JPS6217424B2 - - Google Patents

Info

Publication number
JPS6217424B2
JPS6217424B2 JP53140342A JP14034278A JPS6217424B2 JP S6217424 B2 JPS6217424 B2 JP S6217424B2 JP 53140342 A JP53140342 A JP 53140342A JP 14034278 A JP14034278 A JP 14034278A JP S6217424 B2 JPS6217424 B2 JP S6217424B2
Authority
JP
Japan
Prior art keywords
microphone
signal
speaker
hands
free telephone
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
Application number
JP53140342A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5567267A (en
Inventor
Hisashi Fujisaki
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP14034278A priority Critical patent/JPS5567267A/ja
Publication of JPS5567267A publication Critical patent/JPS5567267A/ja
Publication of JPS6217424B2 publication Critical patent/JPS6217424B2/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)
JP14034278A 1978-11-14 1978-11-14 Hand-free telephone set Granted JPS5567267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14034278A JPS5567267A (en) 1978-11-14 1978-11-14 Hand-free telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14034278A JPS5567267A (en) 1978-11-14 1978-11-14 Hand-free telephone set

Publications (2)

Publication Number Publication Date
JPS5567267A JPS5567267A (en) 1980-05-21
JPS6217424B2 true JPS6217424B2 (enrdf_load_stackoverflow) 1987-04-17

Family

ID=15266591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14034278A Granted JPS5567267A (en) 1978-11-14 1978-11-14 Hand-free telephone set

Country Status (1)

Country Link
JP (1) JPS5567267A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156184A (en) * 1984-03-21 1985-10-02 Philips Electronic Associated Loudspeaking telephone instrument

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4990007A (enrdf_load_stackoverflow) * 1972-12-27 1974-08-28

Also Published As

Publication number Publication date
JPS5567267A (en) 1980-05-21

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