Apparatus and method for speech recognition using...

Details Apparatus and method for speech recognition using... Apparatus and method for speech recognition using...

2011-04-05

2011-04-05

Jackson, Jakieda R (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S240000

Reexamination Certificate

active

07921012

ABSTRACT:
A speech recognition apparatus includes a first storing unit configured to store a first acoustic model invariable regardless of speaker and environment, a second storing unit configured to store a classification model that has shared parameters and non-shared parameters with the first acoustic model to classify second acoustic models, a recognizing unit configured to calculate a first likelihood with regard to the input speech by applying the first acoustic model to the input speech and obtain calculation result on the shared parameter and a plurality of candidate words that have relatively large values as the first likelihood, and a calculating unit configured to calculate a second likelihood for each of the groups with regard to the input speech by use of the calculation result on the shared parameters and the non-shared parameters of the classification model.

REFERENCES:
patent: 5835890 (1998-11-01), Matsui et al.
patent: 7720683 (2010-05-01), Vermeulen et al.
patent: 2005/0216266 (2005-09-01), Gong et al.
patent: 3176210 (1995-10-01), None
patent: 2004-117624 (2004-04-01), None
Seiichi Nakagawa, “Voice Recognition Using Probablity Model”, Published by the Institute for Electronics, Information, and Communication Engineers, 1988. Statement of relevance provided in the specification.
Kiyoshiro Shikano et al., “Speech Recognition System”, published by Ohmsha, 1988. Statement of relevance provided in the specification.

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