Influence of Sound-Absorbing Material Placement on Room Acoustical Parameters

Jose Cucharero Moya, Tuomas Hänninen, Tapio Lokki

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The reverberation of a room is often controlled by installing sound absorption panels to the ceiling and on the walls. The reduced reverberation is particularly important in classrooms to maximize the speech intelligibility and in open-plan offices to make spaces more pleasant. In this study, the impact of the placement of the absorption material in a room was measured in a reverberation room and in a mockup classroom. The results show that absorption material is less efficient if it is mounted to the corners or on the edges between the walls and ceiling, if the sound field is more or less diffuse. If the room modes dominate the sound field, the most efficient location for the sound-absorbing material was found at one of the surfaces causing the modes. The results help acoustical consultants to place the absorption material in optimal locations and, generally, minimize the amount of material and save costs.
Original languageEnglish
Pages (from-to)644-660
JournalAcoustics
Volume1
Issue number3
DOIs
Publication statusPublished - 7 Aug 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • room acoustics
  • absorption
  • acoustic materials

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