Music – Instruments
Patent
1978-03-15
1981-06-09
Truhe, J. V.
Music
Instruments
84DIG12, 84 124, G10F 100
Patent
active
042717418
ABSTRACT:
An accompaniment system for an electronic musical instrument is selectively actuatable for producing accompaniment effects such as arpeggio in accordance with selectable notes or chords and with selectable rhythm patterns. The electronic musical instrument includes one or more conventional keyboards, a set of chord switches for selecting one of a plurality of predetermined chords and a set of rhythm switches for selecting one of a plurality of predetermined rhythm patterns, respectively. The accompaniment system includes a ROM containing note position signals arranged in a plurality of groups, each group corresponding to one of the selectable rhythm patterns. An electronic circuit selects one of the groups in response to activation of one of the rhythm pattern selector switches and sequentially combines each note position signal in the group with a chord displacement signal developed in response to actuation of one of the keyboard notes or chord selection switches. The electronic circuit then produces electronic signals corresponding to selected notes of the chromatic scale in accordance with the selected note or chord and rhythm pattern. The ROM further contains a note decay characteristic control signal associated with each of the note signals. The accompaniment system also includes another electronic circuit responsive to the electronic note signals and their associated note decay signals for directing the electronic musical instrument to sound notes to produce an accompaniment effect in accordance with the selected note or chord, with the selected rhythm pattern and with the predetermined decay characteristics of each note.
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McGraw-Hill, Dictionary of Scientific and Technical Terms, 1976, p. 1228.
Hoskinson William R.
Machanian William V.
Solender Peter E.
Isen Forester W.
The Wurlitzer Company
Truhe J. V.
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