Coding and decoding system for speech and musical sound
US6101464A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0011
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A coding and decoding system includes a first filter for representing an input signal with first linear prediction coefficients indicative of a coarse spectral distribution of the input signal, a second filter for representing the input signal with second linear filter means connected in series with or parallel to the second filter for representing the input signal with third linear prediction coefficients indicative of a periodic component of the input signal. A coding and decoding of the input signal is performed on the basis of parameters of the input signal which is produced on the basis of a residual signal between the input signal and a reproduced signal obtained through the first, second and third filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.