Music – Instruments
Patent
1978-09-15
1982-01-26
Truhe, J. V.
Music
Instruments
84 124, 84DIG12, G10F 100
Patent
active
043122574
ABSTRACT:
An automatic accompaniment apparatus which has an auto-bass circuit and an auto-arpeggio circuit. In the auto-bass circuit, note information concerning one kind of code is stored in a memory (ROM), and a code signal is detected from depressed key information in a code detector, and in a note converter a note signal from the memory is converted by the code signal to a note signal corresponding to the kind of code, whereby note signals of various kinds of codes are generated. In the auto-arpeggio circuit, note information concerning one kind of code is stored in a memory (ROM), and a code signal is detected from depressed key information in a code detector, and in a note converter a note signal from the memory is converted by the code signal to a note signal corresponding to the kind of code. The note signal is added with a root signal from the code detector, and by the added output, a scale signal is selectively obtained, which scale signal is frequency divided by an octave signal from the memory. Thus, various kinds of codes ranging over several octaves are obtained.
REFERENCES:
patent: 3854365 (1974-12-01), Tomisawa et al.
patent: 3894463 (1975-07-01), Rocheleau
patent: 3906830 (1975-09-01), Mathias
patent: 4074233 (1978-02-01), Swain
patent: 4112802 (1978-09-01), Robinson et al.
patent: 4120225 (1978-10-01), Dietrich
patent: 4138916 (1979-02-01), Kitagawa
Kato Hiroshi
Tanaka Kohji
Isen Forester W.
Kabushiki Kaisha Kawai Gakki Seisakusho
Truhe J. V.
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