کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
754886 1462434 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Implementation and evaluation of a diffusion equation model based on finite difference schemes for sound field prediction in rooms
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Implementation and evaluation of a diffusion equation model based on finite difference schemes for sound field prediction in rooms
چکیده انگلیسی

In this paper, the use of finite difference schemes for the acoustic diffusion equation model is introduced. Their features and limitations are analysed to select the adequate scheme based on both the stability conditions and the error order. The air absorption effects on the implementation are also discussed in terms of stability. To investigate the validity of the implementation, a set of simulations was conducted in a cubic room with four different absorption distributions. This evaluation was done by increasing either the spatial or the temporal resolutions of the studied scheme. The predicted values are compared with the statistical theory and geometrical models. The simulations suggested an empirical criterion for predicting the spatial and temporal resolutions that maximise the performance of the finite difference scheme.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 73, Issues 6–7, June–July 2012, Pages 659–665
نویسندگان
, , ,