JPS57107693A - Microphone device - Google Patents

Microphone device

Info

Publication number
JPS57107693A
JPS57107693A JP18365480A JP18365480A JPS57107693A JP S57107693 A JPS57107693 A JP S57107693A JP 18365480 A JP18365480 A JP 18365480A JP 18365480 A JP18365480 A JP 18365480A JP S57107693 A JPS57107693 A JP S57107693A
Authority
JP
Japan
Prior art keywords
circuit
winding
constitution
mix21
resistor
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
JP18365480A
Other languages
Japanese (ja)
Inventor
Hiroto Wada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP18365480A priority Critical patent/JPS57107693A/en
Publication of JPS57107693A publication Critical patent/JPS57107693A/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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To increase dynamic range characteristics and to simplify and make small the circuit constitution, by saving the electric power supply for phase shift circuit and mixing circuit and the like. CONSTITUTION:Unidirectional microphone units M21, M22 are located serially with a specified interval toward a sound source S. An output terminal of the M21 is commonly connected to each one end of a resistor R11 and a capacitor C11 constituting a phase shift circuit PS21. Another end of the resistor R11 and the capacitor C11 is connected to both ends of a winding N1 at the primary side of a transformer T11 constituting a mixing circuit MIX21. The output terminal of the M22 is connected to one end of a winding N2 at the primary of the T11, and another end of the winding N2 is grounded commonly to the neutral point of the N1. An equalizer circuit EQ21 is connected to a secondary winding N3 of the T11. In this circuit constitution, the T11 plays a role of a part of the PS21 and the MIX21 substantially.
JP18365480A 1980-12-24 1980-12-24 Microphone device Pending JPS57107693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18365480A JPS57107693A (en) 1980-12-24 1980-12-24 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18365480A JPS57107693A (en) 1980-12-24 1980-12-24 Microphone device

Publications (1)

Publication Number Publication Date
JPS57107693A true JPS57107693A (en) 1982-07-05

Family

ID=16139580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18365480A Pending JPS57107693A (en) 1980-12-24 1980-12-24 Microphone device

Country Status (1)

Country Link
JP (1) JPS57107693A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741527B1 (en) * 2006-08-01 2007-07-25 윤창식 A bicycle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741527B1 (en) * 2006-08-01 2007-07-25 윤창식 A bicycle

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