GB863659A - Improvements in and relating to electro-acoustic transducers - Google Patents

Improvements in and relating to electro-acoustic transducers

Info

Publication number
GB863659A
GB863659A GB1648/59A GB164859A GB863659A GB 863659 A GB863659 A GB 863659A GB 1648/59 A GB1648/59 A GB 1648/59A GB 164859 A GB164859 A GB 164859A GB 863659 A GB863659 A GB 863659A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
oblique
curved
jan
conductive layer
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
GB1648/59A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB863659A publication Critical patent/GB863659A/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
    • 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)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

863,659. Loudspeakers; diaphragms. PHILCO CORPORATION. Jan. 16, 1959 [Jan. 17, 1958], No. 1648/59. Class 40 (4). The diaphragm 10 of an electrostatic loudspeaker is stretched over a curved support in the form of a lattice of insulating material which in effect divides the diaphragm into a number of independent elongated portions 24. The major dimension of each portion 24 is oblique to the axis or axes of the curved diaphragm which in this case is cylindrical. The major dimension is also oblique to the line of maximum stress in the diaphragm. In Fig. 1, the diaphragm is held between two spacing lattices 11, 12 on two perforated plates 13, 14 of electrically conductive material. The diaphragm comprises a conductive layer 19 between two insulating layers 25, 26 which are cemented to the spacers 11, 12. Leads 20, 21, 22 are connected respectively to the conductive layer 19 of the diaphragm and to lugs 15, 16 on the plates 13, 14. The diaphragm is tensioned as described in Specification 795,962. In another embodiment, Fig. 6, the diaphragm 42 is spaced from a single curved and perforation plate 40 by oblique spacing threads 41.
GB1648/59A 1958-01-17 1959-01-16 Improvements in and relating to electro-acoustic transducers Expired GB863659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US709680A US2975243A (en) 1958-01-17 1958-01-17 Transducers

Publications (1)

Publication Number Publication Date
GB863659A true GB863659A (en) 1961-03-22

Family

ID=24850892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1648/59A Expired GB863659A (en) 1958-01-17 1959-01-16 Improvements in and relating to electro-acoustic transducers

Country Status (2)

Country Link
US (1) US2975243A (en)
GB (1) GB863659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11825265B2 (en) 2019-05-07 2023-11-21 Warwick Acoustics Limited Electrostatic transducer and diaphragm

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135838A (en) * 1958-12-10 1964-06-02 Wright St George Lab Inc Electrostatic loudspeaker
GB1239658A (en) * 1969-04-17 1971-07-21
US3892927A (en) * 1973-09-04 1975-07-01 Theodore Lindenberg Full range electrostatic loudspeaker for audio frequencies
US5054081B1 (en) * 1985-04-02 1994-06-28 Roger A West Electrostatic transducer with improved bass response utilizing distributed bass resonance energy
CA1284837C (en) * 1987-06-18 1991-06-11 Highwood Audio Inc. Audio transducer
DE4338564A1 (en) * 1993-11-05 1995-05-11 Priamos Licht Ind & Dienstleis Control circuit for half-bridge or full-bridge inverters
US6304662B1 (en) 1998-01-07 2001-10-16 American Technology Corporation Sonic emitter with foam stator
US6188772B1 (en) 1998-01-07 2001-02-13 American Technology Corporation Electrostatic speaker 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
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
EP1632104A2 (en) * 2003-06-09 2006-03-08 American Technology Corporation System and method for delivering audio-visual content along a customer waiting line
WO2005043771A1 (en) * 2003-10-23 2005-05-12 American Technology Corporation Method of adusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same
CA2844996C (en) * 2006-04-14 2016-03-08 Murray R. Harman Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically
US8670581B2 (en) 2006-04-14 2014-03-11 Murray R. Harman Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically
US8275137B1 (en) 2007-03-22 2012-09-25 Parametric Sound Corporation Audio distortion correction for a parametric reproduction system
US8391514B2 (en) 2010-06-14 2013-03-05 Parametric Sound Corporation Parametric transducer systems and related methods
GB2490931A (en) * 2011-05-19 2012-11-21 Warwick Audio Technologies Ltd Electrostatic acoustic transducer
GB2490930A (en) 2011-05-19 2012-11-21 Warwick Audio Technologies Ltd A switching amplifier arrangement providing both signal drive and a high bias voltage for an electrostatic loudspeaker
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
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
GB2522932A (en) 2014-02-11 2015-08-12 Warwick Audio Technologies Ltd Improved electrostatic transducer
GB2522931A (en) * 2014-02-11 2015-08-12 Warwick Audio Technologies Ltd Improved electrostatic transducer
JP1549098S (en) * 2015-11-26 2016-05-16
USD905022S1 (en) * 2020-07-22 2020-12-15 Crown Tech Llc Microphone isolation shield
USD910604S1 (en) * 2020-07-22 2021-02-16 Crown Tech Llc Microphone isolation shield
USD929973S1 (en) * 2021-03-23 2021-09-07 Shenzhen Xunweijia Technology Development Co., Ltd. Microphone
USD948485S1 (en) * 2021-05-19 2022-04-12 Shenzhen Xunweijia Technology Development Co., Ltd. Shock mount for microphone

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622039A (en) * 1925-05-02 1927-03-22 Frederick W Lee Apparatus for and method of reproducing sound
US1644387A (en) * 1926-10-04 1927-10-04 Kyle Colin Acoustic device
US1811482A (en) * 1930-04-09 1931-06-23 Tayler Clive Osborne Electrostatic acoustic amplifying device
US1975801A (en) * 1930-12-15 1934-10-09 Sound Lab Corp Ltd Microphone
US2878323A (en) * 1954-04-26 1959-03-17 Philco Corp Transducers
US2824178A (en) * 1954-04-26 1958-02-18 Philco Corp Transducers
US2880260A (en) * 1956-05-07 1959-03-31 Electric Storage Battery Co Storage battery separator
US2863953A (en) * 1956-07-30 1958-12-09 Philco Corp Transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11825265B2 (en) 2019-05-07 2023-11-21 Warwick Acoustics Limited Electrostatic transducer and diaphragm

Also Published As

Publication number Publication date
US2975243A (en) 1961-03-14

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