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91:. The basic principle of the valves used in these devices was to pass the stream of compressed air through two partially overlapping combs. The sound vibrations to be amplified were applied to one of the combs, causing it to move laterally in relation to the other comb, varying the degree of overlap and so altering the flow of compressed air in sympathy with the sound vibrations.
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explains pneumatic amplification and includes several detailed photographs of
Gaumont's Elgéphone, which was apparently a slightly later and more elaborate version of the Chronomégaphone.
67:, and was said to be loud enough to cause people to vacate the front rows of seats in an auditorium. The Auxetophone was sold in the United States as the
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was realised by using a sensitive valve, which required little force to operate, to modulate the flow of a stream of
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170:. PSU ASA: The Penn State Chapter of the Acoustical Society of America. Archived from
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220:"The Auxetophone & Other Compressed-Air Gramophones" Retrieved 19 June 2012
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102:, designed for large halls, was a compressed air gramophone which employed
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The compleat talking machine: a collector's guide to antique phonographs
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1908 poster advertising
Gaumont's sound films, showing a Chronomégaphone
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Wierzbicki (2009), p. 74; "Representative
Kinematograph Shows" (1907).
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http://www.douglas-self.com/MUSEUM/COMMS/auxetophone/auxetoph.htm
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and a pneumatic amplifier to amplify the recorded sound.
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301:. Christian-Albrechts-Universität zu Kiel. 2 March 2012
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117:Other compressed-air gramophones included the
106:to amplify the recorded sound. It was used by
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142:. Chandler, Ariz: Sonoran Pub. p. 217.
110:for the presentation of some of their early
59:, designed by the Anglo-Irish engineer Sir
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325:Auxetophone and Compressed-air Gramophones
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168:"More Defunct Technology: The Auxetophone"
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277:"Gaumont Treasures, Vol. 2 (1908-1916)"
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299:"Lexikon der Filmbegriffe: Auxetophon"
279:. American Society of Cinematographers
51:One of the earliest versions was the
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351:. You can help Knowledge (XXG) by
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327:at Museum of RetroTechnology
233:. Montana Phonograph Company
196:. Montana Phonograph Company
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38:Compressed air gramophones
261:18 September 2010 at the
231:"1906 Victor Auxetophone"
194:"1906 Victor Auxetophone"
413:Sound technology stubs
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403:Mechanical amplifiers
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138:Reiss, Eric (2007).
83:pneumatic amplifier
75:Pneumatic Amplifier
174:on 30 January 2013
69:Victor Auxetophone
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311:(in German)
112:sound films
55:Auxetophone
42:gramophones
408:Pneumatics
392:Categories
125:References
119:Elgéphone
259:Archived
305:31 July
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108:Gaumont
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343:This
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