UBC - Classroom Acoustical Survey
Abstract
Acoustical measurements were made in 46 randomly-chosen, unoccupied University of British Columbia (UBC) classrooms. Further tests were done in 10 UBC classrooms when both unoccupied and occupied by students, in order to determine the effect of people and to correct the 'unoccupied' results. The objective of the work was to determine the acoustical quality of the UBC classroom stock and how this depends on the classroom design. The results showed that the UBC classroom stock is of far from optimum acoustical quality. This was found to be because many classrooms have excessive reverberation and result in low speech levels, especially at the back of the rooms; in addition, some have noisy ventilation systems. Further work is in progress to determine user reaction to the acoustical conditions, typical studentgenerated noise levels and the effect of speech-reinforcement systems.
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