The acoustical insertion loss of ventilation window - On site test

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

In the present study, the acoustical insertion loss of a double layer ventilation window design was tested on site in a real building facing a very busy trunk road of Hong Kong. The outdoor noise level at 1 m away from the building façade ranged between 75 to 80dBA. Simultaneous measurements inside and at the façades of two adjacent rooms - one with the ventilation window and the other with a conventional side hang window, were carried out. The difference between the average noise levels (LA10) in the two rooms was the insertion loss of the ventilation window. It was found that under the strong external traffic noise, the ventilation window could provide a 8 dB noise level reduction compared with the conventional side hang window setup. The application of sound absorption material of NRC 0.75 on the bottom area of the window resulted in 1 dB increase in the insertion loss. The results had been confirmed by repeated measurements.
Original languageEnglish
Title of host publication41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Pages7594-7603
Number of pages10
Volume9
Publication statusPublished - 1 Dec 2012
Event41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 - New York, NY, United States
Duration: 19 Aug 201222 Aug 2012

Conference

Conference41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
CountryUnited States
CityNew York, NY
Period19/08/1222/08/12

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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