Method for speech quality degradation estimation and method for degradation measures calculation and apparatuses thereof
US7801725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Dec 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for speech quality degradation estimation, a method for degradation measures calculation, and the apparatuses thereof are provided. The first method above estimates the speech quality of a speech signal that is modified by a pitch-synchronous prosody modification method, which comprises the following steps. First, extract at least one source pitchmark from the speech signal, and then maps the source pitchmark(s) to at least one target pitchmark(s). Finally, calculate at least one degradation measure based on the mapping between the source and the target pitchmarks. The degradation measures include several weighted pitch-related functions and duration-related functions, where the weighting functions can be calculated based on the speech signal or the pitchmark(s) mapping mentioned above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.