Device and method for processing tone data by controlling sampling rate
US7039477B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2230/041
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
From a storage device storing waveform sample data sampled at a given sampling rate, the waveform sample data are read out asynchronously with the given sampling rate and temporarily stored in an input buffer. The thus-stored waveform sample data are read out from the input buffer and converted to an inner sampling rate selected from among a plurality of predetermined inner sampling rates. Predetermined arithmetic processing is performed on the waveform sample data converted to the selected inner sampling rate. Then, the waveform sample data having undergone the predetermined arithmetic processing are converted to a predetermined output sampling rate and written into an output buffer. The thus-written waveform sample data are then sequentially read out at an sampling frequency corresponding to the output sampling rate, to thereby generate tone data in accordance with the output sampling frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.