Getting constant volume o/p level dispite increase/decrease in i/p volume level.

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sanjay_bhardwaj

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Please help in a project which can give constant level of volume at its output whether the input volume level is increased/decreased (within certain limits) and microphone should act as input device.
The out put volume level should be automatical maintained at fixed pre-determined level without any manual adjustment required.

P.S.- Please start from very basic and speacial consideration towards power consumption.
 

you would start with a AGC Automatic gain control amplifier this would keep the level constatnt
 

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