JPS5726988A - Automatic sound volume adjusting system - Google Patents

Automatic sound volume adjusting system

Info

Publication number
JPS5726988A
JPS5726988A JP10197780A JP10197780A JPS5726988A JP S5726988 A JPS5726988 A JP S5726988A JP 10197780 A JP10197780 A JP 10197780A JP 10197780 A JP10197780 A JP 10197780A JP S5726988 A JPS5726988 A JP S5726988A
Authority
JP
Japan
Prior art keywords
audio
sound volume
volume adjusting
adjusting system
speakers
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
JP10197780A
Other languages
Japanese (ja)
Inventor
Yukio Oota
Akinori Tomo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10197780A priority Critical patent/JPS5726988A/en
Publication of JPS5726988A publication Critical patent/JPS5726988A/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

  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To keep constant an audio transmission distance, by receiving the audio of a speaker with a microphone and making gain control of an amplifier with an audio output of the microphone. CONSTITUTION:An audio signal from a receiver 1 is applied to amplifiers 2-1, 2-2-2-n and broadcast from speakers 3-1, 3-2-3-n. The sound from the speakers corresponding to microphones 4-1, 4-2-4-n is picked up and inputted to a comparator 5. The gain of the amplifiers is changed with a gain control signal from the comparator 5 and the sound from the speakers can be changed so that the audio signal output from the corresponding microphones can be constant.
JP10197780A 1980-07-25 1980-07-25 Automatic sound volume adjusting system Pending JPS5726988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10197780A JPS5726988A (en) 1980-07-25 1980-07-25 Automatic sound volume adjusting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10197780A JPS5726988A (en) 1980-07-25 1980-07-25 Automatic sound volume adjusting system

Publications (1)

Publication Number Publication Date
JPS5726988A true JPS5726988A (en) 1982-02-13

Family

ID=14314915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10197780A Pending JPS5726988A (en) 1980-07-25 1980-07-25 Automatic sound volume adjusting system

Country Status (1)

Country Link
JP (1) JPS5726988A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542910A (en) * 1982-01-25 1985-09-24 Yamaha Hatsudoki Kabushiki Kaisha Motorcycle suspension system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542910A (en) * 1982-01-25 1985-09-24 Yamaha Hatsudoki Kabushiki Kaisha Motorcycle suspension system

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