Method and an apparatus for processing a signal using length-adjusted window
US8504377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2008 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jul 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8133
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of processing a signal is disclosed. The present invention includes receiving at least one of a first signal and a second signal, obtaining mode information and modification flag information indicating whether the first signal is modified, if it is determined as an audio coding scheme according to the mode information, decoding the first signal by the audio coding scheme, if the first signal is modified based on the modification flag information, reconstructing the first signal by applying modification reconstruction information to the first signal, determining an extension base signal corresponding to a partial region of the first signal based on extension information, and generating an extended downmix signal having a bandwidth extended by reconstructing a high frequency region signal using the extension base signal and the extension information. According to a signal processing method and apparatus of the present invention, after a first signal has been decoded by a first coding scheme, the first signal is adjusted using modification reconstruction information for reconstructing the first signal modified in time domain in performing encoding. Therefore, a coding efficie…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.