Becasue of the rapid growth of private cars and urban sprawl, the urban traffic noise, construction noise and social activity noise continues to be the main source of urban noise. Particularlly during the college entrance examination, the green guard, no honking, and construction noise management which continues to play a significant role in the urban noise management. Our sound level meters can be used for environmental noise mesurement providing Leq, Lmax, Lmin, Ld, Ln, Ldn data.