GB1428405A - Electro-acoustic transducers - Google Patents

Electro-acoustic transducers

Info

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
Application number
GB2496072A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB2496072A priority Critical patent/GB1428405A/en
Priority to NL7307357A priority patent/NL7307357A/xx
Priority to IT68558/73A priority patent/IT986369B/en
Priority to FR7319150A priority patent/FR2189973A1/fr
Priority to JP48058274A priority patent/JPS4951929A/ja
Priority to AT463873A priority patent/AT318032B/en
Priority to DE2327143A priority patent/DE2327143A1/en
Priority to US00364486A priority patent/US3833771A/en
Priority to DK369475A priority patent/DK369475A/da
Publication of GB1428405A publication Critical patent/GB1428405A/en
Expired legal-status Critical Current

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
    • 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)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (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.
GB2496072A 1972-05-26 1972-05-26 Electro-acoustic transducers Expired GB1428405A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB2496072A GB1428405A (en) 1972-05-26 1972-05-26 Electro-acoustic transducers
NL7307357A NL7307357A (en) 1972-05-26 1973-05-25
IT68558/73A IT986369B (en) 1972-05-26 1973-05-25 ELECTROACOUSTIC TRANSDUCER
FR7319150A FR2189973A1 (en) 1972-05-26 1973-05-25
JP48058274A JPS4951929A (en) 1972-05-26 1973-05-26
AT463873A AT318032B (en) 1972-05-26 1973-05-28 Transducer
DE2327143A DE2327143A1 (en) 1972-05-26 1973-05-28 SOUND CONVERTER
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898598A (en) * 1974-01-24 1975-08-05 Foster Tsushin Kogyo Dynamic electroacoustic transducer
US4480155A (en) * 1982-03-01 1984-10-30 Magnepan, Inc. Diaphragm type magnetic transducer
US4471172A (en) * 1982-03-01 1984-09-11 Magnepan, Inc. Planar diaphragm transducer with improved magnetic circuit
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
US20050100181A1 (en) * 1998-09-24 2005-05-12 Particle Measuring Systems, Inc. Parametric transducer having an emitter film
US6850623B1 (en) 1999-10-29 2005-02-01 American Technology Corporation Parametric loudspeaker with improved phase characteristics
AU2002243627A1 (en) * 2001-01-22 2002-08-19 American Technology Corporation 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
EP2580922B1 (en) 2010-06-14 2019-03-20 Turtle Beach Corporation Improved parametric signal processing and emitter systems and related methods
WO2013106596A1 (en) 2012-01-10 2013-07-18 Parametric Sound Corporation Amplification systems, 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
US8958580B2 (en) 2012-04-18 2015-02-17 Turtle Beach Corporation Parametric transducers and 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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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
IT986369B (en) 1975-01-30
JPS4951929A (en) 1974-05-20
US3833771A (en) 1974-09-03
AT318032B (en) 1974-09-25
DE2327143A1 (en) 1973-12-06
NL7307357A (en) 1973-11-28
FR2189973A1 (en) 1974-01-25

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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