Methods for improving high frequency reconstruction
US7469206B2 · kind B2 · utility
73Cited by
9References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 28, 2002 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Dec 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism (703a) on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded (703b) and sent to the decoder, where it is combined with the output of the HFR unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.