Electronic musical chord calculator
US4538501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1982 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Apr 7, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B15/002
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic musical chord calculator suitable for embodiment using integrated circuitry, has finger-actuatable devices for specifying notes (13) and chords (14). A display (11) has indicator devices (12) for each note of any chord to be specified. Logic circuitry (m21) serves to produce one chord automatically and immediately. Other logic circuitry (m21) serves to produce other chords by logic operations to add or substract notes relative to the basic chord. Other embodiments produce all required chords for one note automatically and immediately, then produce chords for other notes by shift operations (29) from the chords for the one note.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.