Analysis of the sound and vibration of sundatang

UNSPECIFIED (2015) Analysis of the sound and vibration of sundatang. Doctoral thesis, Universiti Malaysia Sabah.

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Abstract

There are many traditional musical Instruments available in Sabah, Malaysia. One of them is the sundatang. One of the pressing issues is that the assimilation of this musical Instrument with the contemporary music is very limited. This could be associated to limited research on the instrument that may contribute to better understanding and also quality. In this view, the acoustical and vibrational studies of sundatang are really required. The objectives of this research are to study the construction technique, physical, acoustical and vibrational properties of sundatang.This research was carried out by observing the construction technique, measuring the physical, acoustical, and static and dynamic vibrational properties of sundatang. In this research, construction technique of sundatang is first documented and several equations that explaining the physical properties and calculating the fundamental frequency at each frets are formulated. On the other hand, effects of the sound hole, back plate, find tuner cord, string pad, plucking point and plucking force are explained. In the static vibrational measurement (without strings), it is found that fundamental frequency of the top plate and back plate of the acacia sundatang is greater than the vitex sundatang in free edge and in the range of 112 Hz to 230 Hz. However, their fundamental frequency was modified and become lower and closer to each other in the range of 55 Hz to 59 Hz in a clamped edge (attached to its ribs). In the dynamic vibrational measurement (in operating mode),the vibrational properties once again changed when the strings were fixed to the instrument. The natural frequencies of the top plate and back plate are closer to the natural frequencies of the vibrating string, which excites the soundboard to vibrate. The impressive finding in this research is the occurrence of the Different State of Mode (DSM) phenomenon on sundatang soundboard in free condition or fixed to its ribs (static). This DSM disappeared when the strings were fixed in operating mode. The strings modify the vibrational properties of sundatang soundboard. This research has successfully designed a protocol and procedures to study acoustical and vibrational properties of sundatang by the adaptation from the studies of the other modern musical instruments such the guitar and violin. It is hoped that the findings of this research could be used in future studies of the quality advancement of sundatang and also other stringed traditional musical instruments in Sabah.

Item Type:	Thesis (Doctoral)
Keyword:	Sundatang, Construction technique, Vibrational properties, Physical, Acoustical
Subjects:	Q Science > QC Physics > QC1-999 Physics > QC251-338.5 Heat
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	DG MASNIAH AHMAD -
Date Deposited:	24 Oct 2017 11:39
Last Modified:	15 Apr 2024 15:16
URI:	https://eprints.ums.edu.my/id/eprint/10151

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