Abstract
Acoustic Radiosity is a method based on an assumption of diffuse reflection and incoherent phase relationships that has been used to predict room sound fields. The sound field analysis of high frequency can be calculated in a short calculation time when this technique is used. In this research, the sound power level in the opening of a box which has a sound source in it is calculated by using the Acoustic Radiosity Method. Results were compared with experimental data and calculation results of Boundary Element Method (BEM). The sound power level on opening was calculated under conditions with and without partition board and noise absorbing material. As a result, it was verified that the result of the sound power on opening was calculated accurately by using Acoustic Radiosity when the field space was greater than the wavelength in spite of the fact that the calculation time was much less than that of BEM.
