Music – Instruments – Electrical musical tone generation
Patent
1987-02-10
1989-09-12
Grimley, A. T.
Music
Instruments
Electrical musical tone generation
84650, 84DIG22, 84715, G10F 100, G10H 138
Patent
active
048649074
ABSTRACT:
An electronic musical instrument having automatic bass chord accompaniment performance in which bass tones are generated in different manners depending on the state of the keyboards of the device. Chord and bass notes are selected using lower and pedal keyboards, respectively. The chord type and root note are identified from the depressed keys of the keyboards. The bass tone is generated with consideration of whether the identified root note coincides with the selected bass note. In the situation where the root note coincides with the bass note, a bass tone is generated based on a stored predetermined bass pattern corresponding to the particular chord type and root note identified. In the situation where the root note does not coincide with the bass note, or if a chord type has not been identified, a bass tone is generated based on the depressed bass note key.
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patent: 3795755 (1974-03-01), Uchiyama
patent: 4144788 (1979-03-01), Bione et al.
patent: 4184401 (1980-01-01), Hiyoshi et al.
patent: 4204453 (1980-05-01), Gross
patent: 4216692 (1980-08-01), Okuyama et al.
patent: 4381689 (1983-05-01), Oya
patent: 4472992 (1984-09-01), Okuma et al.
Grimley A. T.
Smith John G.
Yamaha Corporation
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