Electronic musical instrument having octave slide effect
US4080862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Aug 23, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H7/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An electronic musical instrument wherein, by merely depressing one key, the tone pitch corresponding to that key varies periodically with cyclic repetition at a specific rate. The pitch variation is made on the octave basis by periodically shifting digits of binary signals of plural bits which designate readout addresses of a musical tone waveform. Various patterns of the pitch variation can be obtained by suitably setting a pattern of shifting of the digits of the binary signals. The patterns include an "up mode" in which the pitch slides successively toward higher pitches one octave interval at a time and then, upon reaching a predetermined octave, immediately returns to the original pitch and subsequently the same operation is repeated, and a "turn mode" in which the pitch slides successively toward higher pitches one octave interval at a time and, upon reaching a predetermined octave, slides successively in the reverse direction until it returns to the original pitch and subsequently the same operation is repeated. The patterns further include a "jump mode" in which, when a plurality of keys are successively depressed, the pitches of the succeedingly depressed keys slide in con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.