Assessment of the low-frequency procedure in the field measurements of impact sound insulation between dwellings

Mikko Kylliäinen, Lauri Talus, Jesse Lietzén, Pekka Latvanne, Ville Kovalainen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

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.

Original languageEnglish
Article number108399
JournalApplied Acoustics
Volume185
Early online date20 Sep 2021
DOIs
Publication statusPublished - 1 Jan 2022
Publication typeA1 Journal article-refereed

Keywords

  • Acoustical measurements
  • Building acoustics
  • Impact sound insulation
  • Low frequencies

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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