Some characteristics of noise in air-conditioned landscaped offices

Shiu Keung Tang, J. W C Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


In the present study, noise measurements were carried out in 26 air-conditioned landscaped offices during lunch and office hours. The noise spectra show that, in general, the noise from office activities is of a frequency higher than 500 Hz. A-, B-and C-weighted sound levels are also calculated and it is found that linear relationships exist between these weighted levels. In addition, simple formulae are proposed for the estimations of noise criterion (NC) and noise rating (NR) from the A-weighted sound level which is also known as the equivalent sound pressure level. The air-conditioning systems affect the noise levels, NC and NR, but not the basic relationships between weighted sound levels, NC and NR.
Original languageEnglish
Pages (from-to)249-267
Number of pages19
JournalApplied Acoustics
Issue number3
Publication statusPublished - 1 Jul 1996


  • Indoor environment
  • Noise criteria
  • Room acoustics

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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