Automatic rhythm apparatus with tone level dependent timbres
US4713996A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Tones of percussion instruments produce different timbres, i.e. different tone waveshapes, depending on the strength of percussion. An automatic rhythm apparatus includes a rhythm tone generating unit which stores the tone waveshape produced from a hard percussion and also that from a soft percussion performed on a same percussion instrument. A rhythm pattern is constructed by rhythmically aligned tone command signals, for various percussion instruments, designating timings and volumes of tones to be produced. At each tone production, these two kinds of waveshapes are read out by mixing them appropriately. That is, when a loud tone is to be reproduced, its waveshape is read out from the waveshape memory for loud tones, while a soft tone is read out likewise from the waveshape memory for soft tones, and a tone of an intermediate volume therebetween is reproduced by reading out the loud tone and the soft tone at a mixing ratio complying to the desired degree of volume. Percussion tones from a same percussion instrument are thus read out throughout the loud-to-soft range in successive variations in compliance to the actual percussions played on the instrument. Accordingly, the reprodu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.