Speech signal processing apparatus for amplifying an input signal based upon consonant features of the signal
US5583969A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1993 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Apr 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0364
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for processing a speech signal includes a coefficient calculating circuit for receiving an input signal, and for generating a first value for suppressing a change of level of the input signal; a first delay circuit for receiving the input signal, and for delaying the input signal by a predetermined time; a feature extracting circuit for receiving the input signal, and for deriving a feature value representing a feature of consonants from the input signal; a coefficient control circuit for receiving the first value from the coefficient calculating circuit and the feature value from the feature extracting circuit, and for changing the amplitude and the duration of the first value depending on the feature value, so as to generate a second value; a multiplying circuit for receiving the delayed input signal from the first delay circuit and the second value from the coefficient control circuit, and for multiplying the delayed input signal by the second value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.