天坛皇穹宇声学现象的新发现

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，在世界古我上亦属罕见，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。

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

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.