Applying electronic speckle pattern interferometry to the study of musical instruments.
An overview of the electronic speckle pattern interferometer as a tool for the study of structural vibrations will be presented, highlighting both the theory and construction of the device. Two specif...
An overview of the electronic speckle pattern interferometer as a tool for the study of structural vibrations will be presented, highlighting both the theory and construction of the device. Two specif...
Modes of the kalimba resonator box.
The kalimba is an African instrument with plucked metal tines mounted on a resonator box made of hardwood. The box features both acoustic (related to air in the cavity and holes) and structural resona...
The kalimba is an African instrument with plucked metal tines mounted on a resonator box made of hardwood. The box features both acoustic (related to air in the cavity and holes) and structural resona...
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Constructing and using a low cost speckle pattern interferometer for analysis of musical instruments. (A)
J. Acoust. Soc. Am. Volume 124, Issue 4, pp. 2510-2510 (October 2008)
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Following the design of Moore [Am. J. Phys. 72, 1380 (2004)], a speckle-pattern interferometer for use in exploring the mode shapes of vibrating structures, especially musical instruments, has been constructed. The interferometer was built primarily by undergraduates with mostly common optical elements found in any undergraduate optics laboratory. The interferometer uses a FireWire (IEEE 1394) camera, which has a built-in frame-grabbing capability, eliminating the need for expensive frame-grabbing hardware. The interferometer has been used to study vibrating structures such as snare drum heads, mandolins, and a tennis racket. The interferometer has also been used to study the the vibrational properties of a cured carbon fiber disk. The design and implementation of an affordable speckle-pattern interferometer along with a brief overview of some of the results of research projects conducted with undergraduate students will be presented.
©2008 Acoustical Society of America
©2008 Acoustical Society of America
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