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世界上最大的祭天建筑群──天坛，以其宝贵的艺术价值和丰富的文化内涵为举世瞩目，又以其奇妙的声学现象位列我国四大回音古建筑之首。该文首次运用现代物理实验方法和先进的测试仪器对天坛声学现象进行了现场测试与综合分析，揭示了“回音壁”、“一音石”、“二音石”、“三音石”、“圜丘台”和新发现的“对话石”声学现象机理，对古建筑声学现象研究提出了一些新见解。
The world’s largest building for worship, the Temple of Heaven, attracts worldwide attention for its valuable artistic value and rich cultural connotations. It is also ranked first in the country’s four major ancient Echo buildings with its wonderful acoustics. For the first time, a field test and comprehensive analysis of the acoustics of the Temple of Heaven were conducted using modern physics experiment methods and advanced testing instruments, revealing “echo wall”, “a sound stone”, “two sound stone” and “three sound stone”. The “Luqiu Terrace” and the newly discovered mechanism of the “dialogue stone” acoustic phenomenon have provided some new insights into the research of acoustics in ancient architecture.