天坛皇穹宇“对话石”声学现象成因及其与“回音壁”关系的研究

Studies of the "Dialogue Stones" and Their Relationship with the Echo-Wall at Shrine of Heaven

北京天坛回音壁早已为人所熟知。但黑龙江大学的有关学者在对回音壁作声学研究测试时,意外地发现了“对话石”声学现象。本期发表了他们的研究成果。

Most of the acoustical phenomena associated with the Shrine of Heaven are found in the Imperial Vault of Heaven, such as the socalled '1st-sound stone', '2nd-sound stone' and '3rd-sound stone'. During the test conducted by the research group on these stones in March 1994, another one, 'dialogne stone' was found. The acoustic mechanism of the phenomenon and its relationship with the echo-wall are discussed in this paper.