BR7904532A - Transformador eletro-acustico - Google Patents

Transformador eletro-acustico

Info

Publication number
BR7904532A
BR7904532A BR7904532A BR7904532A BR7904532A BR 7904532 A BR7904532 A BR 7904532A BR 7904532 A BR7904532 A BR 7904532A BR 7904532 A BR7904532 A BR 7904532A BR 7904532 A BR7904532 A BR 7904532A
Authority
BR
Brazil
Prior art keywords
acoustic transformer
electric acoustic
electric
transformer
acoustic
Prior art date
Application number
BR7904532A
Other languages
English (en)
Inventor
E Martin
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR7904532A publication Critical patent/BR7904532A/pt

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)
BR7904532A 1978-07-17 1979-07-16 Transformador eletro-acustico BR7904532A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2831411A DE2831411C2 (de) 1978-07-17 1978-07-17 Elektroakustischer Wandler mit mit piezoelektrischer Schicht versehener Membran

Publications (1)

Publication Number Publication Date
BR7904532A true BR7904532A (pt) 1980-04-08

Family

ID=6044619

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7904532A BR7904532A (pt) 1978-07-17 1979-07-16 Transformador eletro-acustico

Country Status (11)

Country Link
US (1) US4292561A (pt)
EP (1) EP0007436B1 (pt)
JP (1) JPS596119B2 (pt)
AR (1) AR216604A1 (pt)
AT (1) ATE1659T1 (pt)
AU (1) AU524112B2 (pt)
BR (1) BR7904532A (pt)
DE (1) DE2831411C2 (pt)
GB (1) GB2025734B (pt)
IN (1) IN150914B (pt)
ZA (1) ZA793580B (pt)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007834A1 (de) * 1980-02-29 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
DE3007808A1 (de) * 1980-02-29 1981-09-10 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
DE3007773A1 (de) * 1980-02-29 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
DE3107344A1 (de) * 1981-02-26 1982-11-18 Siemens AG, 1000 Berlin und 8000 München Anordnung zur frequenzgangverbesserung von elektroakustischen wandlern
DE3127406C2 (de) * 1981-07-10 1986-03-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Modulationsvorrichtung zur optischen Signalübertragung
US4607186A (en) * 1981-11-17 1986-08-19 Matsushita Electric Industrial Co. Ltd. Ultrasonic transducer with a piezoelectric element
US4418248A (en) * 1981-12-11 1983-11-29 Koss Corporation Dual element headphone
US4413198A (en) * 1981-12-30 1983-11-01 Motorola, Inc. Piezoelectric transducer apparatus
EP0085194A1 (en) * 1982-01-19 1983-08-10 Hugo R. Michiels Electro-acoustical converter
FR2542552B1 (fr) * 1983-03-07 1986-04-11 Thomson Csf Transducteur electroacoustique a diaphragme piezo-electrique
CA1202713A (en) * 1984-03-16 1986-04-01 Beverley W. Gumb Transmitter assembly for a telephone handset
EP0158230B1 (de) * 1984-04-11 1987-07-29 Siemens Aktiengesellschaft Piezoelektrisch-akustischer Wandler für elektroakustische Kapseln mit Konstruktionsausführung für die Montage
EP0182822A1 (de) * 1984-06-12 1986-06-04 WOLF, Ottokar John Telefonhygiene
GB2164819B (en) * 1984-09-19 1988-09-28 Gibson Dawson Joseph Microphone
DE3518819A1 (de) * 1985-05-24 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
DE3602351C1 (de) * 1986-01-27 1986-12-11 Endress + Hauser GmbH + Co., 79689 Maulburg Schallwandlersystem
JPS63143621U (pt) * 1987-03-12 1988-09-21
JPS6427322U (pt) * 1987-08-11 1989-02-16
US4918738A (en) * 1988-12-05 1990-04-17 Federal Signal Corporation Structural assembly for housing an acoustical system
JPH0727715Y2 (ja) * 1989-02-06 1995-06-21 株式会社東芝 ハンドセット
WO2002052894A1 (en) * 2000-12-22 2002-07-04 Brüel & Kjær Sound & Vibration Measurement A/S A micromachined capacitive transducer
JP4540659B2 (ja) * 2006-12-19 2010-09-08 岩崎通信機株式会社 送話器
WO2013183098A1 (ja) * 2012-06-06 2013-12-12 Ｎｅｃカシオモバイルコミュニケーションズ株式会社 スピーカ装置及び電子機器
US20170111731A1 (en) * 2015-10-20 2017-04-20 Sonion Nederland B.V. Microphone assembly with suppressed frequency response

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069685B (de) * 1959-11-26 Wien Dipl.-Ing. Dr. techn. Walter Fiala Elektroakustischer W'andler mit Reibungshemmung
NL78163C (pt) * 1950-05-11
DE1076182B (de) * 1957-02-21 1960-02-25 F & H Schumann G M B H Filteranordnung fuer elektro-akustische Wandler
DE1288146B (de) * 1962-10-31 1969-01-30 Siemens Ag Elektroakustischer Wandler
DE1462228B2 (de) * 1965-09-30 1971-12-09 Siemens AG, 1000 Berlin u. 8000 München Mikrofon mit vormembran
BE759888A (fr) * 1969-12-05 1971-06-04 Siemens Ag Transducteur electro-acoustique, notamment microphone pour installations telephoniques
US3708702A (en) * 1970-12-02 1973-01-02 Siemens Ag Electroacoustic transducer
ZA728218B (en) * 1971-11-23 1973-07-25 Plessey Ducon Ltd Microphone damping
CH528197A (de) * 1971-12-20 1972-09-15 Ibm Gehäuseanordnung mit einem elektro-akustischen Wandler, und Verwendung derselben in einem Telefonapparat einer Nachrichtenübertragungsanlage mit PCM-Codierung

Also Published As

Publication number Publication date
GB2025734B (en) 1982-11-24
IN150914B (pt) 1983-01-15
ZA793580B (en) 1980-06-25
AU4893179A (en) 1980-01-24
US4292561A (en) 1981-09-29
EP0007436A1 (de) 1980-02-06
AR216604A1 (es) 1979-12-28
GB2025734A (en) 1980-01-23
AU524112B2 (en) 1982-09-02
JPS5514800A (en) 1980-02-01
JPS596119B2 (ja) 1984-02-09
EP0007436B1 (de) 1982-10-13
DE2831411C2 (de) 1983-10-06
ATE1659T1 (de) 1982-10-15
DE2831411A1 (de) 1980-01-31

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