棒状発音体の研究
Study on Cantilever Bell

Aritoshi Tatemichi
1960 Acoustical Science and Technology  
The so − colled ' ' cantilever be1P ' is a kind of percussion instrument used 皿 ainly in a clock and consists of a straight rod of bronze or steel with a slender port 量 on at the clamped end . The characteristics of strike tone of this instrument depend on the dimension of this pordon . In this paper we investigated ana 工 yticaUy by Cowley −Levy ' s method the effe 【rts of narrowing the section of rod at 士 he clamped end on the natural frequencies of the system and obtained the ge ロ eral
more » ... he ge ロ eral equation that determhユe the frequencies of overtone of this be1L From this equation it is shown that the cantilever rod with an extreme slender portion at th eclamped end can be regarded as one end supPorted red instead of one end clamped rod 。 As we well know , the overtones of the cantilever rods with uniferm section are not harmonics but if the rod has the section narrowed suitably in the neighbo エhood of the cbmped end , they harmonize partly, and also a fundamental tone is greatly decreased in frequency. § 1. 序
doi:10.20697/jasj.16.3_164 fatcat:umlxlx5uxjgxzfqr3srrbalvye