中国民族音乐厅堂音质研究

针对中国民族音乐厅堂的音质进行了两个方面的研究工作．其一是对一些主要的民族乐器的声功率进行了测量．根据此测量结果，建议采用乐队齐奏强音标志乐段的平均声压级Lpf作为表征民乐演出厅堂响度的新指标，并给出了，Lpf的计算公式．此外，还测量了若干实际厅堂的Lpf值，并与预测的Lpf值作了对比，同时进行了听众主观响度评价的调研．其二是采用可听化技术，在华南理工大学建筑声学实验室中通过主观优选试验确定了传统民族音乐演出厅堂的优选混响时间和响度值．

Investigation into Acoustics of Chinese National Music Halls

This paper involves two main works about the acoustics of Chinese national music halls. Firstly, the sound power levels of some of the major traditional musical instruments were measured. Based on the measured results, a new loudness criterion, Lpf, the mean forte sound pressure level of tutti-sound, was suggested to describe the loudness in a national music hall. Also, a formula for calculating Lpf was presented. Moreover, some site surveys are performed for the comparison between the predicted and the measured Lpf values, and corresponding subjective loudness evaluations were carried out. Secondly, by using the auralization technique, some subjective preference tests of the suitable reverberation time and loudness for traditional national music performances were taken in the Architectural Acoustics Laboratory of South China University of Technology.