中文摘要：

阮是中国传统的弹弦乐器之一．但迄今为止，对其声功率一直未进行科学的测定．文中在一混响室内根据有关ISO及GB标准，对阮的声功率进行了首次测定，由两位资深乐师在混响室内分别演奏各自的乐器，围绕乐师和乐器布置四通道测试设备，对阮所辐射的声功率和动态范围进行测定，文中所介绍的测试方法对其它乐器声功率的测试具有借鉴意义，文中还首次公布了阮的声功率测试结果，民族乐器声功率的测试对于民族音乐厅堂的音质研究具有重要意义．

英文摘要：

Ruan is one of the most popular Chinese traditional plucked stringed instruments. But its sound power level has never been carefully measured. In this paper, the sound power measurements of Ruan were performed for the first time in a reverberation chamber according to ISO standard and Chinese national standard. Two qualified musicians performed on their own instruments in the center of the reverberation chamber. The radiated sound energy and the dynamic ranges of the middle and big Ruan were investigated by four channel acoustic measuring equipments. Typical sound power values were obtained through averaging and the results were reported in this paper. The method discussed here is valuable for the sound power measurements of other musical instruments. The measurement of the sound powers radiated by national musical instruments lays foundations for the investigation into the acoustics of national music halls.