Support for generation of comfort noise, and generation of comfort noise
US11862181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Nov 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for generation of comfort noise for at least two audio channels. The method comprises determining a spatial coherence between audio signals on the respective audio channels, wherein at least one spatial coherence value per frame and frequency band is determined to form a vector of spatial coherence values. A vector of predicted spatial coherence values is formed by a weighted combination of a first coherence prediction and a second coherence prediction that are combined using a weight factor α. The method comprises signaling information about the weight factor α to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.