- #Tone groups on hammond b3 tonegenerator generator#
- #Tone groups on hammond b3 tonegenerator series#
The same method was disclosed as early as 1921 by the French inventor Hugoniot, who described an electrical musical instrument of this type in his patent’Ī description of Hugoniot’s photo-electrical sound generation method from ‘Electronic Music and Instruments’ Institute of Radio Engineers, 1936īush, D., & Kassel, R. The slit spacing is precisely equal to the wave-form lengths, so that this wave form is repeated at the scanning frequency i.e., the number of slits passing it per second.
#Tone groups on hammond b3 tonegenerator series#
Here, instead of using a series of similar wave-form cycles on a continuous track, with a single scanning device, only one complete such cycle is used with periodic scanning by a series of similar scanning slits, equispaced on a continuous track. Naturally the lowest pitch tracks are nearest the center and the highest are nearest the circumference of the scanning disk.Īnother interesting arrangement is that used by Lesti and Sammis in the Polytone.
![tone groups on hammond b3 tonegenerator tone groups on hammond b3 tonegenerator](https://www.muzines.co.uk/images_mag/articles/emm/EMM_81_03_instrument_r_4_full.jpg)
Thus, one wave and one slit track serve for each tone frequency of the tempered scale. Each slit track scans its corresponding wave cycle at a speed corresponding to one pitch of an approximate tempered scale. A source of light and photocell complete the translating arrangements. With this scheme the various types of wave forms for different timbres may be placed in radial sectors on a disk another disk carrying the scanning slits in circular tracks rotates before this wave-form disk.
#Tone groups on hammond b3 tonegenerator generator#
Hugoniot’s patent for a photo-electrical sound generator August 1921 Hugoniot’s died in 1927 before he could develop his ideas any further than prototypes yet he left behind a legacy of innovation that influenced a new generation of French pioneering instrument designers including Pierre Toulon and Givelet & Coupleaux. The frequency (and speed of rotation) generated an electrical pulse from the photo-voltaic cell that equated to an octave pitch. The instrument was one of the first to use a photoelectric technique to generate sound: Hugoniot projected a light beam onto a selenium photo-voltaic cell through an array of 12 rotating discs cut with with concentric rings of radial slits.
![tone groups on hammond b3 tonegenerator tone groups on hammond b3 tonegenerator](http://wersiorganshowcase.com/wpimages/wp35d3e5c9_06.png)
Hugoniot Appears to have constructed only one instrument– a photo-electric organ described in his patent (FR550.370) In 1921. By doing so, Hugoniot introduced these new methods to a French group of electronic engineers. Starting in 1919, Hugoniot began a process of improving existing sound generation devices of the period, first Thaddeus Cahill’s electro-magnetic tone-wheels (from Cahill’s patent’s that would have been known to him in France) and continuing to electromagnetic steel discs and photo-electrical methods possibly influenced by the South African physicist, Hendrik van der Bijl’s patents from 1916. Hugoniot was awarded seven patents in France from 1919-1923 for various methods of sound generation including tone-wheels and photo-electrical tone generators. 1961: DIMI & Helsinki Electronic Music StudioĪ diagram from Hugoniot’s patent for a tone-wheel sound generator December 1919Ĭharles– Emile Hugoniot ( died France, 1927 ) was a French mechanic, researcher and inventor of early electronic musical instruments.1931: Radio Organ of a Trillion Tones, Polytone Organ & Singing Keyboard.'Photo-Electric Marimba' or 'Marimbalite'.'Clavecin Électrique' or 'Clavessin Électrique'.Freddie Williams & Tom Kilburn, United Kingdom, 1951.
![tone groups on hammond b3 tonegenerator tone groups on hammond b3 tonegenerator](https://modularsynthesis.com/hammond/m3/m3_twg.jpg)
The 'Singing Arc', William Duddell, UK, 1899.'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 'Clavier à Lampes' or 'Piano Radio Èlectrique' Joseph Armand Marie Givelet, France.