JPS6451797A - Noise excluding microphone equipment - Google Patents

Noise excluding microphone equipment

Info

Publication number
JPS6451797A
JPS6451797A JP20818387A JP20818387A JPS6451797A JP S6451797 A JPS6451797 A JP S6451797A JP 20818387 A JP20818387 A JP 20818387A JP 20818387 A JP20818387 A JP 20818387A JP S6451797 A JPS6451797 A JP S6451797A
Authority
JP
Japan
Prior art keywords
microphone
case
noise
microphone equipment
distance
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
JP20818387A
Other languages
Japanese (ja)
Inventor
Nobumichi Sato
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP20818387A priority Critical patent/JPS6451797A/en
Publication of JPS6451797A publication Critical patent/JPS6451797A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To transmit only a desired sound without picking up a noise even in the case of use amid the noise by installing a first microphone and a second microphone side by side at a specified distance from a microphone case. CONSTITUTION:The first microphone M1 and the second microphone M2 are installed side by side in the microphone case 1. The distance from the microphone M1 to the front surface of the case 1 is made smaller than the distance from the microphone M2 to the front surface of the case 1. The sound, incident from the side of the case 1, is inputted to the two microphones M1, M2, but does not appear at an output terminal 9 because of being canceled by each other. Thus, even if it is used amid the noise, it does not pick up the noise, and only the desired sound is transmitted.
JP20818387A 1987-08-24 1987-08-24 Noise excluding microphone equipment Pending JPS6451797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20818387A JPS6451797A (en) 1987-08-24 1987-08-24 Noise excluding microphone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20818387A JPS6451797A (en) 1987-08-24 1987-08-24 Noise excluding microphone equipment

Publications (1)

Publication Number Publication Date
JPS6451797A true JPS6451797A (en) 1989-02-28

Family

ID=16552038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20818387A Pending JPS6451797A (en) 1987-08-24 1987-08-24 Noise excluding microphone equipment

Country Status (1)

Country Link
JP (1) JPS6451797A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0167900U (en) * 1987-10-23 1989-05-01
JPH0186391U (en) * 1987-11-27 1989-06-07
JP2008005439A (en) * 2006-06-26 2008-01-10 Yamaha Corp Balanced output microphone, and method of manufacturing balanced output microphone
WO2009142250A1 (en) * 2008-05-20 2009-11-26 株式会社船井電機新応用技術研究所 Integrated circuit device, sound inputting device and information processing system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516528A (en) * 1974-07-04 1976-01-20 Sony Corp MAIKURO FUON
JPS62110349A (en) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd Transmitter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516528A (en) * 1974-07-04 1976-01-20 Sony Corp MAIKURO FUON
JPS62110349A (en) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd Transmitter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0167900U (en) * 1987-10-23 1989-05-01
JPH0186391U (en) * 1987-11-27 1989-06-07
JP2008005439A (en) * 2006-06-26 2008-01-10 Yamaha Corp Balanced output microphone, and method of manufacturing balanced output microphone
WO2009142250A1 (en) * 2008-05-20 2009-11-26 株式会社船井電機新応用技術研究所 Integrated circuit device, sound inputting device and information processing system
US8824698B2 (en) 2008-05-20 2014-09-02 Funai Electric Advanced Applied Technology Research Institute Inc. Integrated circuit device, voice input device and information processing system

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