Reverberation times and speech transmission indices in classrooms

Shiu Keung Tang, M. H. Yeung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


Octave band reverberation times, background noise levels and speech transmission indices measurements were carried out in eighteen government subsidized primary and secondary schools in Hong Kong. Various normal classroom operation conditions were considered. Results illustrate that strong correlation exists between the reverberation times and the speech transmission indices regardless of the background noise levels and their NC values in the present study. The arithmetic average of the reverberation times in the 250 Hz to 4 Hz octave bands and the 1 kHz octave band reverberation time are found to be more important in the correlation in general. These findings provide a convenient mean for speech transmission design in classrooms.
Original languageEnglish
Pages (from-to)596-607
Number of pages12
JournalJournal of Sound and Vibration
Issue number3
Publication statusPublished - 1 Jan 2006

ASJC Scopus subject areas

  • General Engineering
  • Mechanical Engineering


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