Automatic chord control circuit for electronic musical instrumen

Details Automatic chord control circuit for electronic musical instrumen Automatic chord control circuit for electronic musical instrumen

1976-12-29

1980-04-15

Weldon, Ulysses

Music

Instruments

84 117, 84 124, 84 101, G10F 100

Patent

active

041977777

ABSTRACT:
An automatic chord control system is readily incorporated in an electronic organ by means of large scale integrated circuit chips. The automatic chord control causes a chord or group of notes within an octave played on the lower manual keyboard to play through the upper manual voice in the octave below the lowest melody note being played on the upper manual keyboard. The proposed automatic chord control system has two operating modes. In the first mode, the notes transferred to the upper manual are generated in direct correspondence to the keys activated on the lower manual. In the second mode, the notes transferred to the upper manual are generated by a set of preset chords activated by single lower manual keys.

REFERENCES:
patent: 3247310 (1966-04-01), Stinson
patent: 3823246 (1974-07-01), Hebeisen et al.
patent: 3844192 (1974-10-01), Brand et al.
patent: 3871262 (1975-03-01), Robinson et al.
patent: 3889568 (1975-06-01), Amaya
patent: 3908502 (1975-09-01), Kidd et al.
patent: 3929051 (1975-12-01), Moore
patent: 3990339 (1976-11-01), Robinson et al.
patent: 4019417 (1977-04-01), Carlson

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