摘要
通过双表面测量,求得吸声系数与环境修正值,再计算机器噪声声功率级。克服了由于不同房间噪声场分布不均与房间四壁吸声系数各不相问,必须估算房间表面平均吸声系数带来的困难。验证表明,所得结果在工程中实用是够精确的。
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.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
1991年第2期110-114,共5页
Journal of Chongqing University
关键词
噪声
吸声系数
声功率级
测量
noise
absorption coef f icient
A-weighted sound power level
environmental cor-rection value
