天坛皇穹宇声学现象的新发现

A NEW DISCOVERY OF THE ACOUSTICAL PHENOMENON OF TIANTAN'S HUANGQIONGYU

天坛是我国珍贵的文化遗产，也是世界上最大的祭天建筑群。其设计之精、建筑之巧、风格之奇、回音之妙，在世界古建筑史上亦属罕见，成为人类建筑艺术的瑰宝，被列为我国四大回音古建筑之首。１９９４年３月２６日，作者在天坛皇穹宇内发现了一个与回音壁和东、西配殿相关的奇妙声学现象──天坛“对话石”声学现象。作者利用先进的测试分析仪器，运用物理学和声学原理，通过测试、计算和综合分析，揭示了对话石声学现象的形成机理，从而丰富了天坛建筑艺术的声学内容，为科学地保护和利用天坛皇穹宇提供了可靠的科学依据。这一声学现象的发现和科学解释对开发天坛这一旅游资源，促进旅游事业的发展也将起到积极的作用。

Tiantan(The Temple of Heaven),a precious cultural heritage of China,is the world's largest architectural complex for worshiping heaven.its exquisite design, skillful architecture,unique style and magic echo are rarely found in ancient buildings of the world. Therefore,it has become an art treasure in history and number one among China's four ancient echoing structures.on March 26,1994,our research group found the magic acoustical phenomenon of Tiantan's Dialogue Stone,which is related to the echoing wall and the Eastern and Western Side Halls in Huangqiongyu(The imperial Vault of Heaven)of Tiantan. Through teaing,calculating and analysing with advanced equipment,based on the principle of physics and acoustics,the research group discovered the forming mechanism of the acoustical phenomenon of the Dialogue Stone.With this,the acoustical connotation of art structure of Tiantan is enriched, and a reliable basis for protecting and making good use of Huangqiongyu is also suppplied.This new discovery and its scientific explanation are very important for cultivating the source of tourism and promoting its development.