Phonautograph - Law Dictionary Search Results
Home Dictionary Name: phonautographGramophone
An instrument for recording preserving and reproducing sounds the record being a tracing of a phonautograph etched in some solid material Reproduction is accomplished by means of a system attached to an elastic diaphragm This older term is almost completely replaced for modern devices by the word phonograph or hi fi and technological changes have made the term sound antiquated and it is usually used to refer to older non electronic versions of the phonograph...
Phonautograph
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...
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