Regeneration of wideband speech
US8332210B2 · kind B2 · utility
31Cited by
35References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 10, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Oct 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for processing a narrowband speech signal comprising speech samples in a first range of frequencies. the method comprises: generating from the narrowband speech signal a highband speech signal in a second range of frequencies above the first range of frequencies; determining a pitch of the highband speech signal; using the pitch to generate a pitch-dependent tonality measure from samples of the highband speech signal; and filtering the speech samples using a gain factor derived from the tonality measure and selected to reduce the amplitude of harmonics in the highband speech signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.