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====== 7. Giant Sounding Plate ====== | ====== 7. Giant Sounding Plate ====== | ||
+ | =====课题描述===== | ||
+ | 7. **Giant Sounding Plate 巨型发声板** | ||
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+ | When a large, thin and flexible plate (e.g. plastic, metal or plexiglass) is bent, it may produce a loud and unusual howling sound. Explain and investigate this phenomenon. | ||
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+ | 当一个又大又薄又有弹性的板(如塑料、金属或有机玻璃)被弯曲时,它可能会发出一种响亮而不寻常的呼啸声。解释并研究这一现象。 | ||
+ | |||
+ | ===== 参考文献 ===== | ||
+ | |||
+ | Поющая пластина(2) - Proposal IYPT 2022 (youtube, ЭйНШтейн, 16.09.2020), https://youtu.be/yFvy0T_s904 | ||
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+ | S. Shankar, P. Bryde, and L. Mahadevan. Geometric control of topological dynamics in a singing saw. PNAS 119, 17, e2117241119 (2022) | ||
+ | |||
+ | R. Worland. The musical saw and the flexatone: An experimental study of confined vibrational modes in metal plates of variable curvature. J. Acoust. Soc. Am. 139, 2011-2011 (2016) | ||
+ | |||
+ | R. Cook. Vibration of a segment of a non-circular cylindrical shell: The "musical saw" problem. J. Sound Vibrat. 146, 339-341 (1991) | ||
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+ | A. Tubis and R. E. Davis. The musical saw-operational features and simple dynamical theory. J. Acoust. Soc. Am. 71, S82-S83 (1982) | ||
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+ | J. F. M. Scott and J. Woodhouse. Vibration of an elastic strip with varying curvature. Phil. Trans. R. Soc. A 339, 587-625 (1992) | ||
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+ | R. Worland. The musical saw: Musical acoustics of trapped vibrational modes in a curved blade. J. Acoust. Soc. Am. 145, 1750-1750 (2019) | ||
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+ | The unique mathematical physics of the singing saw (Amit Malewar, techexplorist.com, Apr 23, 2022), https://www.techexplorist.com/unique-mathematical-physics-singing-saw/ | ||
+ | |||
+ | Musical Saw / Scie Musicale : Gounod, Ave Maria par Grégoire Blanc (youtube, Grégoire Blanc, 15.12.2014), https://youtu.be/i5KiodkF2m4 | ||
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+ | N. H. Fletcher and T. D. Rossing. The physics of musical instruments (New York, SpringerVerlag, 1991) | ||
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+ | Lord Rayleigh. The Theory of Sound. (London, Macmillan, 1877, Courier Dover Publications, 1945), http://books.google.com/books? | ||
+ | ===== 实验计划与进展 ===== | ||
+ | |||
+ | ====主要脉络==== | ||
+ | |||
+ | 2023.10.10-2023.10.24 利用不同类型的板材,探究并选取合适的实验变量 | ||
+ | |||
+ | 2023.10.25-2023.11.09 使用Au2023,记录声音的波谱 | ||
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+ | 2023.11.10-2023.11.24 对选取的变量进行研究,实验记录数据 | ||
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+ | 2023.11.25-2023.12.09 考虑作用方式等因素对发声的影响 | ||
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+ | 2023.12.10-2023.12.24 实验数据比对,修正理论模型 | ||
+ | |||
+ | ====具体记录==== | ||
+ | |||
+ | ===第一学期=== | ||
+ | |||
+ | <tabbox 第01周> | ||
+ | |||
+ | |||
+ | |||
+ | <tabbox 第02周> | ||
+ | 组建团队,和符老师交流后明确了课题的基本图像和前期应该做什么准备工作 | ||
+ | |||
+ | |||
+ | <tabbox 第03周> | ||
+ | 小组成员集体学习相关理论知识 | ||
+ | |||
+ | |||
+ | <tabbox 第04周> | ||
+ | 学习频谱分析有关知识,下载并学习audition | ||
+ | |||
+ | <tabbox 第05周> | ||
+ | 国庆放假 | ||
+ | |||
+ | |||
+ | <tabbox 第06周> | ||
+ | |||
+ | ===周一=== | ||
+ | |||
+ | 完成预实验,确定研究的自变量与因变量,设计改进实验装置 | ||
+ | |||
+ | |||
+ | <tabbox 第07周> | ||
+ | |||
+ | |||
+ | |||
+ | <tabbox 第08周> | ||
+ | |||
+ | |||
+ | |||
+ | <tabbox 第09周> | ||
+ | |||
+ | |||
+ | |||
+ | <tabbox 第10周> | ||
+ | |||
+ | </tabbox> | ||
+ | |||
+ | ===== 讨论区 ===== | ||
+ | |||
+ | >有什么问题可以在这里留言(不过好像用微信更快,但记得保存记录 (..•˘_˘•..)) |