GB1382927A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number
GB1382927A
GB1382927A GB2620973A GB2620973A GB1382927A GB 1382927 A GB1382927 A GB 1382927A GB 2620973 A GB2620973 A GB 2620973A GB 2620973 A GB2620973 A GB 2620973A GB 1382927 A GB1382927 A GB 1382927A
Authority
GB
United Kingdom
Prior art keywords
electrodes
bit
layers
plate
signals
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
GB2620973A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1382927A publication Critical patent/GB1382927A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0603—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a piezoelectric bender, e.g. bimorph
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Analogue/Digital Conversion (AREA)
GB2620973A 1972-06-30 1973-06-01 Electroacoustic transducer Expired GB1382927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH982372A CH539845A (de) 1972-06-30 1972-06-30 Elektroakustischer Wandler

Publications (1)

Publication Number Publication Date
GB1382927A true GB1382927A (en) 1975-02-05

Family

ID=4356019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2620973A Expired GB1382927A (en) 1972-06-30 1973-06-01 Electroacoustic transducer

Country Status (7)

Country Link
JP (1) JPS5412049B2 (US08142518-20120327-C00011.png)
CA (1) CA994467A (US08142518-20120327-C00011.png)
CH (1) CH539845A (US08142518-20120327-C00011.png)
DE (1) DE2328999C3 (US08142518-20120327-C00011.png)
FR (1) FR2237392B1 (US08142518-20120327-C00011.png)
GB (1) GB1382927A (US08142518-20120327-C00011.png)
IT (1) IT989204B (US08142518-20120327-C00011.png)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184116A (en) * 1977-04-07 1980-01-15 Argos Products Company, Inc. Communication system having analog-to-digital-to-analog conversion means
US4395593A (en) * 1979-11-27 1983-07-26 Bell Telephone Laboratories, Incorporated Acoustic differential digital coder
US4515997A (en) * 1982-09-23 1985-05-07 Stinger Jr Walter E Direct digital loudspeaker
US4783821A (en) * 1987-11-25 1988-11-08 The Regents Of The University Of California IC processed piezoelectric microphone
EP0868108A2 (de) * 1997-03-26 1998-09-30 DORNIER GmbH Piezoelektrischer Lautsprecher
WO1999037123A1 (en) * 1998-01-20 1999-07-22 Ericsson Inc. Digital piezoelectric transducers and methods
EP1009144A2 (en) * 1998-12-07 2000-06-14 Matsushita Electric Industrial Co., Ltd. Digital telephone trasmitter/receiver
US20170111745A1 (en) * 2014-06-30 2017-04-20 Fujifilm Corporation Electro-acoustic conversion film and digital speaker

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120710A (en) * 1975-04-15 1976-10-22 Kawai Musical Instr Mfg Co Ltd Digital speakes system
JPS51123134A (en) * 1975-04-18 1976-10-27 Kawai Musical Instr Mfg Co Ltd Digital type speaker and digital type speaker system
JPS51126120A (en) * 1975-04-25 1976-11-04 Kawai Musical Instr Mfg Co Ltd Degital speaker system
FR2521382A2 (fr) * 1982-02-09 1983-08-12 Lectret Sa Transducteur acoustique
JPH04501046A (ja) * 1988-09-26 1992-02-20 エー　ヴェー　デー　エレクトロニク―ヴェルケ　ドイチュラント　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング スピーカ
JPH0295405U (US08142518-20120327-C00011.png) * 1989-01-12 1990-07-30
US9167354B2 (en) 2011-03-09 2015-10-20 Sennheiser Electronic Gmbh & Co. Kg Electroacoustic sound transducer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153229A (en) * 1963-05-13 1964-10-13 Charles E Roberts Digital actuator and direct digital transducer employing same
US3286032A (en) * 1963-06-03 1966-11-15 Itt Digital microphone
CH466376A (de) * 1968-03-01 1968-12-15 Ibm Anordnung zur Umwandlung von Drücken in digitale elektrische Signale

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184116A (en) * 1977-04-07 1980-01-15 Argos Products Company, Inc. Communication system having analog-to-digital-to-analog conversion means
US4395593A (en) * 1979-11-27 1983-07-26 Bell Telephone Laboratories, Incorporated Acoustic differential digital coder
US4515997A (en) * 1982-09-23 1985-05-07 Stinger Jr Walter E Direct digital loudspeaker
US4783821A (en) * 1987-11-25 1988-11-08 The Regents Of The University Of California IC processed piezoelectric microphone
EP0868108A2 (de) * 1997-03-26 1998-09-30 DORNIER GmbH Piezoelektrischer Lautsprecher
EP0868108A3 (de) * 1997-03-26 2005-06-15 DORNIER GmbH Piezoelektrischer Lautsprecher
WO1999037123A1 (en) * 1998-01-20 1999-07-22 Ericsson Inc. Digital piezoelectric transducers and methods
US6492761B1 (en) 1998-01-20 2002-12-10 Ericsson Inc. Digital piezoelectric transducers and methods
EP1009144A2 (en) * 1998-12-07 2000-06-14 Matsushita Electric Industrial Co., Ltd. Digital telephone trasmitter/receiver
EP1009144A3 (en) * 1998-12-07 2003-02-05 Matsushita Electric Industrial Co., Ltd. Digital telephone trasmitter/receiver
US20170111745A1 (en) * 2014-06-30 2017-04-20 Fujifilm Corporation Electro-acoustic conversion film and digital speaker

Also Published As

Publication number Publication date
DE2328999A1 (de) 1974-01-17
FR2237392A1 (US08142518-20120327-C00011.png) 1975-02-07
CA994467A (en) 1976-08-03
FR2237392B1 (US08142518-20120327-C00011.png) 1978-12-01
IT989204B (it) 1975-05-20
JPS4945673A (US08142518-20120327-C00011.png) 1974-05-01
CH539845A (de) 1973-07-31
DE2328999B2 (de) 1981-04-02
DE2328999C3 (de) 1981-12-10
JPS5412049B2 (US08142518-20120327-C00011.png) 1979-05-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee