Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
755563 | Applied Acoustics | 2006 | 9 Pages |
Abstract
Measurements of early-decay time and multivariable linear-regression techniques were used to estimate the 125–8000-Hz octave-band absorption coefficients of eight types of surfaces in university classrooms. The eight types were ‘hard surfaces’, ‘paneled surfaces’ (including hard seats and windows), ‘glued-on acoustical tiles’, ‘suspended acoustical ceilings’, ‘carpeted surfaces’, ‘upholstered seats’, ‘porous absorbers’ and ‘Helmholtz-resonator absorbers’. In general, resulting estimates were statistically significant, physically realistic and in good agreement with previous results. Values for suspended acoustical ceilings were significantly lower than published data.
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Authors
Murray Hodgson, Katrina Scherebnyj,