Technique for parametric coding of a signal containing information
US6539357B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/03
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a communications system, parametric coding in accordance with the invention is implemented to generate a representation of a stereo audio signal, which is composed of a left channel signal (L) and a right channel signal (R). To efficiently utilize transmission bandwidth, such a representation contains (1) information concerning only one of the L and R signals, and (2) parametric information based on which, together with (1), the other signal can be recovered. Because of the design of the parametric coding, the representation advantageously captures localization cues of the stereo audio signal, including intensity and phase characteristics of L and R. As a result, the stereo audio signal recovered from the transmitted representation affords a high stereo quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.