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Audio Detector With Using Electret Microphone

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oguzmania

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electret microphone detector

I'm looking for a sensitive audio detector circuit with using electret microphone.
I want to detect audio in 25 m2 area.

Are there anyone to help me? I'm waiting your answers and your suggestions.
 

Audio is represented as varying analog voltages in electronics.You first need to power up your Electret microphone, so it will convert audio into varying electric signal. You may then use an amplifier as a second stage, it depends on the situation. Then use the comparator with schmitt trigger in the last stage with some reference voltage.Your reference will determine the sensitivity of the circuit.
 

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    oguzmania

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