Speech-quality assessment method and apparatus that identifies part of a signal not generated by human tract
US8682650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Dec 13, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Non-intrusive speech-quality assessment uses vocal-tract models, in particular for testing telecommunications systems and equipment. This process requires reduction of the speech stream under assessment into a set of parameters that are sensitive to the types of distortion to be assessed. Once parameterized, the data is used to generate a set of physiologically-based rules for error identification, using a parametric modeling of the shape of the vocal tract itself, by comparison between derived parameters and the output of models of physiologically realistic forms for the vocal tract, and the application of physical constraints on how these can change over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.