Music – Instruments
Patent
1976-04-12
1979-02-20
Schaefer, Robert K.
Music
Instruments
84DIG7, 84DIG22, G10H 100
Patent
active
041400399
ABSTRACT:
A sophisticated polyphonic instrument providing both additive and subtractive tone synthesis capabilities for generating a myriad of timbres, yet occupying a volume comparable to a toy accordion, is described. The unusually broad capabilities, for a small size synthesizer, is achieved through use of the novel LSI oriented circuits described in copending applications entitled "Electronic Organ With Multi-Pitch Note Generators", Ser. No. 610,733, filed Sept. 5, 1975, and "Automatic Arpeggio For Multiplexed Keyboard", Ser. No. 675,834, filed Apr. 12, 1976. The small size is made possible by use of LSI circuits in conjunction with a novel note keyboard arranged to select any note of the chromatic scale over a five octave range with only five keys, played by the right hand, and a novel chord keyboard, played by the left hand, arranged to select any one of ten chords based on the selected note as its root. The chord may be selected in its fundamental or either of two inverted forms. Since the position of the fingers relative to the chord keyboard cannot be easily seen, when the instrument is being held in the manner of an accordion, the chord buttons are grouped and shaped in a unique way that enables "playing blind" to be accomplished easily. To eliminate the need for modified fingering when transposing, provisions are described for changing keys rapidly using only the note keyboard.
REFERENCES:
patent: 3544693 (1970-12-01), Tripp
patent: 3624263 (1971-11-01), Uchiyama
patent: 3696201 (1972-10-01), Arsem et al.
patent: 3697661 (1972-10-01), Deutsch
patent: 3753007 (1973-08-01), Viswanathan
patent: 3771130 (1973-11-01), Moses
patent: 3806623 (1974-04-01), Tamada
patent: 3821712 (1974-06-01), Wetzel
patent: 3828108 (1974-08-01), Thompson
patent: 3844192 (1974-10-01), Brand et al.
patent: 3855894 (1974-12-01), Thomas et al.
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 3886543 (1975-05-01), Marin
patent: 3902393 (1975-09-01), Nagahama
patent: 3916750 (1975-11-01), Uetrecht
patent: 3929051 (1975-12-01), Moore
patent: 3930429 (1976-01-01), Hill
patent: 3935784 (1976-02-01), Koedice
patent: 3941023 (1976-03-01), Thomas et al.
patent: 3951028 (1976-04-01), Robinson
patent: 3954039 (1976-05-01), Southard
patent: 3954039 (1976-05-01), Southard
patent: 3990339 (1976-11-01), Robinson et al.
patent: 4012980 (1977-03-01), Suzuki
patent: 4019417 (1977-04-01), Carlson
patent: 4030398 (1977-06-01), Dittmar
patent: 4031797 (1977-06-01), Schmoyer
Miska Vit W.
Schaefer Robert K.
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