Speech coding system and method
US8069049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2007 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for enhancing a signal regenerated from an encoded audio signal. The system comprises a decoder arranged to receive the encoded audio signal and produce a decoded audio signal, a feature extraction means arranged to receive at least one of the decoded and encoded audio signal and extract at least one feature from at least one of the decoded and encoded audio signal, a mapping means arranged to map the at least one feature to an enhancement signal and operable to generate and output the enhancement signal, whereby the enhancement signal has a frequency band that is within the decoded audio signal frequency band, and a mixing means arranged to receive the decoded audio signal and the enhancement signal and mix the enhancement signal with the decoded audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.