JPS6167357A - ハンドフリ−電話装置 - Google Patents

ハンドフリ−電話装置

Info

Publication number
JPS6167357A
JPS6167357A JP18991684A JP18991684A JPS6167357A JP S6167357 A JPS6167357 A JP S6167357A JP 18991684 A JP18991684 A JP 18991684A JP 18991684 A JP18991684 A JP 18991684A JP S6167357 A JPS6167357 A JP S6167357A
Authority
JP
Japan
Prior art keywords
level
output
noise
voice
signal
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
JP18991684A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0262068B2 (en]
Inventor
Kenzaburo Nakajima
中島　健三郎
Shinichi Sekiguchi
慎一 関口
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 JP18991684A priority Critical patent/JPS6167357A/ja
Publication of JPS6167357A publication Critical patent/JPS6167357A/ja
Publication of JPH0262068B2 publication Critical patent/JPH0262068B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP18991684A 1984-09-11 1984-09-11 ハンドフリ−電話装置 Granted JPS6167357A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18991684A JPS6167357A (ja) 1984-09-11 1984-09-11 ハンドフリ−電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18991684A JPS6167357A (ja) 1984-09-11 1984-09-11 ハンドフリ−電話装置

Publications (2)

Publication Number Publication Date
JPS6167357A true JPS6167357A (ja) 1986-04-07
JPH0262068B2 JPH0262068B2 (en]) 1990-12-21

Family

ID=16249351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18991684A Granted JPS6167357A (ja) 1984-09-11 1984-09-11 ハンドフリ−電話装置

Country Status (1)

Country Link
JP (1) JPS6167357A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559880A (en) * 1993-01-19 1996-09-24 Mitsubishi Denki Kabushiki Kaisha Circuit for hands free talking

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152262A (en) * 1981-03-13 1982-09-20 Nec Corp Audio switch circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152262A (en) * 1981-03-13 1982-09-20 Nec Corp Audio switch circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559880A (en) * 1993-01-19 1996-09-24 Mitsubishi Denki Kabushiki Kaisha Circuit for hands free talking

Also Published As

Publication number Publication date
JPH0262068B2 (en]) 1990-12-21

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term