RUI: Undergraduate Research in Musical Acoustics

RUI：音乐声学本科生研究

• 批准号: 1303251
• 负责人: Thomas Moore
• 金额: $ 21.47万
• 依托单位: Rollins College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1303251&HistoricalAwards=false
• 关键词: RUI; Undergraduate; Research; Musical; Acoustics

This award supports two related projects within the context of musical acoustics. The two projects represent complex problems involving energy transfer in metal structures. The specific goals are to understand the stick-slip excitation mechanism of idiophones and to determine how structural vibrations affect the sound of brass wind instruments. Studies of the stick-slip excitation of idiophones will be performed using electronic speckle pattern interferometery, laser Doppler vibrometry and recordings of the acoustic field resulting from the vibrations. The results of the experimental research will be compared to a computer model that includes the dynamic effects, as well as the effects attributable to the size of the region of interaction between the instrument and the driver. Studies of structural vibrations of brass wind instruments will involve both optical and acoustic measurements. Previous work has shown that the vibration of the walls of the instrument contribute substantially to the sound produced by the instrument, and that this contribution is not due to direct radiation of the vibrating metal into the surrounding air. This research will lead to an understanding of the mechanism through which the vibrating metal contributes to the sound field.This work involves undergraduate students, particularly women, in original research. While the systems under study involve musical instruments, the research centers on studying basic physical phenomena which are not unique to musical acoustics. The work will contribute to the understanding of physical systems while providing undergraduate students the opportunity to be involved in original scientific research through a subject they find fascinating.

该奖项支持音乐声学领域的两个相关项目。这两个项目代表了涉及金属结构中能量传递的复杂问题。具体目标是了解idiphons的粘滑激励机制，并确定结构振动如何影响铜管乐器的声音。将使用电子散斑干涉仪、激光多普勒振动仪和由振动产生的声场记录来研究idiphoner的粘滑激励。实验研究的结果将与计算机模型进行比较，该模型包括动态效应，以及归因于仪器和驾驶员之间相互作用区域大小的效应。铜管乐器结构振动的研究将涉及光学和声学测量。先前的工作表明，乐器壁的振动对乐器产生的声音有很大的贡献，而且这种贡献不是由于振动的金属直接辐射到周围的空气中。这项研究将有助于理解金属振动对声场的作用机制。这项工作需要本科生，特别是女性，参与原创研究。虽然所研究的系统涉及乐器，但研究重点是研究音乐声学所独有的基本物理现象。这项工作将有助于理解物理系统，同时为本科生提供通过他们觉得有趣的主题参与原创科学研究的机会。