CA994467A - Decoding transducer devices - Google Patents

Decoding transducer devices

Info

Publication number
CA994467A
CA994467A CA173,048A CA173048A CA994467A CA 994467 A CA994467 A CA 994467A CA 173048 A CA173048 A CA 173048A CA 994467 A CA994467 A CA 994467A
Authority
CA
Canada
Prior art keywords
transducer devices
decoding transducer
decoding
devices
transducer
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
CA173,048A
Other languages
English (en)
Other versions
CA173048S (en
Inventor
Werner Baechtold
Ernst H. Rothauser
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
Application granted granted Critical
Publication of CA994467A publication Critical patent/CA994467A/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)
  • Analogue/Digital Conversion (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
CA173,048A 1972-06-30 1973-06-04 Decoding transducer devices Expired CA994467A (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
CA994467A true CA994467A (en) 1976-08-03

Family

ID=4356019

Family Applications (1)

Application Number Title Priority Date Filing Date
CA173,048A Expired CA994467A (en) 1972-06-30 1973-06-04 Decoding transducer devices

Country Status (7)

Country Link
JP (1) JPS5412049B2 (it)
CA (1) CA994467A (it)
CH (1) CH539845A (it)
DE (1) DE2328999C3 (it)
FR (1) FR2237392B1 (it)
GB (1) GB1382927A (it)
IT (1) IT989204B (it)

Families Citing this family (15)

* 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
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
FR2521382A2 (fr) * 1982-02-09 1983-08-12 Lectret Sa Transducteur acoustique
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
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 (it) * 1989-01-12 1990-07-30
DE19712728C1 (de) * 1997-03-26 1998-11-19 Dornier Gmbh Piezoelektrischer Lautsprecher
US6492761B1 (en) 1998-01-20 2002-12-10 Ericsson Inc. Digital piezoelectric transducers and methods
JP3642460B2 (ja) * 1998-12-07 2005-04-27 松下電器産業株式会社 デジタル式送受話器
US9167354B2 (en) 2011-03-09 2015-10-20 Sennheiser Electronic Gmbh & Co. Kg Electroacoustic sound transducer
WO2016002678A1 (ja) * 2014-06-30 2016-01-07 富士フイルム株式会社 電気音響変換フィルムおよびデジタルスピーカ

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

Also Published As

Publication number Publication date
JPS5412049B2 (it) 1979-05-19
IT989204B (it) 1975-05-20
DE2328999B2 (de) 1981-04-02
JPS4945673A (it) 1974-05-01
DE2328999C3 (de) 1981-12-10
GB1382927A (en) 1975-02-05
FR2237392A1 (it) 1975-02-07
DE2328999A1 (de) 1974-01-17
CH539845A (de) 1973-07-31
FR2237392B1 (it) 1978-12-01

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