2011 Fiscal Year Final Research Report
Advancement of speech recognition technology using WFST
| Project/Area Number |
21300062
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Perception information processing/Intelligent robotics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SHINODA Koichi 東京工業大学, 大学院・情報理工学研究科, 准教授 (10343097)
SHINOZAKI Takahiro 千葉大学, 大学院・融合科学研究科, 助教 (80447903)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 音声情報処理 / 音声認識 / WFST / デコーダ |
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| Research Abstract |
With the aim of improving the performance of automatic speech recognition using the Weighted Finite State Transducer(WFST)-based decoder and developing new applications of the decoder, a wide range of research has been conducted and various achievements have been obtained. The world highest performance speech recognition decoder,"T^3 decoder", has been developed by improving the on-the-fly algorithm for the WFST decoder. Recognition performance under noisy environment has been improved by incorporating speech/non-speech information to the decoder. Various new techniques have been developed to apply the decoder to the recognition of resource-deficient languages and code-switching speech, and to transliteration. Innovative ideas have been proposed toward new directions of the decoder technology. T^3 decoder has been released to domestic as well as overseas research laboratories.
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