JPS5742296A - Microphone - Google Patents

Microphone

Info

Publication number
JPS5742296A
JPS5742296A JP11753880A JP11753880A JPS5742296A JP S5742296 A JPS5742296 A JP S5742296A JP 11753880 A JP11753880 A JP 11753880A JP 11753880 A JP11753880 A JP 11753880A JP S5742296 A JPS5742296 A JP S5742296A
Authority
JP
Japan
Prior art keywords
units
output
microphone
subtractor
adder
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
JP11753880A
Other languages
Japanese (ja)
Other versions
JPS6352520B2 (en
Inventor
Hiroyuki Naono
Michio Matsumoto
Katsunori Fujimura
Isanaga Yasuno
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 JP11753880A priority Critical patent/JPS5742296A/en
Publication of JPS5742296A publication Critical patent/JPS5742296A/en
Publication of JPS6352520B2 publication Critical patent/JPS6352520B2/ja
Granted 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

Abstract

PURPOSE:To collect the sound effectively to one portion for the sounds around the surroundings with a simple constitution, by combining the outputs of the 1st and 2nd microphone units with unidirectionality toward opposite direction with each other and that of a microphone unit with bidirectionality toward 90 deg. to the units. CONSTITUTION:Unidirectional microphone units 1, 2 opposite with each other are located and a bidirectional microphone unit 3 with different direction by 90 deg. to the direction of the units 1, 2 is located. The output of the units 1-3 is applied to potentiometers 7-9 interlocked with impedance covertors 4-6 to adjust the level. The output of the units 1, 3 is added at an adder 10, the output of the units 2, 3 is added at an adder 11, and the output of the units 1, 3 is subtracted at a subtractor 12. The output of the units 2, 3 is subtracted at a subtractor 13 to output outputs 14-17 and to collect sound at the surrounding effectively to the central position to be collected.
JP11753880A 1980-08-26 1980-08-26 Microphone Granted JPS5742296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11753880A JPS5742296A (en) 1980-08-26 1980-08-26 Microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11753880A JPS5742296A (en) 1980-08-26 1980-08-26 Microphone

Publications (2)

Publication Number Publication Date
JPS5742296A true JPS5742296A (en) 1982-03-09
JPS6352520B2 JPS6352520B2 (en) 1988-10-19

Family

ID=14714268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11753880A Granted JPS5742296A (en) 1980-08-26 1980-08-26 Microphone

Country Status (1)

Country Link
JP (1) JPS5742296A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145785U (en) * 1984-03-09 1985-09-27 日本ビクター株式会社 stereo microphone
US4622440A (en) * 1984-04-11 1986-11-11 In Tech Systems Corp. Differential hearing aid with programmable frequency response
JPS62119092U (en) * 1986-01-21 1987-07-28
JPH01238399A (en) * 1988-03-18 1989-09-22 Nippon Telegr & Teleph Corp <Ntt> Stereo sound collecting system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145785U (en) * 1984-03-09 1985-09-27 日本ビクター株式会社 stereo microphone
US4622440A (en) * 1984-04-11 1986-11-11 In Tech Systems Corp. Differential hearing aid with programmable frequency response
JPS62119092U (en) * 1986-01-21 1987-07-28
JPH01238399A (en) * 1988-03-18 1989-09-22 Nippon Telegr & Teleph Corp <Ntt> Stereo sound collecting system

Also Published As

Publication number Publication date
JPS6352520B2 (en) 1988-10-19

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