A Simple Formula for Predicting the Reverberation Time in Long Enclosures
نویسندگان
چکیده
Reverberation time is one of the key elements for assessing the perception of sound in an enclosed space. It affects the noise propagation, speech intelligibility, clarity index, and definition. Since sound field in the long enclosure is non diffuse, classical room acoustics theory does not apply in long enclosures. Since 1960s, a number of theoretical investigations relating to sound propagation in long enclosures have been carried out but most of theses formulations are time consuming and too complex for routine use at a preliminary design stage. In order to simplify the numerical analysis, a simple yet sufficiently accurate numerical formula is developed that can be used to predict the reverberation time with a simplified formulation. Field measurements have been conducted in a model tunnel and a long corridor to explore the validity of the proposed numerical scheme.
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