en) * | 1998-09-24 | 2005-05-12 | Particle Measuring Systems, Inc. | Parametric transducer having an emitter film |
| KR20030079956A (en) * | 2001-01-22 | 2003-10-10 | 어메리컨 테크놀로지 코포레이션 | Improved single-ended planar-magnetic speaker |
| US6934402B2 (en) * | 2001-01-26 | 2005-08-23 | American Technology Corporation | Planar-magnetic speakers with secondary magnetic structure |
| US7564981B2 (en) | 2003-10-23 | 2009-07-21 | American Technology Corporation | Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same |
| US8275137B1 (en) | 2007-03-22 | 2012-09-25 | Parametric Sound Corporation | Audio distortion correction for a parametric reproduction system |
| JP5825737B2 (en) | 2010-06-14 | 2015-12-02 | パラメトリック サウンド コーポレーション | Parametric signal processing / radiation system and related methods |
| US9036831B2 (en) | 2012-01-10 | 2015-05-19 | Turtle Beach Corporation | Amplification system, carrier tracking systems and related methods for use in parametric sound systems |
| CN202551324U (en) * | 2012-04-09 | 2012-11-21 | 瑞声光电科技(常州)有限公司 | voice coil |
| WO2013158298A1 (en) | 2012-04-18 | 2013-10-24 | Parametric Sound Corporation | Parametric transducers related methods |
| US8934650B1 (en) | 2012-07-03 | 2015-01-13 | Turtle Beach Corporation | Low profile parametric transducers and related methods |
| US8903104B2 (en) | 2013-04-16 | 2014-12-02 | Turtle Beach Corporation | Video gaming system with ultrasonic speakers |
| US8988911B2 (en) | 2013-06-13 | 2015-03-24 | Turtle Beach Corporation | Self-bias emitter circuit |
| US9332344B2 (en) | 2013-06-13 | 2016-05-03 | Turtle Beach Corporation | Self-bias emitter circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3164686A (en) * | 1959-09-21 | 1965-01-05 | Tibbetts Industries | Electrodynamic transducer |
| US3674946A (en) * | 1970-12-23 | 1972-07-04 | Magnepan Inc | Electromagnetic transducer |
-
1972
- 1972-05-26 GB GB2496072A patent/GB1428405A/en not_active Expired
-
1973
- 1973-05-25 NL NL7307357A patent/NL7307357A/xx unknown
- 1973-05-25 FR FR7319150A patent/FR2189973A1/fr not_active Withdrawn
- 1973-05-25 IT IT68558/73A patent/IT986369B/en active
- 1973-05-26 JP JP48058274A patent/JPS4951929A/ja active Pending
- 1973-05-28 DE DE2327143A patent/DE2327143A1/en active Pending
- 1973-05-28 AT AT463873A patent/AT318032B/en not_active IP Right Cessation
- 1973-05-29 US US00364486A patent/US3833771A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008714A (en) * | 1997-11-13 | 1999-12-28 | Okuda; Masanao | Thin-Structured electromagnetic transducer |
| CN105357623A (en) * | 2015-11-10 | 2016-02-24 | 重庆夏朗科技有限公司 | Washer, magnet and rivet assembly method |
| CN105357623B (en) * | 2015-11-10 | 2018-03-27 | 重庆夏朗科技有限公司 | A kind of washer, magnet and rivet assembly method |
Also Published As
| Publication number | Publication date |
|---|---|
| AT318032B (en) | 1974-09-25 |
| US3833771A (en) | 1974-09-03 |
| IT986369B (en) | 1975-01-30 |
| JPS4951929A (en) | 1974-05-20 |
| FR2189973A1 (en) | 1974-01-25 |
| NL7307357A (en) | 1973-11-28 |
| DE2327143A1 (en) | 1973-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |