RUI: High Speed Electronic Speckle Pattern Interferometer for Undergraduate Research in Musical Acoustics

RUI：用于音乐声学本科研究的高速电子散斑干涉仪

• 批准号: 0551310
• 负责人: Thomas Moore
• 金额: --
• 依托单位: Rollins College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0551310&HistoricalAwards=false
• 关键词: RUI; Speed; Electronic; Speckle; Pattern

This award supports the design and construction of a high-speed electronic speckle pattern interferometer for use by undergraduate students in the study of musical instruments. Of specific interest are the motions of idiophones and membraphones during and immediately after the initial transient. The interferometer will have an acquisition rate in excess of 40,000 frames per second and will be able to resolve sub-micrometer motion of diffusely reflecting objects. After construction, the interferometer will be used to study the transient response of the American five-string banjo and the soundboard of a piano as it transitions to the steady-state. This work will demonstrate the effectiveness of the new interferometer, result in the first measurements of the transient motion of the banjo head, and provide direction for a more detailed theoretical investigation of this complex musical instrument. In addition to the banjo, the interferometer will be used to investigate the transient motion of a piano soundboard. The new interferometer will allow a detailed investigation of how the soundboard makes the transition to steady-state and will help validate a time-dependent finite-element model of the soundboard. Results from the study of the five-string banjo will have application to various problems involving transient phenomena in circular membranes. Likewise, investigations of the piano soundboard will have direct application to the study of the vibrations of plates and shells. This research project is also designed to enhance the laboratory's ability to attract and develop undergraduate research students, especially women.

该奖项支持设计和建造高速电子散斑干涉仪，供本科生在乐器研究中使用。 特别感兴趣的是在最初的瞬态期间和之后的个体音和膜音的运动。 干涉仪的采集速率将超过每秒40，000帧，并将能够分辨漫反射物体的亚微米运动。 建成后，干涉仪将被用来研究美国五弦班卓琴和钢琴音板的瞬态响应，因为它过渡到稳态。 这项工作将证明新的干涉仪的有效性，结果在班卓琴头的瞬态运动的第一次测量，并提供了更详细的理论研究这个复杂的乐器的方向。 除了班卓琴，干涉仪将被用来研究钢琴音板的瞬态运动。 新的干涉仪将允许一个详细的调查如何音板过渡到稳态，并将有助于验证一个随时间变化的有限元模型的音板。 五弦班卓琴的研究结果将应用于涉及圆形膜中瞬态现象的各种问题。 同样地，对钢琴音板的研究将直接应用于对板和壳的振动的研究。 该研究项目还旨在提高实验室吸引和培养本科研究生，特别是女生的能力。