Audio coding system using characteristics of a decoded signal to adapt synthesized spectral components
US7337118B2 · kind B2 · utility
40Cited by
25References
27Claims
0Family size
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Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Apr 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A receiver in an audio coding system receives a signal conveying frequency subband signals representing an audio signal. The subband signals are examined to assess one or more characteristics of the audio signal. Spectral components are synthesized having the assessed characteristics. The synthesized spectral components are integrated with the subband signals and passed through a synthesis filterbank to generate an output signal. In one implementation, the assessed characteristic is temporal shape and noise-like spectral components are synthesized having the temporal shape of the audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.