Room Noise Detector Project Report

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

Room noise detector project report.

With sw1 in the first position the circuit is off. 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. Two op amps provide the necessary circuit gain for sounds picked up by a miniature electret microphone to drive a led. 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. The 70 db setting is for living rooms. Willard boyle and george e. The room noise detector circuit can detect the intensity of noise in a room and signal through a series of flashing led s.

The led on the detector will tum on to indicate the noise level at range 50 db to. Smith developed the ccd in 1969. Sound pollution is not a new issue. 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.

While researching the mos process they realized that an electric charge was the analogy of the magnetic bubble and that it could be stored on a. Place the small box containing the circuit in the room where you intend to measure ambient noise. A bromograph or uv exposure unit or uv screen exposure system is a fundamental instrument for making pcbs using the photo etching method. The 50 db setting is provided to monitor the noise in the bedroom at night.

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. Like that we can away from the noise which can influence our health or reduce the noise level. The fascinating fact about the project sound detector circuit using op amp 741 is that it can be designed within a small area on a pcb or veroboard as well. Mos technology is the basis for modern image sensors including the charge coupled device ccd and the cmos active pixel sensor cmos sensor used in digital imaging and digital cameras.

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.