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Phonautograph   Listen
noun
Phonautograph  n.  (Physics) An instrument by means of which a sound can be made to produce a visible trace or record of itself. It consists essentially of a resonant vessel, usually of paraboloidal form, closed at one end by a flexible membrane. A stylus attached to some point of the membrane records the movements of the latter, as it vibrates, upon a moving cylinder or plate.






Collaborative International Dictionary of English 0.48







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