Music – Instruments
Patent
1981-04-13
1983-03-01
Witkowski, Stanley J.
Music
Instruments
84DIG12, G10H 142, G10H 500
Patent
active
043751776
ABSTRACT:
An automatic electronic musical instrument generates structured and pleasing musical sound patterns from a random sequence. One phase of the random sequence is supplied to a first shift register. A first plurality of outputs from the first shift register is used to control a rhythm oscillator. A second plurality of outputs from the first shift register is used to control a pitch oscillator. A second shift register receives a second phase of the random sequence and the rhythm signal produced by the rhythm oscillator. A programmed control input provides a song structure to the outputs of the second shift register. The outputs of the second shift register are supplied as inputs to a musical frequency generating means which has the capability of transforming dissonant frequency combinations otherwise selected by those inputs to compatible frequency combinations. The musical frequency generating means also receives the pitch signal from the pitch oscillator. Use of two shift registers in this manner imposes sufficient repetition and structure on random inputs to produce pleasing melodies. If desired, a third shift register may receive a third phase of the random sequence to generate accompaniment chords for the melodies so produced.
REFERENCES:
patent: 4208938 (1980-06-01), Kondo
Caplan Julian
Gustafson Douglas
Higgins Willis E.
Larson John
Witkowski Stanley J.
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