Musical tone-generating method and apparatus using data interpolation
US5850049A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1996 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Dec 17, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/635
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A musical tone-generating method and apparatus therefor are provided. Musical tones are generated by reading waveform data from a waveform table at a predetermined sampling frequency and carrying out arithmetic operations on the waveform data read from the waveform table to generate musical tone waveform samples, by the use of a processing unit. A first sampling frequency or a second sampling frequency lower than the first sampling frequency is selected as the predetermined sampling frequency. Interpolation of the waveform data read from the waveform table is effected by a second interpolation method which is lower in accuracy than a first interpolation method employed when the first sampling frequency is used, or alternatively the interpolation is inhibited, when the second sampling frequency is selected as the predetermined sampling frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.