Waveform interpolation speech coding apparatus and method for reducing complexity thereof
US7899667B2 · kind B2 · utility
1Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Apr 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A waveform interpolation speech coding apparatus and method for reducing complexity thereof are disclosed. The waveform interpolation speech coding apparatus includes: a waveform interpolation encoding unit for receiving a speech signal, calculating parameters for a waveform interpolation from the received speech signal, and quantizing the calculating parameters; and a realignment parameter calculating unit for restoring a characteristic waveform (CW) using the quantized parameter, calculating a realignment parameter that maximizes a cross-correlation among consecutive CWs for the restored CW.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.