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8 December 1997 Optical reproduction of sounds from old phonographic wax cylinders
Takashi Nakamura, T. Ushizaka, Jun Uozumi, Toshimitsu Asakura
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Proceedings Volume 3190, Fifth International Topical Meeting on Education and Training in Optics; (1997) https://doi.org/10.1117/12.294398
Event: Fifth International Topical Meeting on Education and Training in Optics, 1997, Delft, Netherlands
Abstract
It is shown that reproduction of sounds from old wax cylinders using various optical methods gives quite excellent materials in optics education. The laser-beam reflection method is explained by the geometrical optics, and is further discussed on the basis of the diffraction theory. Various techniques for improving the quality of reproduced sounds are introduced. Fiber optics is used for reproduction of sounds in a low pressure stylus contacting method. Applications of the laser- beam reflection method to other analogue recordings are introduced.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Takashi Nakamura, T. Ushizaka, Jun Uozumi, and Toshimitsu Asakura "Optical reproduction of sounds from old phonographic wax cylinders", Proc. SPIE 3190, Fifth International Topical Meeting on Education and Training in Optics, (8 December 1997); https://doi.org/10.1117/12.294398
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KEYWORDS
Diffraction
Fiber optics
Geometrical optics
Laser applications
Optics education
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