JPS5737998A - Microphone device - Google Patents

Microphone device

Info

Publication number
JPS5737998A
JPS5737998A JP11117580A JP11117580A JPS5737998A JP S5737998 A JPS5737998 A JP S5737998A JP 11117580 A JP11117580 A JP 11117580A JP 11117580 A JP11117580 A JP 11117580A JP S5737998 A JPS5737998 A JP S5737998A
Authority
JP
Japan
Prior art keywords
optical fiber
signal
negative feedback
optical
amplifier
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
JP11117580A
Other languages
Japanese (ja)
Inventor
Yoshimoto Omura
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 JP11117580A priority Critical patent/JPS5737998A/en
Publication of JPS5737998A publication Critical patent/JPS5737998A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To suppress noises generated in a transmission system by using optical fiber for a transmission line and by providing negative feedback through the optical fiber. CONSTITUTION:At a transmission part 1, a signal from a microphone 11 is supplied through a preamplifier 12 to an amplifier 13, whose output is converted 14 into an optical signal. The optical signal is transmitted to a reception part 2 via the optical fiber 3a of a transmission line 3 to be converted 21 into an electric signal, which is led to an output terminal 22. This electric signal, after passing through a negative feedback amplifier 23, is further converted 24 into an optical signal, which is returned to the transmission part 1 through the optical fiber 3b. This optical signal is reconverted 15 into an electric signal, which is supplied to the amplifier 13 to provide negative feedback. Thus, the optical fiber is used for the transmission line and the negative feedback is provided to suppress noises generated in the transmission system.
JP11117580A 1980-08-13 1980-08-13 Microphone device Pending JPS5737998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11117580A JPS5737998A (en) 1980-08-13 1980-08-13 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11117580A JPS5737998A (en) 1980-08-13 1980-08-13 Microphone device

Publications (1)

Publication Number Publication Date
JPS5737998A true JPS5737998A (en) 1982-03-02

Family

ID=14554379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11117580A Pending JPS5737998A (en) 1980-08-13 1980-08-13 Microphone device

Country Status (1)

Country Link
JP (1) JPS5737998A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161428A (en) * 1982-03-18 1983-09-26 Pioneer Electronic Corp Electronic equipment
JPS6458199A (en) * 1987-08-28 1989-03-06 Hitachi Plant Eng & Constr Co Multi-point electronic silence system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161428A (en) * 1982-03-18 1983-09-26 Pioneer Electronic Corp Electronic equipment
JPS6259495B2 (en) * 1982-03-18 1987-12-11 Pioneer Electronic Corp
JPS6458199A (en) * 1987-08-28 1989-03-06 Hitachi Plant Eng & Constr Co Multi-point electronic silence system

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