Audio signal decoding device and audio signal encoding device
US7260541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2002 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Feb 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A decoding device is a decoding device that generates frequency spectral data from an inputted encoded audio data stream, and includes: a core decoding unit for decoding the inputted encoded data stream and generating lower frequency spectral data representing an audio signal; and an extended decoding unit for generating, based on the lower frequency spectral data, extended frequency spectral data indicating a harmonic structure, which is same as an extension along the frequency axis of the harmonic structure indicated by the lower frequency spectral data, in a frequency region which is not represented by the encoded data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.