中文摘要：

文章选取美国当代作曲家威廉·博尔科姆钢琴作品中点描技法的音响元素作为研究对象,借助统计学、和声力学等理论对《十二首钢琴练习曲》（12 Etudes for Piano）第1首中的力度、时值、演奏法以及音高参数进行了量化分析,进而观察作品中的材料特征、音响发展和结构布局,解读出作曲家在创作中利用音响元素实现了全局设计。

英文摘要：

This paper selected the sound elements of pointillism in contemporary American composer William Bolcom piano works as the research object, with the the- ories of statistics and harmony mechanics to quantitative analysis the dynamics, dura- tion, playing method and pitch parameters in the first one of 12 Etudes, and then ob- served the material characteristics, sound development and structural layout in the work, interpreted the composer using the sound elements in the creation to realize the overall design.