Calculation and Analysis of Acoustical data of multipurpose hall, Case study: Gorgan music hall

The multipurpose hall studied here is the part of design project of gorgan music hall designed in the centeral region of gorgan and submitted in the final project of first author’s master thesis. The aim of establishment of multipurpose hall is creation of a space that be suitable for speech and music performance simultaneously. According to the evidences the reverberation time is most important parameter for performance design. This value was considered 1.0(s) for speech and 2.0(s) for music in average. Having volume and effective absorber surfaces values and using Sabine equation for RT, absorption coefficient was obtained for different parts of the hall. Due to assumed data, the values of C50, C80, ALcons, CD, D/R ratio, both for the music and speech were presented. Some of the results given to standards were suitable and some another were rather acceptable. Finally, several solutions were presented in the analyzing part for the best result.