音乐厅音质综合评价

Overall evaluation for concert hall acoustics

通过综合许多厅堂音质专家的意见，本文建议一个更为完整的评价厅堂音质的因子集和较为合理的隶属度函数以便用于音乐厅音质的模糊集综合评价。所建议的因子集包括混响时间ＲＴ，合奏强音乐段的平均声压级ＬｐＦ，侧向效率ＬＥ，早期衰减时间的频率特性｜ＥＤＴ（ｆ）｜，以及音乐厅中１０ｌｇＬＥ值的极差Ｖｍａｘ（１０ｌｇＬＥ）。本文通过一个实例来表明综合评价的具体过程。可看出将模糊集方法应用于音乐厅音质的综合评价是可行的，因为它可以在模糊评估的基础上给出一个定量的评价结果。

By summing up the opinions of many experts about concert hall acoustics, this paper suggests a more complete factor set and more realistic membership functions for the fuzzy set evaluation of concert hall acoustics. The factor set includes the reverberation time RT, the mean forte sound pressure level LpF, the lateral efficiency LE, the frequency characteristic of early decay time | EDT(f)|, and Vmax(10 lg LE ), the maximum variation of 10 lg LE in a hall. An example shows the evaluation procedure in detail. It seems that the fuzzy set method is feasible for evaluating concert hall acoustics, because it can give a quantituhve evaluation result from the fuzziness basis.