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Audion Piano - Engineering and Technology History Wiki
https://ethw.org/Audion_Piano
De Forest Lee De Forest, inventor of the triode electron tube, the Audion, also invented one of the first electronic musical instruments, the Audion piano. Invented in 1915, De Forest’s simple keyboard instrument used electron tubes in circuits called “oscillators,” which produced electromagnetic waves at a particular frequency.
Audión piano - Wikipedia, la enciclopedia libre
https://es.wikipedia.org/wiki/Audi%C3%B3n_piano
Audión piano - Wikipedia, la enciclopedia libre Audión piano Audión piano es el primer instrumento musical electrónico de tubo de vacío, creado, en 1915, por Lee de Forest . El audio piano utilizaba una sola válvula de triodo, capaz de alimentar todo un sistema de llaves (una por octava ), que eran controladas por un teclado simple.
Piano audion - Audión piano - second.wiki
https://second.wiki/wiki/audic3b3n_piano
Audion piano is the first electronic musical instrument of vacuum tube , created in 1915 by Lee de Forest . The piano audio using a single valve of triode , powering a system of keys (one per octave ), which were controlled by a keyboard simple.
Audion Piano - Wikiwand
https://www.wikiwand.com/pl/Audion_Piano
Audion Piano - Wikiwand Audion Piano – instrument muzyczny z grupy elektrofonów elektromechanicznych wynaleziony przez amerykańskiego wynalazcę Lee De Foresta w 1915 na uboczu jego prac nad techniką radiową.
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