CA1128644A - Capacitor microphone - Google Patents

Capacitor microphone

Info

Publication number
CA1128644A
CA1128644A CA347,263A CA347263A CA1128644A CA 1128644 A CA1128644 A CA 1128644A CA 347263 A CA347263 A CA 347263A CA 1128644 A CA1128644 A CA 1128644A
Authority
CA
Canada
Prior art keywords
back plate
diaphragm
electret
capacitor microphone
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
CA347,263A
Other languages
English (en)
French (fr)
Inventor
Tsutomu Imai
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of CA1128644A publication Critical patent/CA1128644A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
CA347,263A 1979-03-08 1980-03-07 Capacitor microphone Expired CA1128644A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP27109/79 1979-03-08
JP2710979A JPS55120300A (en) 1979-03-08 1979-03-08 Two-way electrostatic microphone

Publications (1)

Publication Number Publication Date
CA1128644A true CA1128644A (en) 1982-07-27

Family

ID=12211904

Family Applications (1)

Application Number Title Priority Date Filing Date
CA347,263A Expired CA1128644A (en) 1979-03-08 1980-03-07 Capacitor microphone

Country Status (7)

Country Link
US (1) US4329547A (enExample)
JP (1) JPS55120300A (enExample)
CA (1) CA1128644A (enExample)
DE (1) DE3008638A1 (enExample)
FR (1) FR2451119A1 (enExample)
GB (1) GB2044583B (enExample)
NL (1) NL8001332A (enExample)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251264A (en) * 1992-03-25 1993-10-05 Motorola, Inc. Mechanical-vibration-cancelling piezo ceramic microphone
US20030123683A1 (en) * 2000-03-07 2003-07-03 George Raicevich Double-capacitor microphone
AU2001240323B2 (en) * 2000-03-07 2005-07-28 Hearworks Pty Ltd A layered microphone structure
US7035167B2 (en) * 2003-09-11 2006-04-25 General Phosphorix Seismic sensor
US7016262B2 (en) * 2003-09-11 2006-03-21 General Phosphorix, Llc Seismic sensor
US20060082158A1 (en) * 2004-10-15 2006-04-20 Schrader Jeffrey L Method and device for supplying power from acoustic energy
EP1821569A1 (en) * 2004-12-07 2007-08-22 NTT DoCoMo, Inc. Microphone device
JP5123843B2 (ja) * 2005-03-16 2013-01-23 コクス，ジェイムズ マイクロフォンアレイおよびデジタル信号処理システム
JP4403412B2 (ja) * 2005-04-22 2010-01-27 ソニー株式会社 マイクロホン
US7747032B2 (en) * 2005-05-09 2010-06-29 Knowles Electronics, Llc Conjoined receiver and microphone assembly
FI20055261A0 (fi) * 2005-05-27 2005-05-27 Midas Studios Avoin Yhtioe Akustisten muuttajien kokoonpano, järjestelmä ja menetelmä akustisten signaalien vastaanottamista tai toistamista varten
US7889882B2 (en) * 2006-12-20 2011-02-15 Leonard Marshall Selectable diaphragm condenser microphone
EP2220875A4 (en) * 2007-11-20 2013-10-30 Cochlear Ltd IMPLANTABLE ELECTRIC MICROPHONE
JP5237046B2 (ja) * 2008-10-21 2013-07-17 株式会社オーディオテクニカ 可変指向性マイクロホンユニットおよび可変指向性マイクロホン
US8855350B2 (en) * 2009-04-28 2014-10-07 Cochlear Limited Patterned implantable electret microphone
JP5541769B2 (ja) * 2009-09-15 2014-07-09 株式会社オーディオテクニカ ステレオマイクロホンユニット及びステレオマイクロホン
US9163853B2 (en) 2009-11-02 2015-10-20 Mitsubishi Electric Corporation Noise control system, and fan structure and outdoor unit of air-conditioning-apparatus each equipped therewith
EP2553944A4 (en) 2010-03-30 2016-03-23 Cochlear Ltd ELECTRIC MICROPHONE WITH LOW NOISE DEVELOPMENT
EP2432249A1 (en) * 2010-07-02 2012-03-21 Knowles Electronics Asia PTE. Ltd. Microphone
EP2692144B1 (en) 2011-03-30 2017-02-01 Kaetel Systems GmbH Loudspeaker
US9693135B2 (en) 2012-01-05 2017-06-27 Tdk Corporation Differential microphone and method for driving a differential microphone
US9179221B2 (en) * 2013-07-18 2015-11-03 Infineon Technologies Ag MEMS devices, interface circuits, and methods of making thereof
CN112334867B (zh) 2018-05-24 2025-11-11 纽约州立大学研究基金会 电容传感器
US11558695B2 (en) 2020-03-31 2023-01-17 Shure Acquisition Holdings, Inc. Condenser microphone pattern adjustment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28420E (en) 1967-05-15 1975-05-13 Blbctret acoustic transducer
DE2155026C3 (de) * 1971-11-05 1974-05-30 Sennheiser Electronic Dr.-Ing. Fritz Sennheiser, 3002 Wennebostel Schaltungsanordnung zur Schaltung eines Niederfrequenzkondensatormikrofons
US3980838A (en) * 1974-02-20 1976-09-14 Tokyo Shibaura Electric Co., Ltd. Plural electret electroacoustic transducer
CA1025994A (en) * 1975-07-08 1978-02-07 Uniroyal Ltd. Electromechanical transducer
US4041446A (en) * 1976-05-20 1977-08-09 The United States Of America As Represented By The Secretary Of The Navy Capacitive-type displacement and pressure sensitive transducer
DE2738978A1 (de) * 1977-08-30 1979-03-15 Neumann Gmbh Georg Schaltungsanordnungen fuer elektret- kondensator-mikrophone

Also Published As

Publication number Publication date
DE3008638A1 (de) 1980-09-11
JPS55120300A (en) 1980-09-16
FR2451119B1 (enExample) 1984-05-18
GB2044583A (en) 1980-10-15
NL8001332A (nl) 1980-09-10
GB2044583B (en) 1983-04-20
US4329547A (en) 1982-05-11
FR2451119A1 (fr) 1980-10-03
JPS6150560B2 (enExample) 1986-11-05

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Legal Events

Date Code Title Description
MKEX Expiry