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원어민 및 외국인 화자의 음성 인식을 위한 심층 신경망 기반 음향 모델링
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- Authors
- 강병옥, 권오욱
- Issue Date
- 2017-06
- Citation
- 말소리와 음성과학, v.9, no.2, pp.95-101
- ISSN
- 2005-8063
- Language
- Korean
- Type
- Journal Article
- Project Code
- 17HS5700, Core technology development of the spontaneous speech dialogue processing for the language learning, Lee Yunkeun
- Abstract
- This paper proposes a new method to train Deep Neural Network (DNN)-based acoustic models for speech recognition of native and foreign speakers. The proposed method consists of determining multi-set state clusters with various acoustic properties, training a DNN-based acoustic model, and recognizing speech based on the model. In the proposed method, hidden nodes of DNN are shared, but output nodes are separated to accommodate different acoustic properties for native and foreign speech. In an English speech recognition task for speakers of Korean and English respectively, the proposed method is shown to slightly improve recognition accuracy compared to the conventional multi-condition training method.