The comparison of analytic and measured reverberation time of underground stations

• Autores: Elzbieta Nowicka
• Localización: Proceedings of the ISRA 2007 Seville, Vol. 3, 2008 (Oral Session Communications), ISBN 9788469082676
• Idioma: español
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• Resumen

  • In the acoustic literature there is a lot of parameters and methods to asses acoustic climate of any room. The reverberation time is one of the most famous and commonly used method. There is some of literature concerning the acoustic conditions of underground stations, but still there is a lack of knowledge about methods allowing the correct estimation of the reverberant conditions of this kind of enclosures. This paper compares results of reverberation times (EDT, T20 and T30) in the Warsaw´s underground stations with Sabine´s, Norris � Eyring´s, Knudsen´s and other formulas. This comparison indicated that calculations may give incorrect reverberation time values, especially in long enclosures with reflective boundaries. In the paper there is also presented the dependence of the reverberation time on the source � receiver distance for the enclosures with reflective boundaries.