JPS6239600B2 - - Google Patents

Info

Publication number
JPS6239600B2
JPS6239600B2 JP2834780A JP2834780A JPS6239600B2 JP S6239600 B2 JPS6239600 B2 JP S6239600B2 JP 2834780 A JP2834780 A JP 2834780A JP 2834780 A JP2834780 A JP 2834780A JP S6239600 B2 JPS6239600 B2 JP S6239600B2
Authority
JP
Japan
Prior art keywords
polymer film
electrode plate
film
polarizing
polarization
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
JP2834780A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56125200A (en
Inventor
Junichi Tamamura
Yoshuki Murakami
Akira Terada
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.)
HOSHIDENKI SEIZO KK
Original Assignee
HOSHIDENKI SEIZO KK
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 HOSHIDENKI SEIZO KK filed Critical HOSHIDENKI SEIZO KK
Priority to JP2834780A priority Critical patent/JPS56125200A/ja
Publication of JPS56125200A publication Critical patent/JPS56125200A/ja
Publication of JPS6239600B2 publication Critical patent/JPS6239600B2/ja
Granted 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
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP2834780A 1980-03-06 1980-03-06 Electrode plate electret for electrostatic type electro-acoustic converter Granted JPS56125200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2834780A JPS56125200A (en) 1980-03-06 1980-03-06 Electrode plate electret for electrostatic type electro-acoustic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2834780A JPS56125200A (en) 1980-03-06 1980-03-06 Electrode plate electret for electrostatic type electro-acoustic converter

Publications (2)

Publication Number Publication Date
JPS56125200A JPS56125200A (en) 1981-10-01
JPS6239600B2 true JPS6239600B2 (cs) 1987-08-24

Family

ID=12246062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2834780A Granted JPS56125200A (en) 1980-03-06 1980-03-06 Electrode plate electret for electrostatic type electro-acoustic converter

Country Status (1)

Country Link
JP (1) JPS56125200A (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4697763B2 (ja) * 2001-07-31 2011-06-08 パナソニック株式会社 コンデンサマイクロホン
JP4746291B2 (ja) * 2004-08-05 2011-08-10 オリンパス株式会社 静電容量型超音波振動子、及びその製造方法
JP4729290B2 (ja) * 2004-11-15 2011-07-20 株式会社オーディオテクニカ エレクトレットコンデンサマイクロホンユニットの製造方法
JP4877780B2 (ja) * 2006-11-17 2012-02-15 株式会社オーディオテクニカ エレクトレットコンデンサマイクロホンユニットおよびエレクトレットコンデンサマイクロホン
JP5729280B2 (ja) * 2011-11-30 2015-06-03 ヤマハ株式会社 静電型スピーカ

Also Published As

Publication number Publication date
JPS56125200A (en) 1981-10-01

Similar Documents

Publication Publication Date Title
US3942029A (en) Electrostatic transducer
US3924324A (en) Method of making electret
JP6005093B2 (ja) 電気音響変換フィルム、電気音響変換器、フレキシブルディスプレイおよびプロジェクター用スクリーン
US3118022A (en) Electroacoustic transducer
US3947644A (en) Piezoelectric-type electroacoustic transducer
US3705312A (en) Preparation of electret transducer elements by application of controlled breakdown electric field
US5101543A (en) Method of making a variable capacitor microphone
US4014091A (en) Method and apparatus for an electret transducer
US4302633A (en) Electrode plate electret of electro-acoustic transducer and its manufacturing method
WO2016158518A1 (ja) 電気音響変換器
US4042438A (en) Method of assembling a diaphragm assembly for an electro-acoustic transducer
EP0262145A4 (en) Piezoelectric polymeric film balloon speaker
CN110572746B (zh) 一种用于发声装置的导电膜以及发声装置
US3894333A (en) Electromechanical transducer and method of making same
JP6505845B2 (ja) 電気音響変換フィルム
JPS6239600B2 (cs)
CN101656906A (zh) 扬声器单体结构
CN101729972B (zh) 扬声器的制造方法
US3821491A (en) Microphone construction
JPWO2017030045A1 (ja) 電気音響変換フィルム、電気音響変換フィルムの製造方法および電気音響変換器
JP2681207B2 (ja) 静電型電気音響変換器の振動板
CN101754078A (zh) 驻极体背极式双振膜电声致动器及其制法
KR20010108129A (ko) 합성 전해 스피커 어셈블리
US2922851A (en) Loudspeakers
JPS60157399A (ja) コンデンサマイクロホン