Room Noise Detector Project Report

This circuit is intended to signal through a flashing led the exceeding of a fixed threshold in room noise chosen from three fixed levels namely 50 70 85 db.

Room noise detector project report.

Place the small box containing the circuit in the room where you intend to measure ambient noise. The led on the detector will tum on to indicate the noise level at range 50 db to. Sound pollution is not a new issue. The 70 db setting is for living rooms.

The main purpose of doing this project is to build a detecting sensor to detect the noise level around us. A bromograph or uv exposure unit or uv screen exposure system is a fundamental instrument for making pcbs using the photo etching method. Willard boyle and george e. Smith developed the ccd in 1969.

With sw1 in the first position the circuit is off. If the led is steady on or flashes bright often then your bedroom is inadequate and too noisy for sleep. Noise detector a room noise detector could serve as a burglar alarm during the night it could serve as a child protection device near a door to the outside of the home. The 50 db setting is provided to monitor the noise in the bedroom at night.

To attain maximum possible gain of ic1 and sensitivity of ic2 adjust the respective values of potentiometer vr1 and vr2 as stated in the earlier paragraphs. If the noise in the room exceeds a particular threshold it is indicated with the help of led s. This circuit is intended to signal through a flashing led the exceeding of a fixed threshold in room noise chosen from three fixed levels namely 50 70 85 db. Unfortunately its price is usually prohibitive for a normal diy maker and the uv neons are expensive anyway if you re thinking of building one.

Like that we can away from the noise which can influence our health or reduce the noise level. Three threshold noise levels like 50db 70db and 85db are fixed. Two op amps provide the necessary circuit gain for sounds picked up by a miniature electret microphone to drive a led. The room noise detector circuit can detect the intensity of noise in a room and signal through a series of flashing led s.

So that a room noise detector is used to detect the noise has been build.