JPH0242266B2 - - Google Patents

Info

Publication number
JPH0242266B2
JPH0242266B2 JP59189912A JP18991284A JPH0242266B2 JP H0242266 B2 JPH0242266 B2 JP H0242266B2 JP 59189912 A JP59189912 A JP 59189912A JP 18991284 A JP18991284 A JP 18991284A JP H0242266 B2 JPH0242266 B2 JP H0242266B2
Authority
JP
Japan
Prior art keywords
circuit
transmitting
receiving
loudspeaker
handset
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.)
Expired - Lifetime
Application number
JP59189912A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6167356A (ja
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 filed Critical
Priority to JP59189912A priority Critical patent/JPS6167356A/ja
Publication of JPS6167356A publication Critical patent/JPS6167356A/ja
Publication of JPH0242266B2 publication Critical patent/JPH0242266B2/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)
JP59189912A 1984-09-11 1984-09-11 拡声電話装置 Granted JPS6167356A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59189912A JPS6167356A (ja) 1984-09-11 1984-09-11 拡声電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59189912A JPS6167356A (ja) 1984-09-11 1984-09-11 拡声電話装置

Publications (2)

Publication Number Publication Date
JPS6167356A JPS6167356A (ja) 1986-04-07
JPH0242266B2 true JPH0242266B2 (enrdf_load_stackoverflow) 1990-09-21

Family

ID=16249287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59189912A Granted JPS6167356A (ja) 1984-09-11 1984-09-11 拡声電話装置

Country Status (1)

Country Link
JP (1) JPS6167356A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6167356A (ja) 1986-04-07

Similar Documents

Publication Publication Date Title
JP2842607B2 (ja) エコーキャンセラ、それを備えた通信装置および信号処理方法
US5099472A (en) Hands free telecommunication apparatus and method
US5692042A (en) Speakerphone controlled by a comparator with hysteresis
US5790657A (en) Echo suppressor capable of suppressing an echo resulting from acoustic coupling without spoiling a natural sound of conversation
CA2207461C (en) Non-constant echo return loss for telephone terminal with handsfree
JPS63222557A (ja) 拡声電話機
JP4400490B2 (ja) 拡声通話装置、拡声通話システム
JPS60236556A (ja) 音声制御されるハンドフリ−電話装置用回路装置
JPS6038962A (ja) 会議用電話装置
JPH0242266B2 (enrdf_load_stackoverflow)
JPS61260752A (ja) 会議通話装置の音響廻り込み信号抑圧回路
JP2636897B2 (ja) ハンドフリー通話回路
JPS6218836A (ja) ハウリング抑圧回路
JPS63272254A (ja) 電話装置
JPS6038958A (ja) 拡声電話装置
JPH11284550A (ja) 音声入出力装置
JPH07240703A (ja) 通話障害防止装置
JPS6085664A (ja) 会議電話装置
KR0121115Y1 (ko) 전화기의 송수화회로
JP2580697Y2 (ja) インターホン装置
JPS61172471A (ja) 会議通話用拡声電話機の廻り込み防止方式
JPH10336283A (ja) 電話機
JPH01305753A (ja) 電話機
JPS6352830B2 (enrdf_load_stackoverflow)
JPS5862957A (ja) 内線ハンドフリ−応答回路