Audio coding method based on spectral recovery scheme
US11508386B2 · kind B2 · utility
0Cited by
2References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 8, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Feb 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An inventive concept relates to an audio coding method to which CNN-based frequency spectrum recovery is applied. An inventive concept transmits a part of frequency spectral coefficients generated in transform coding to a decoder and the decoder recovers the frequency spectral coefficient not transmitted. Furthermore, the signs of frequency spectral coefficient are transmitted from an encoder to the decoder depending on a sign transmission rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.