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J Acoust Soc Am. 2005 Feb;117(2):926-33.

Modal analysis and intensity of acoustic radiation of the kettledrum.

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DIENCA-CIARM, University of Bologna, Viale Risorgimento, 2, I-40136 Bologna, Italy.


The acoustical features of kettledrums have been analyzed by means of modal analysis and acoustic radiation (p/v ratio) measurements. Modal analysis of two different kettledrums was undertaken, exciting the system both by a hammer and a shaker. Up to 15 vibrational modes were clearly identified. Acoustic radiation was studied using two ways. Based on previous experiments of other researchers, a new parameter, called intensity of acoustic radiation (IAR), has been defined and measured. Results show a strict relationship between IAR and the frequency response function (FRF, which is the v/F ratio), and IAR also strongly relates the modal pattern to acoustic radiation. Finally, IAR is proposed for vibro-acoustical characterization of kettledrums and other musical instruments such as strings, pianos, and harpsichords.

[Indexed for MEDLINE]

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