Abstract:

Using electronic TV holography, as well as other methods for observing vibrational motion and sound radiation, the normal modes of vibration in two violins have been studied. The principal modes observed in a Hutchins violin showed fairly good agreement with those reported by Marshall [J. Acoust. Soc. Am. 77, 695--709 (1985)] for the same violin. The strongly radiating T[inf 1] and C[inf 3] modes appear to be doublets, and this phenomenon is discussed. Vibrational modes excited by a force applied to the bridge by internal sound pressure, and by the sound field of a loudspeaker are compared.