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Telharmonium console by Thaddeus Cahill 1897. The Telharmonium (also known as the Dynamophone [1]) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. [2] [3] [4] The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. [5]
Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent american inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium. He studied the physics of music at Oberlin Conservatory in Oberlin, Ohio.
Simplified diagram of how a tonewheel works Goldschmidt tone wheel (1910), used as an early beat frequency oscillator. A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond organ and in telephony to generate audible signals such as ringing tone.
Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.
The first three Hornbostel Sachs numbers describe instruments that make sound from matter in its solid state. The fourth HS number describes instruments that make sound from matter in its gaseous state (air). The fifth HS number describes instruments that make sound from electricity and/or electrical energy.
Immediate source: The ‘Telharmonium’ or ‘Dynamophone’ Thaddeus Cahill, USA 1897. 120 Years of Electronic Music (120years.net). Date: 1907 (original file) Source: This file was derived from: Telharmonium - Scientific American 1907.png: Author: Telharmonium - Scientific American 1907.png: Unknown author; derivative work: Clusternote