373dbefa_jects_for_Engineering_Students__PROJECT_NAME
[SNO] 25 [PROJECT NAME] 
Room Noise Detector: The room noise detector circuit can detect the intensity of noise in a room and signal through a series of flashing LED’s. Three threshold noise levels like 50dB, 70dB and 85dB are fixed. If the noise in the room exceeds a particular threshold, it is indicated with the help of LED’s. A miniature electret microphone is used to detect the noise.
Top 25 Electrical Mini Projects for Engineering Students
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