JPS53121550A - Automatic sound volume controller - Google Patents

Automatic sound volume controller

Info

Publication number
JPS53121550A
JPS53121550A JP3664677A JP3664677A JPS53121550A JP S53121550 A JPS53121550 A JP S53121550A JP 3664677 A JP3664677 A JP 3664677A JP 3664677 A JP3664677 A JP 3664677A JP S53121550 A JPS53121550 A JP S53121550A
Authority
JP
Japan
Prior art keywords
sound volume
volume controller
automatic sound
speaker
voice
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.)
Pending
Application number
JP3664677A
Other languages
Japanese (ja)
Inventor
Kuniaki Wakisawa
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3664677A priority Critical patent/JPS53121550A/en
Publication of JPS53121550A publication Critical patent/JPS53121550A/en
Pending 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
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To secure an automatic control of the volume given from the speaker with the isolated signal, by providing a circuit which detects and isolates the physical quantity related to the ground noise of the area where the voice is generated when the voice is produced through the speaker.
JP3664677A 1977-03-31 1977-03-31 Automatic sound volume controller Pending JPS53121550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3664677A JPS53121550A (en) 1977-03-31 1977-03-31 Automatic sound volume controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3664677A JPS53121550A (en) 1977-03-31 1977-03-31 Automatic sound volume controller

Publications (1)

Publication Number Publication Date
JPS53121550A true JPS53121550A (en) 1978-10-24

Family

ID=12475603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3664677A Pending JPS53121550A (en) 1977-03-31 1977-03-31 Automatic sound volume controller

Country Status (1)

Country Link
JP (1) JPS53121550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278311A (en) * 1988-09-14 1990-03-19 Omron Tateisi Electron Co Sound volume adjustor for voice output device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278311A (en) * 1988-09-14 1990-03-19 Omron Tateisi Electron Co Sound volume adjustor for voice output device

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