JPS5330803A - Voice communication system - Google Patents

Voice communication system

Info

Publication number
JPS5330803A
JPS5330803A JP10502276A JP10502276A JPS5330803A JP S5330803 A JPS5330803 A JP S5330803A JP 10502276 A JP10502276 A JP 10502276A JP 10502276 A JP10502276 A JP 10502276A JP S5330803 A JPS5330803 A JP S5330803A
Authority
JP
Japan
Prior art keywords
communication system
voice communication
microphones
couples
arraged
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
JP10502276A
Other languages
Japanese (ja)
Inventor
Hideto Kakihara
Nobuhiko Uryu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10502276A priority Critical patent/JPS5330803A/en
Publication of JPS5330803A publication Critical patent/JPS5330803A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/20—Arrangements for preventing acoustic feed-back

Abstract

PURPOSE:Two couples of microphones are arraged being acoustically symmetrized and the outputs of two couples of microphones are made cancel, thereby preventing a speaker from howling.
JP10502276A 1976-09-03 1976-09-03 Voice communication system Pending JPS5330803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10502276A JPS5330803A (en) 1976-09-03 1976-09-03 Voice communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10502276A JPS5330803A (en) 1976-09-03 1976-09-03 Voice communication system

Publications (1)

Publication Number Publication Date
JPS5330803A true JPS5330803A (en) 1978-03-23

Family

ID=14396420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10502276A Pending JPS5330803A (en) 1976-09-03 1976-09-03 Voice communication system

Country Status (1)

Country Link
JP (1) JPS5330803A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6223898U (en) * 1985-07-30 1987-02-13
JPS62194798U (en) * 1986-06-03 1987-12-11
JPS63299435A (en) * 1987-05-28 1988-12-06 Nec Corp Preventing system for ringing and ambient noise
JP2006025351A (en) * 2004-07-09 2006-01-26 Yamaha Corp Acoustic apparatus and teleconferencing system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6223898U (en) * 1985-07-30 1987-02-13
JPS62194798U (en) * 1986-06-03 1987-12-11
JPH0235840Y2 (en) * 1986-06-03 1990-09-28
JPS63299435A (en) * 1987-05-28 1988-12-06 Nec Corp Preventing system for ringing and ambient noise
JPH0529184B2 (en) * 1987-05-28 1993-04-28 Nippon Electric Co
JP2006025351A (en) * 2004-07-09 2006-01-26 Yamaha Corp Acoustic apparatus and teleconferencing system
JP4501563B2 (en) * 2004-07-09 2010-07-14 ヤマハ株式会社 Audio apparatus and remote conference system

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