![]() The Dynabeat was an early solid state transistor based drum machine that was played via pads or a keyboard rather then the usual pre-set rhythms. Schober Dynabeat, top view showing small percussion pads Schober Dynabeat drum synthesiser Schober under Dorf’s supervision continued to develop electronic organ kits – starting in 1954 with valve based organs and moving to transistor organs in the mid 1960s – as well as various peripherals such as the Schober Tunesmith (1969), The Dynabeat drum machine (1968) and various tape echo units and stroboscopic tuning devices. A foot operated ‘expression pedal’ allowed the player control over the Thyratone’s output envelope. Thyratone tone unit and amplifier circuit diagramĭorf designed as a miniature pipe organ, with familiar stop -based controls for timbre, pitch and vibrato (from another neon tube ‘LFO’) essentially preset setting for the tone filters and vibrato. The keyboard could be attached to the host-piano keyboard using metal brackets and connected to the Thyratone’s tone generator box, amplifier and loudspeaker via a cable. The Thyratone was powered by a three octave keyboard with a single sawtooth oscillator for each octave and a series of filters and vibrato effects to colour the tone. designed as a conventional piano extension. The device was a simple, compact monophonic neon/thyratone vacuum tube instrument similar to the Hammond Solovox and Clavioline family of instruments i.e. The Thyratone’s seperate tone and amplifier unit In 1945 Dorf patented the Thyratone which was also supplied in kit form or simply as a circuit diagram and again, in terms of circuitry and filter formant construction, used a design inspired by Winston Kock’s Baldwin Organ . Dorf (b d New York, 21 June 1989) was an electronic engineer, prolific author on the subject of vacuum tube electronics and electronic organs, and the head of the Schober Organ Corporation – a supplier of self-build electronic organ kits (using patents licensed from Baldwin organ Co.). ![]() The keyboard of Richard H Dorf’s ‘Thyratone’ 1961: DIMI & Helsinki Electronic Music Studio.1931: Radio Organ of a Trillion Tones, Polytone Organ & Singing Keyboard.'Sound-Producing Device' Melvin Linwood Severy, USA.The 'Electronic Keyboard Oboe', 'the Elastic Tuning Organ' and 'Electronic Keyboard Drum'.The Wurlitzer 'Side Man' Rudolph Wurlitzer Company, USA, 1959.The 'Choralcelo' Melvin Linwood Severy & George.B.The 'Subharchord', Gerhard Steinke & Ernst Schreiber, Germany (DDR), 1960.The 'Ether Wave Violin' or 'Aetherwellengeige' Erich Zitzmann-Zirini, Germany 1934.the 'Clavier à Lampe' (1927), 'Automatic Electrical Musical Instrument' (1929) and 'Orgue Radioélectrique'.The 'Orgue des Ondes' Armand Givelet & Edouard Eloi Coupleux, France.The 'Musical Telegraph' or 'Electro-Harmonic Telegraph', Elisha Gray.
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