隔音
声压
倍频程(电子)
声学
混响
声音(地理)
环境科学
测量不确定度
材料科学
物理
数学
统计
作者
Mikko Kylliäinen,Lauri Talus,Jesse Lietzén,Pekka Latvanne,Ville Kovalainen
标识
DOI:10.1016/j.apacoust.2021.108399
摘要
In 2015, the new standard ISO 16283–2 for field measurements of impact sound insulation introduced a low-frequency procedure (LF-procedure) for measuring impact sound pressure levels and reverberation times at 1/3-octave bands below 100 Hz. The LF-procedure is followed when the volume of the receiving room is smaller than 25 m3. The LF-procedure is based on studies concerning field measurements of airborne sound insulation. Its aim is to improve measurement uncertainty of low-frequency sound insulation measurements. The procedure has not been assessed for use with impact sound insulation measurements. The objective of this study was to assess the standardized LF-procedure in the field measurements of impact sound insulation. The results show that the measurement uncertainty is improved. However, the impact sound pressure levels raise 4 dB on average. The values of L′n,w + CI,50-2500 and L′nT,w + CI,50-2500 also increase from 2 dB to 7 dB in most cases.
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