Electronic musical instrument providing chord tones in just intonation
US4248119A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Nov 9, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An electronic musical instrument of a digital processing type comprises a first ROM storing frequency information corresponding to respective notes for producing tones with pitches of the equally tempered scale, a second ROM storing correction data for the frequency information to shift the pitch to bring to just intonation relationship, a chord detector for identifying the root note, and a pitch adjusting circuit for modifying the frequency information of the chord constituent notes other than the root note in accordance with the correction data read out from the second ROM. Thus the tones are produced in just intonation relationship when they constitute a chord and otherwise in a normal equally tempered scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.