Wideband speech parameterization for high quality synthesis, transformation and quantization
US9224402B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Mar 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for speech parameterization and coding of a continuous speech signal. The method comprises dividing said speech signal into a plurality of speech frames, and for each one of the plurality of speech frames, modeling said speech frame by a first harmonic modeling to produce a plurality of harmonic model parameters, reconstructing an estimated frame signal from the plurality of harmonic model parameters, subtracting the estimated frame signal from the speech frame to produce a harmonic model residual, performing at least one second harmonic modeling analysis on the first harmonic model residual to determine at least one set of second harmonic model components, removing the at least one set of second harmonic model components from the first harmonic model residual to produce a harmonically-filtered residual signal, and processing the harmonically-filtered residual signal with analysis by synthesis techniques to produce vectors of codebook indices and corresponding gains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.