Ledenev V.I., Antonov A.I., Zhdanov A.E.Statistical Energy Methods of Reflected Noise Fields Calculation in Halls // Scientific article. Journal "Transactions of the TSTU", vol. 09 , Tambov. TSTU publisher house , 2003. (pdf-file) Abstract: Distribution of reflected sound energy indoors depends on proportion of room size and sound absorption features of enclosure and tends to decrease when moving away from the sound source. There is some connection between sound strength flow and density gradient of reflected energy in the form of transfer coefficient, describing physical indoor characteristics from the point of forming reflected sound field. On this basis calculation model for density distribution of reflected sound energy indoors is developed. The model is implemented by analogue, analytical and numerical methods.