Encoding device decoding device
US7283967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Mar 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An encoding device (100) includes (i) a first encoding unit (132) that encodes spectral data in the lower frequency band represented by a plularity of parameters, out of the spectral data obtained by transforming an audio signal inputted for a fixed time length, (ii) a second quantizing unit (133) that generates sub information representing characteristics of the spectral data in the higher frequency by fewer parameters than those for the lower frequency band, out of the spectral data obtained by the transformation, (iii) a second encoding unit (134) that encodes the generated sub information, and (iv) a stream output unit (140) that outputs the data encoded by the first encoding unit (132) and the data encoded by the second encoding unit (134).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.