MEASUREMENT ON THE SOUND POWER LEVEL FOR MECHANICAL NOISE

Because of changeable distribution of noise fields in different room and the different absorption coefficients of walls and ceilings, average absorption coefficient of room surface hase to be estimated,which is really a great trouble . Now,this problem is solved,because,as discribed in this paper, the mechanical noise of the A weighted sound power level can be calculated after the absorption coefficient and environmental correction value is obtained. Experiences show that the result is accurate enough for engineering practice.

Project Supported:

Clc Number:

TB524