An Empirical Formula for Sound Absorption of Fibrous Materials

• 作 者: 张新安
• 机 构: AcousticsInstitute,Xi＇anPolytechnicUniversity
• 出 处: Journal of Donghua University(English Edition)
• 发表日期: 2008年3期
• 关键词: 纤维材料 建筑声学 环境学 声音吸收 fibrous material SAC formula
• 基金项目: Key Laboratory Items of Shanxi Province, China（No. 05JS07）

The sound absorption coefficient(SAC)curves of the nonwovens,fabrics,and thick fibrous layers with the frequency in the range of 125-3 200 Hz and cavity distances of 5 cm,10 cm,20 cm,30 cm and 40 cm were measured.Based on analysis,it is found that the SAC