JPS5726988A - Automatic sound volume adjusting system - Google Patents
Automatic sound volume adjusting systemInfo
- 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
Links
- 230000005236 sound signal Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4542910A (en) * | 1982-01-25 | 1985-09-24 | Yamaha Hatsudoki Kabushiki Kaisha | Motorcycle suspension system |
-
1980
- 1980-07-25 JP JP10197780A patent/JPS5726988A/en active Pending
Cited By (1)
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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