Measurement and simulation of noise in manufacturing industry in Malang City, Indonesia

Noise is one form of pollution that occurs in big cities. Increased noise pollution is influenced by various noise sources, for example construction activities or the number of motorized vehicles in certain areas. Continuous noise exposure with a noise level higher than 85 dB can cause effects on humans in general are physiological and psychological. In this study noise measurements and will be carried out in the manufacturing industry. It is expected that in this study, not only can produce noise simulations, but also provide scientific contributions to both engineering and social sciences. The results showed that the sound intensity generated by the factory machine at location 1 gave a maximum value of 103.5 dB on Thursday, while at location 2 the maximum value on Thursday is 82.1 dB and the minimum value is 58.3 dB on Tuesday for each total for one week. This difference is caused by the accumulation of noise levels with increasing time and outside noise activity that can affect the measurement value. Measurements made for one week gave an average value of 92.29 dB at location 1 and 67.59 dB at location 2.