how to use a microphone as switch

[hussainking]

I want use a microphone  as switch,
if the mic is receive sound then get ='1';
else the mic is get ='0';

Or vice versa not problem.


please.... I want easy circuit.

;D

 

[audioguru2]

Hi Hussain,
Welcome to our forum. ;D
1) If the microphone is an electret type, then power it through a resistor from a filtered positive voltage.
2) Amplify the microphone signal with a simple opamp amplifier circuit.
3) Rectify and filter the opamp's output then you will have a "1" when there is sound and a "0" when there is no sound.

 

[hussainking]

thank you  ;D