再谈茅山革命纪念碑军号声成因  

Discussing the acoustic phenomenon at Maoshan Revolution Monument again

作　　者：李志军[1] 严立中[1] 王林 

机构地区：[1]扬州大学信息工程学院,扬州225009 [2]扬州市卫生局,扬州225009

出　　处：《声学技术》2007年第6期1201-1204,共4页Technical Acoustics

摘　　要：江苏镇江苏南抗战胜利纪念碑有个奇特的声学现象:人们放鞭炮后传回来的声音不是鞭炮声,而是变成了嘹亮的军号声。对此现象进行了实地测量,现场录音,综合分析了军号声现象是在鞭炮爆炸冲击波的作用下,经碑前台阶的反射而产生的,台阶的步长决定了反射声的音调;台阶的组数决定了音节数;连接各组台阶中间的平台对应着音节间的间隔;如此形成由6个音符组成的军号声。文章对此作出比较详细的分析及解释。A strange acoustic phenomenon at Sunan War Victory Monument in Zhenjiang city, Jiangsu Province. People found that not the firecracker sound, but the resonant bugle sound is heard at the time of setting off firecrackers. The research on the spot and the records of the reflecting sound was done. It has been known that the bugle sound is caused by the reflection of shock wave and the step length determines the tone of the reflective sound, and that the groups of the steps decide the syllables and the platforms, which are in the middle of the connections between every two groups, correspond to the intervals between syllables. As a result, the bugle sound with six notes is formed. The article has made more detailed analysis and interpretation.

关 键 词：声反射 声速 音凋 音色 

分 类 号：TB52[理学—物理]