JPS623549A - ハウリング防止回路 - Google Patents

ハウリング防止回路

Info

Publication number
JPS623549A
JPS623549A JP14352485A JP14352485A JPS623549A JP S623549 A JPS623549 A JP S623549A JP 14352485 A JP14352485 A JP 14352485A JP 14352485 A JP14352485 A JP 14352485A JP S623549 A JPS623549 A JP S623549A
Authority
JP
Japan
Prior art keywords
howling
circuit
talking
region
microphone
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
JP14352485A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0511456B2 (cg-RX-API-DMAC7.html
Inventor
Keiichi Maeda
前田　恵一
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP14352485A priority Critical patent/JPS623549A/ja
Publication of JPS623549A publication Critical patent/JPS623549A/ja
Publication of JPH0511456B2 publication Critical patent/JPH0511456B2/ja
Granted legal-status Critical Current

Links

JP14352485A 1985-06-29 1985-06-29 ハウリング防止回路 Granted JPS623549A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14352485A JPS623549A (ja) 1985-06-29 1985-06-29 ハウリング防止回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14352485A JPS623549A (ja) 1985-06-29 1985-06-29 ハウリング防止回路

Publications (2)

Publication Number Publication Date
JPS623549A true JPS623549A (ja) 1987-01-09
JPH0511456B2 JPH0511456B2 (cg-RX-API-DMAC7.html) 1993-02-15

Family

ID=15340740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14352485A Granted JPS623549A (ja) 1985-06-29 1985-06-29 ハウリング防止回路

Country Status (1)

Country Link
JP (1) JPS623549A (cg-RX-API-DMAC7.html)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229964A (ja) * 1983-06-11 1984-12-24 Nippon Telegr & Teleph Corp <Ntt> 音声スイツチ回路
JPS6066560A (ja) * 1983-09-22 1985-04-16 Matsushita Electric Ind Co Ltd 音響結合防止回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229964A (ja) * 1983-06-11 1984-12-24 Nippon Telegr & Teleph Corp <Ntt> 音声スイツチ回路
JPS6066560A (ja) * 1983-09-22 1985-04-16 Matsushita Electric Ind Co Ltd 音響結合防止回路

Also Published As

Publication number Publication date
JPH0511456B2 (cg-RX-API-DMAC7.html) 1993-02-15

Similar Documents

Publication Publication Date Title
US5526405A (en) Cordless telephone apparatus with a speakerphone operation mode cordless
JP3617284B2 (ja) ２線式多局型インターホンシステム
JPH0773387B2 (ja) 携帯電話装置
US4346261A (en) Speaker phones
JPS623549A (ja) ハウリング防止回路
US4493950A (en) Loudspeaker telephone
JPS63187845A (ja) 無線電話装置
JPH01268242A (ja) 無線電話機
JPS63187844A (ja) 無線電話装置
KR100342489B1 (ko) 이동 무선 단말기에서 이어폰 마이크를 이용한 통화 장치 및 방법
JPH0357669B2 (cg-RX-API-DMAC7.html)
KR20010056429A (ko) 폴더형 이동통신 단말기
KR200259991Y1 (ko) 이동전화와 유선전화송수화기 연결 어댑터를 구비한이동전화기용 충전기
JPS6298950A (ja) 電子式電話機の側音制御回路
KR200259992Y1 (ko) 이동전화와 송수화기의 연결어댑터를 구비한 전화기
JPS6030297A (ja) 内線ハンドフリ−回路
JP2580697Y2 (ja) インターホン装置
JP2002261945A (ja) インターホン装置
JP2956346B2 (ja) 電話装置
JPH01253352A (ja) 拡声通話機
GB2218302A (en) Hands-free telephone
JPH02233092A (ja) 構内交換機
JPS59111425A (ja) 会議電話装置
JPH01128647A (ja) ハンドフリー電話装置
KR19990027214U (ko) 전화기