Methods and apparatus for post-processing of speech signals
US8175866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Feb 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for post-processing of speech signals includes using a pitch correction filter, a pitch weight parameter adjustor, and a first pitch enhancement filter to process the input signal into a first output signal; summing both the input signal and the first output signal as a second output signal; and using a second pitch enhancement filter to process the second output signal. Furthermore, another method for post-processing of speech signals includes using a second pitch enhancement filter to process the input signal into a second output signal; using a pitch correction filter, a pitch weight parameter adjustor, and a first pitch enhancement filter to process the second output signal into a first output signal; and summing both the second output signal and the first output signal as a final output signal. The two methods can simultaneously realize pitch emphasis and enhancement with low computation complexity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.