Abstract
AbstractDuring the last three years a study of the vibrations of the well-known Indian musical drums, the Mridangam and Thabala, has been carried out at the Indian Institute of Science, Bangalore, and the results of these investigations and the techniques used are summarized here.C. V. Raman first noticed that these drums are unique in producing a group of harmonic overtones. A satisfactory theory applicable to the Mridangam and the (right-hand) Thabala has been developed on the basis that these drums may be regarded as composite membranes with a radial step discontinuity in the density. The results of the theory are compared with the measured frequencies of vibrations of the drum-heads and found to agree closely.A separate theory has been developed for the Dugga, or the left-hand Thabala, which consists of an eccentrically loaded membrane. The frequency ratios of the lower modes of vibration of this drum-head have been obtained by replacing the effect of the unloaded annular region by an elastic spring w...
Published Version
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