Transmission error concealment in audio signal
US8239192B2 · kind B2 · utility
11Cited by
11References
17Claims
0Family size
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Key dates
| Filing date | Aug 7, 2009 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of concealing transmission error in a digital audio signal, wherein a signal that has been decoded after transmission is received, the samples decoded while the transmitted data is valid are stored, at least one short-term prediction operator and one long-term prediction operator are estimated as a function of stored valid samples, and any missing or erroneous samples in the decoder signal are generated using the estimated operators. The energy of the synthesized signal that is thus generated is controlled by means of a gain that is computed and adapted sample by sample.
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