Abstract—Noise is one of the most found physical contaminants in the manufacturing Industry. Professional deafness or even permanent hearing loss may produce due to most negative effect caused by noise exposure. It also produce ill effects on people’s health, since basic activities such as sleeping, resting, studying and communicating etc. are highly affected. It endures high environmental pollution. We have collected different noise related parameters like Leq (Equivalent sound level), Lav (Average sound level), LAE (Sound exposure level) and TWA (Time Weighted Average level) from different machines used in an industry, especially power press machine, grinding machine etc. We propose a noise exposure minimizing technique with the help of Karnaugh map which is generally used in Boolean algebra simplification. By implementing Karnaugh map technique, different noise exposure parameters are minimized, and maximum sound exposure sources are identified.

Index Terms—Precision dosimeter, Small scale Industry, Noise exposure, Effect of noise, Karnaugh map.

Pijush Kanti Bhattacharjee is an Assistant Professor in the Department of Electronics and Telecommunication Engineering in Assam University (A Central University), Silchar, Pin 788011, Assam, India.
(phone: +91-33-25954148, email: pijushbhatta_6@hotmail.com).
Tirtharaj Sen is an Assistant Professor in the Department of Electrical Engineering, Asansol Engineering College, Kanyapur, Vivekananda Sarani,Asansol, Burdwan-713305, India.
(Phone: +91-9432851324, email: tirtha.bitm@gmail.com)
Dr. Debamalya Banerjee, Ph.D (Engg.) is currently a Reader in the Department of Production Engg., Jadavpur University.
(Phone: +91-9432283650, email: debamalya_banerjee@yahoo.co.uk)
Dr. Bijon Sarkar is currently a Professor in the Department of Production Engineering, Jadavpur University, Kolkata, India.
(Phone: +91-9432283650, email: bijon_sarkar@email.com)

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Cite: Pijush Kanti Bhattacharjee, Tirtharaj Sen, Debamalya Banerjee, Bijon Sarkar, "Minimize Noise Dose Exposure by Karnaugh Map Technique for a Small Scale Manufacturing Industry in West Bengal of India," International Journal of Environmental Science and Development vol. 2, no. 2, pp. 87-90, 2011.