کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
755563 | 895967 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimation of the absorption coefficients of the surfaces of classrooms
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 67, Issue 9, September 2006, Pages 936–944
Journal: Applied Acoustics - Volume 67, Issue 9, September 2006, Pages 936–944
نویسندگان
Murray Hodgson, Katrina Scherebnyj,