JPS5652993A - Microphone - Google Patents

Microphone

Info

Publication number
JPS5652993A
JPS5652993A JP12925679A JP12925679A JPS5652993A JP S5652993 A JPS5652993 A JP S5652993A JP 12925679 A JP12925679 A JP 12925679A JP 12925679 A JP12925679 A JP 12925679A JP S5652993 A JPS5652993 A JP S5652993A
Authority
JP
Japan
Prior art keywords
yoke
shaft hole
microphone
unit
supporting lever
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.)
Pending
Application number
JP12925679A
Other languages
Japanese (ja)
Inventor
Nobuyuki Murata
Masao Fujihira
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
Priority to JP12925679A priority Critical patent/JPS5652993A/en
Publication of JPS5652993A publication Critical patent/JPS5652993A/en
Pending legal-status Critical Current

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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To prevent not only unnecessary vibration but also electromotive reproduction of a noise, by filling an air gap made between a microphone unit and its supporting body, with a magnetic fluid, and supporting the microphone unit and the microphone casing in a floating state by said method. CONSTITUTION:The microphone unit supporting lever 12 is inserted into the shaft hole 18 of the yoke 19 from the shaft hole 16 of the yoke 17, the stopper yoke 21 is fitted to the protruding end from this shaft hole 18, and a magnetic circuit is formed, by which the magnetic field is transmitted to the yoke 17, the unit supporting lever 12, the stopper yoke 21 and the yoke 19 in due order. And the gap (a) formed by the end of the microphone unit 11, the unit supporting lever 12 and the shaft hole 16 of the yoke 17, and the gap (b) formed by the unit supporting lever 12, the shaft hole 18 of the yoke 19, and the stopper yoke 21 are filled with the magnetic fluids 22, 23. The microphone unit 11 is supported in a state that it is floating from the microphone casing 14 by utilizing said magnetic fluids 22, 23 as loss materials. In this regard, the space part formed by the magnet 15 and the yokes 17, 19 operates as a sound cavity (c) through the unit supporting lever having the air pit 13.
JP12925679A 1979-10-05 1979-10-05 Microphone Pending JPS5652993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12925679A JPS5652993A (en) 1979-10-05 1979-10-05 Microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12925679A JPS5652993A (en) 1979-10-05 1979-10-05 Microphone

Publications (1)

Publication Number Publication Date
JPS5652993A true JPS5652993A (en) 1981-05-12

Family

ID=15005062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12925679A Pending JPS5652993A (en) 1979-10-05 1979-10-05 Microphone

Country Status (1)

Country Link
JP (1) JPS5652993A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975966A (en) * 1989-08-24 1990-12-04 Bose Corporation Reducing microphone puff noise
US6560345B1 (en) 2000-02-29 2003-05-06 Yasuhiro Hachisuka Microphone
JP2007214840A (en) * 2006-02-09 2007-08-23 Matsushita Electric Ind Co Ltd Microphone device
CN104301817A (en) * 2014-10-17 2015-01-21 刘洋 Novel loudspeaker box with microphone function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975966A (en) * 1989-08-24 1990-12-04 Bose Corporation Reducing microphone puff noise
US6560345B1 (en) 2000-02-29 2003-05-06 Yasuhiro Hachisuka Microphone
JP2007214840A (en) * 2006-02-09 2007-08-23 Matsushita Electric Ind Co Ltd Microphone device
CN104301817A (en) * 2014-10-17 2015-01-21 刘洋 Novel loudspeaker box with microphone function

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