PHONAUTOGRAPH
\fˈɒnətˌɒɡɹaf], \fˈɒnətˌɒɡɹaf], \f_ˈɒ_n_ə_t_ˌɒ_ɡ_ɹ_a_f]\
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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.
By Oddity Software
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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.
By Noah Webster.
By Sir Augustus Henry
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Apparatus for registering vibrations caused by voice.
By Willam Alexander Newman Dorland
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Platidiam
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