Quality assessment tool
US7406419B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2004 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Jul 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to a new parameter suitable for use in non-intrusive speech quality assessment system. The invention provides a method of generating a parameter from a signal comprising a sequence of values measured from voiced portions of said signal at a sampling frequency, said parameter suitable for use in a quality assessment tool. The method includes steps of selecting portions of frequency transformed sections of the signal in dependence upon a pitch estimate; generating an average value for each portion; and generating a section parameter depending upon the difference between the averages of successive portions. Said section parameter is averaged over a number of iterations of the method to generate the new parameter of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.