Multichannel signal encoding method, its decoding method, devices for these, program, and its recording medium
US7733973B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 17, 2005 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | May 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An object of the present invention is to efficiently perform weighted difference coding of two or more signals. Determination is made as to which of independent coding and weighted difference coding is to be used for each channel so that the total energy of the channel signals and weighted difference signals is minimized. A weighted difference signal is generated on the basis of the determination and a reference signal (parent) and a weight is generated as auxiliary codes, the difference signal is treated as an input channel signal, and the process of coding determination and difference signal and auxiliary code generation is repeated. The difference signal generated at the last iteration of the process and a signal to be coded by independent coding are compressive coded and the auxiliary codes generated at the iterations of the process are coded and outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.