摘要
基于双层墙隔声和多孔吸收原理,结合储粮害虫活动声的特征,设计了一种体积为6m3的隔声室.该隔声室利用胶合板作为双层墙壁材料,两墙壁间距离为0 08cm,外墙壁均匀穿孔,孔径为1mm,间距为1 5cm,并在支撑物上加垫较硬吸声材料组成准双重穿孔隔声结构.实验表明,在125～2000Hz的频带范围内,隔声室能均匀隔离环境噪声,平均隔声量为22dB,可满足储粮害虫活动声的频率范围和声压级要求.
Based on the principle of double-layer wall sound insulating and porous absorption, a six cubic meter isolation booth is designed according to the characteristics of stored grain insect action sound. A quasi-double layer perforated structure, with veneer as walls, its space between being 008 cm, is built when the outer wall is perforated, with each aperture 1 mm, space length 1.5 cm, and the hard sound absorption material is added to the supported. The ambient noise is uniformly insulated between 125 Hz and 2 000 Hz, averagely insulating sound about 22 dB, by the isolation booth, and that fits in with the spectrum and SPL of stored grain insect action sound. The test result shows that the isolation booth is small in volume, economical in materials and good in sound insulating effect.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期50-52,共3页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(10274047)
渭南师范学院科研基金资助项目(03YKS005)
关键词
隔声量
墙壁
外墙
双层
吸声材料
间距
隔声结构
穿孔
支撑物
活动
stored grain insect
action sound
quasi-double layer perforated structure
isolation booth
design
