Automatic chord control circuit for electronic musical instruments
US4197777A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1976 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Dec 29, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H1/386
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.