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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.
The cavity was a high-Q round silver-plated copper "can", with the internal diameter of 31 ⁄ 40 in (19.7 mm) and about 11 ⁄ 16 in (17.5 mm) long, with inductance of about 10 nanohenries. [5] Its front side was closed with a very thin (3 thou , or 75 micrometers) and fragile conductive membrane.
It had its International Premiere on June 21, 2024, in the Shorts –3 of Doc Edge Film Festival 2024. [9] [10] It had its Midwest premiere at the Indy Shorts Film Festival on 25 July 2024 in Music. [11] The film was made available for streaming on November 18, 2024 via YouTube and The New York Times Op-Docs. [12]
This image is a derivative work of the following image(s): File:Telharmonium - Scientific American 1907.png licensed with PD-US-1923. 2016-05-23 03:40 Techn0logist 1500x2143 (1606595 Bytes) {{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|The Telharmonium depicted on the front page of Scientific American.}} |Source = '''Original publication''': Scientific American...
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.