JPS60126950A - 拡声電話装置 - Google Patents

拡声電話装置

Info

Publication number
JPS60126950A
JPS60126950A JP23349183A JP23349183A JPS60126950A JP S60126950 A JPS60126950 A JP S60126950A JP 23349183 A JP23349183 A JP 23349183A JP 23349183 A JP23349183 A JP 23349183A JP S60126950 A JPS60126950 A JP S60126950A
Authority
JP
Japan
Prior art keywords
loss
circuit
transmission
reception
receiving
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
JP23349183A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0480580B2 (enrdf_load_stackoverflow
Inventor
Masayuki Tsurusaki
鶴崎　正幸
Taiji Sato
泰治 佐藤
Takeshi Horiuchi
堀内　猛志
Shinichi Shibata
柴田　慎一
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
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 filed Critical Toshiba Corp
Priority to JP23349183A priority Critical patent/JPS60126950A/ja
Publication of JPS60126950A publication Critical patent/JPS60126950A/ja
Publication of JPH0480580B2 publication Critical patent/JPH0480580B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP23349183A 1983-12-13 1983-12-13 拡声電話装置 Granted JPS60126950A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23349183A JPS60126950A (ja) 1983-12-13 1983-12-13 拡声電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23349183A JPS60126950A (ja) 1983-12-13 1983-12-13 拡声電話装置

Publications (2)

Publication Number Publication Date
JPS60126950A true JPS60126950A (ja) 1985-07-06
JPH0480580B2 JPH0480580B2 (enrdf_load_stackoverflow) 1992-12-18

Family

ID=16955840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23349183A Granted JPS60126950A (ja) 1983-12-13 1983-12-13 拡声電話装置

Country Status (1)

Country Link
JP (1) JPS60126950A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6339249A (ja) * 1986-08-05 1988-02-19 Nec Corp 周囲騒音感応型電話機
JPH0263355A (ja) * 1988-08-30 1990-03-02 Toshiba Corp 電話装置
JPH02164164A (ja) * 1988-12-19 1990-06-25 Toshiba Corp 拡声電話装置
JPH02260856A (ja) * 1988-12-28 1990-10-23 American Teleph & Telegr Co <Att> 音声信号処理方法
JPH02264548A (ja) * 1988-12-28 1990-10-29 American Teleph & Telegr Co <Att> 音響環境の型の確認方法
DE19535788C2 (de) * 1995-09-26 2003-04-17 Hermetik Hydraulik Ab Taeby Verfahren zum Kaltentzundern
JP2005347875A (ja) * 2004-05-31 2005-12-15 Matsushita Electric Works Ltd 拡声通話装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977710A (ja) * 1982-10-02 1984-05-04 Fujitsu Ltd マイクロホン増巾回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977710A (ja) * 1982-10-02 1984-05-04 Fujitsu Ltd マイクロホン増巾回路

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6339249A (ja) * 1986-08-05 1988-02-19 Nec Corp 周囲騒音感応型電話機
JPH0263355A (ja) * 1988-08-30 1990-03-02 Toshiba Corp 電話装置
JPH02164164A (ja) * 1988-12-19 1990-06-25 Toshiba Corp 拡声電話装置
JPH02260856A (ja) * 1988-12-28 1990-10-23 American Teleph & Telegr Co <Att> 音声信号処理方法
JPH02264548A (ja) * 1988-12-28 1990-10-29 American Teleph & Telegr Co <Att> 音響環境の型の確認方法
DE19535788C2 (de) * 1995-09-26 2003-04-17 Hermetik Hydraulik Ab Taeby Verfahren zum Kaltentzundern
JP2005347875A (ja) * 2004-05-31 2005-12-15 Matsushita Electric Works Ltd 拡声通話装置

Also Published As

Publication number Publication date
JPH0480580B2 (enrdf_load_stackoverflow) 1992-12-18

Similar Documents

Publication Publication Date Title
US6535604B1 (en) Voice-switching device and method for multiple receivers
US4764954A (en) Automatic gain control in a loudspeaker telephone set
JPS60126950A (ja) 拡声電話装置
JPS61195054A (ja) 拡声電話機の音声スイツチ回路
JPS59230356A (ja) ハンドフリ−通話装置
JPS5894257A (ja) 音声スイツチ回路
JP2594055B2 (ja) 音声スイッチ装置
JPS60182250A (ja) 拡声電話装置の音声スイツチ回路
JP2746963B2 (ja) 拡声電話装置
JP2839509B2 (ja) 電話装置
JPH02134051A (ja) 拡声電話装置
JP2636897B2 (ja) ハンドフリー通話回路
JP3213487B2 (ja) 通話システム
JPS61260752A (ja) 会議通話装置の音響廻り込み信号抑圧回路
JPS62278859A (ja) 電話機
KR920002783B1 (ko) 스피커폰의 신호분리기 및 투웨이 통신방법
JPS63272254A (ja) 電話装置
JP2525623B2 (ja) 電話機装置
JPS6179347A (ja) 拡声電話装置
JPS6271362A (ja) 送受話切換回路
JPS62151061A (ja) 拡声電話装置
JPH05292168A (ja) 電話装置
JPH037451A (ja) 拡声電話機
JPS6379450A (ja) 電話機
JPS61284150A (ja) 拡声電話機