JPS5216949A - Discriminating circuit in speaker telephone set, etc. - Google Patents

Discriminating circuit in speaker telephone set, etc.

Info

Publication number
JPS5216949A
JPS5216949A JP9362775A JP9362775A JPS5216949A JP S5216949 A JPS5216949 A JP S5216949A JP 9362775 A JP9362775 A JP 9362775A JP 9362775 A JP9362775 A JP 9362775A JP S5216949 A JPS5216949 A JP S5216949A
Authority
JP
Japan
Prior art keywords
discriminating circuit
telephone set
speaker telephone
speaker
discriminating
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
JP9362775A
Other languages
Japanese (ja)
Other versions
JPS5635385B2 (en
Inventor
Hideyuki Nagashima
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP9362775A priority Critical patent/JPS5216949A/en
Publication of JPS5216949A publication Critical patent/JPS5216949A/en
Publication of JPS5635385B2 publication Critical patent/JPS5635385B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To provide a discriminating circuit which is able to discriminate noise signals and voice signals.
JP9362775A 1975-07-30 1975-07-30 Discriminating circuit in speaker telephone set, etc. Granted JPS5216949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9362775A JPS5216949A (en) 1975-07-30 1975-07-30 Discriminating circuit in speaker telephone set, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9362775A JPS5216949A (en) 1975-07-30 1975-07-30 Discriminating circuit in speaker telephone set, etc.

Publications (2)

Publication Number Publication Date
JPS5216949A true JPS5216949A (en) 1977-02-08
JPS5635385B2 JPS5635385B2 (en) 1981-08-17

Family

ID=14087553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9362775A Granted JPS5216949A (en) 1975-07-30 1975-07-30 Discriminating circuit in speaker telephone set, etc.

Country Status (1)

Country Link
JP (1) JPS5216949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016752A (en) * 1984-06-08 1985-01-28 Matsushita Electric Ind Co Ltd Loudspeaker telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016752A (en) * 1984-06-08 1985-01-28 Matsushita Electric Ind Co Ltd Loudspeaker telephone set

Also Published As

Publication number Publication date
JPS5635385B2 (en) 1981-08-17

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