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・ Phonics
・ Phonics Group of Institutions
・ Phoning home
・ Phoning Home (book)
・ Phoniscus
・ Phonlawut Donjui
・ Phonney Martin
・ Phono
・ Phono-Comb
・ Phono-Cut Record Company
・ Phono-semantic matching
・ Phonobase Music Services
・ Phonocar
・ Phonocardiogram
・ Phonocentrism
Phonodeik
・ Phonodus
・ Phonofiddle
・ Phonofilm
・ Phonogenic Records
・ Phonognatha
・ Phonognatha graeffei
・ Phonogram
・ Phonogram (comics)
・ Phonogram (linguistics)
・ Phonogram Records
・ Phonograph
・ Phonograph cylinder
・ Phonograph Record (magazine)
・ Phonographic market


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Phonodeik : ウィキペディア英語版
Phonodeik
The Phonodeik is an sound recording apparatus invented by Dayton Miller in 1908. The Phonodeik converts sound waves into visual images. The name was suggested by Edward W. Morley. Before electronic oscilloscopes, this device was used for analyzing sounds waves. The Phonodeik can be modified to project sound waves on a screen for public demonstration.
==Description==

The Phonodeik used photographic material to record sound. A diaphragm receiver of thin glass is at the end of a resonator horn. Behind the diaphragm is a steel pulley spindle mounted in jeweled bearings with an attach mirror and oscillating tension spring. Wrapped on the pulley spindle are thin silk fibers or platinum wire turning around the mirror with amplitude. The sound vibrates the diaphragm on the bottom and a light beam is reflected to the sensitive photographic paper (or a projection screen).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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