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- Arifin Pepen
- Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung
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- Pribadi Idham
- Angklung Foundation, Saung Angklung Udjo
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説明
<p>The angklung is an Indonesian traditional musical instrument made entirely of bamboo. It usually consists of two or three rattle tubes that generate sound by vibrating the tubes. The generated sound is resonated by a rattle resonance tube to make it louder. The rattle tube is carved in a traditional way from a piece of bamboo with a certain length and diameter that are passed from generation to generation to produce the desired tone. In this investigation, we develop a mathematical model of sound generation by a rattle tube and formulate an equation for the frequency of the vibrated rattle tube from its physical and geometrical parameters. Since the rattle tube is not perfectly cylindrical, the frequency of the vibrated rattle tube is derived from the frequency equation for a perfectly cylindrical tube with a modification of the geometrical parameters to make them appropriate for the shape of the rattle tube. This equation can determine the tone frequency for given geometrical parameters of the tube and explain the relationship between the generated tone frequency and the resonant frequency. The model also shows that the discrepancy between the calculated and generated frequencies of the rattle tube is within the response of human ears.</p>
収録刊行物
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- Acoustical Science and Technology
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Acoustical Science and Technology 40 (3), 178-185, 2019-05-01
一般社団法人 日本音響学会
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詳細情報 詳細情報について
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- CRID
- 1390845713065624448
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- NII論文ID
- 130007641584
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- NII書誌ID
- AA11501808
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- ISSN
- 13475177
- 03694232
- 13463969
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- NDL書誌ID
- 029698048
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可