Waveshape memory type electronic musical instrument
US4133242A · kind A · utility
27Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1977 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Mar 2, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H1/053
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A waveshape memory type electronic musical instrument produces a tone signal by cyclically reading wave value samples of a tone waveshape stored in a waveshape memory. The electronic musical instrument comprises a function generator for generating a periodic function signal which includes the mathematical product of an amplitude term varying as a function of time and a cyclic term of a selected frequency, and a multiplier for modulating a part of the tone waveshape by the periodic function signal, thereby producing a musical tone signal changing in waveshape as time lapses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.