JPS55151897A - Microphone device - Google Patents

Microphone device

Info

Publication number
JPS55151897A
JPS55151897A JP6019779A JP6019779A JPS55151897A JP S55151897 A JPS55151897 A JP S55151897A JP 6019779 A JP6019779 A JP 6019779A JP 6019779 A JP6019779 A JP 6019779A JP S55151897 A JPS55151897 A JP S55151897A
Authority
JP
Japan
Prior art keywords
sound
outputs
units
unit
speed
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.)
Granted
Application number
JP6019779A
Other languages
Japanese (ja)
Other versions
JPS6022874B2 (en
Inventor
Hiroyuki Naono
Satoru Ibaraki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6019779A priority Critical patent/JPS6022874B2/en
Publication of JPS55151897A publication Critical patent/JPS55151897A/en
Publication of JPS6022874B2 publication Critical patent/JPS6022874B2/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; 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 collect the sounds of only desired directions, by obtaining the outputs of the microphone units featuring the equal sensitivity and arranged on a straight line through the high-speed and sequential switching by means of the change-over switch. CONSTITUTION:Plural units of microphone unit 4 featuring the equal sensitivity are attached to mike attachment plate 3 and arranged on straight line. One electrode of unit 4 is connected to each fixed contact 6 of change-over switch 5, and then mobile contact 7 is turned in a high speed. Thus the output of each unit 4 is obtained in sequence and through the high-speed switching. Here PA is defined in case the sound is applied vertically to the linear arrangement of units 4 along with PB defined when the sound is applied in parallel respectively. Now if the sound is applied from the direction of PA, the outputs of a'-i' of unit 4 are extracted sequentially with delay of each sampling time. On the other hand, if the sound is applied from the direction of PB, the outputs of a'-i' feature the same level at all times. Thus only the sounds arriving from the direction of PB can be collected by extracting the output when the coincidence is secured among the outputs of units 4 and at one sweep.
JP6019779A 1979-05-16 1979-05-16 microphone device Expired JPS6022874B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6019779A JPS6022874B2 (en) 1979-05-16 1979-05-16 microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6019779A JPS6022874B2 (en) 1979-05-16 1979-05-16 microphone device

Publications (2)

Publication Number Publication Date
JPS55151897A true JPS55151897A (en) 1980-11-26
JPS6022874B2 JPS6022874B2 (en) 1985-06-04

Family

ID=13135180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6019779A Expired JPS6022874B2 (en) 1979-05-16 1979-05-16 microphone device

Country Status (1)

Country Link
JP (1) JPS6022874B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0781070A1 (en) * 1995-12-22 1997-06-25 France Telecom Acoustic antenna for computer workstation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0781070A1 (en) * 1995-12-22 1997-06-25 France Telecom Acoustic antenna for computer workstation
FR2742960A1 (en) * 1995-12-22 1997-06-27 Mahieux Yannick ACOUSTIC ANTENNA FOR COMPUTER WORKSTATION
US5848170A (en) * 1995-12-22 1998-12-08 France Telecom Acoustic antenna for computer workstation

Also Published As

Publication number Publication date
JPS6022874B2 (en) 1985-06-04

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