Telharmonium
Videos
The Telharmonium was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. The electrical signal from the Telharmonium was transmitted over wires; it was heard on the r
Telharmonium console by Thaddeus Cahill, 1897
The workshop console of the telharmonium during its development at the New England Electric Music Company's Cabot Street Music Plant, in Holyoke, 1906.
Tonewheel
Videos
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 genera
Telharmonium
…Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. Like the later Hammond organ, the Telharmonium used tonewheels to generate musical sounds as electrical signals by additive synthesis. It is considered to be the first electromechanical musical instrument. 1809…
Goldschmidt tone wheel (1910), used as an early beat frequency oscillator
Rheotome-cylinders and electric-brushes used on Telharmonium (1896)