噪声与振动控制Issue(z1)：194-196,3.DOI:10.3969/j.issn.1006-1335.2013.S1.044
小学教室噪声级与教师授课声级测量与分析
Measurement and Analysis of Background Noise Levels and Teachers’Speech Levels in the Classrooms of the Elementary School
摘要
Abstract
Background noise levels and teachers’speech levels are two important acoustical parameters which affect classrooms’acoustical environment. Measurements of background noise levels and teachers’speech levels were conduct in the classrooms of 10 elementary schools in Guangzhou. The results show that background noise level in unoccupied classrooms is beyond the threshold stated in“Code for design of sound insulation of civil buildings”. In working class, teachers’speech level is 70.7 dBA and noise pressure level is 61.5 dBA. The average background noise level and teachers’ average speech level would decrease with the growth of students’age, but signal to noise ratio retains about 9.5 dBA.关键词
声学/背景噪声级/授课声级/信噪比/小学教室Key words
acoustics/background noise levels/speech levels/signal to noise ratio/elementary classrooms分类
数理科学引用本文复制引用
汪俊东,彭健新,严南杰,王丹..小学教室噪声级与教师授课声级测量与分析[J].噪声与振动控制,2013,(z1):194-196,3.基金项目
国家自然科学基金（10774048，11374106）；广东省科技计划项目(2011B061300066)；广州市科技计划项目(2012KP021) （2011B061300066）
