AEROPHONE
\ˈe͡əɹə͡ʊfˌə͡ʊn], \ˈeəɹəʊfˌəʊn], \ˈeə_ɹ_əʊ_f_ˌəʊ_n]\
Definitions of AEROPHONE
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An instrument, proposed by Edison, for greatly intensifying speech. It consists of a phonograph diaphragm so arranged that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration.
By Oddity Software
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An instrument, proposed by Edison, for greatly intensifying speech. It consists of a phonograph diaphragm so arranged that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration.
By Noah Webster.
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