Patent · US Active

Apparatus and method for applying pitch features in automatic speech recognition

US9076436B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignee

Kabushiki Kaisha Toshiba · JP

Inventors

Pei Ding · Beijing, CN
Liqiang HE · Lo Wu, CN

Key dates

Filing date	Mar 28, 2013
Grant date	Jul 7, 2015
Priority date	—
Expiry date	Mar 28, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/93
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

According to one embodiment, an apparatus for applying pitch features in automatic speech recognition is provided. The apparatus includes a distribution evaluation module, normalization module, and random value adjusting module. The distribution evaluation module evaluates the global distribution of pitch features of voiced frames in speech signals, and the global distribution of random values for unvoiced frames in speech signals. The normalization module normalizes the global distribution of random values for unvoiced frames based on the global distribution of pitch features of voiced frames. The random value adjusting module adjusts random values for unvoiced frames based on the normalized global distribution, so that the adjusted random values can be assigned to unvoiced frames in speech signals as pitch features of the unvoiced frames.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.