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AssigneeIndustrial Technology Research Institute
InventorsChih-Chung Kuo, Che-Yao Yang, Ke-Shiu Chen, Miao-Ru Hsu
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A method and system for pronunciation assessment based on distinctive feature analysis is provided. It evaluates a user's pronunciation by one or more distinctive feature (DF) assessor. It may further construct a phone assessor with DF assessors to evaluate a user's phone pronunciation, and even construct a continuous speech pronunciation assessor with phone assessor to get the final pronunciation score for a word or a sentence. Each DF assessor further includes a feature extractor and a distinctive feature classifier, and can be realized differently. This is based on the different characteristic of the distinctive feature. A score mapper may be included to standardize the output for each DF assessor. Each speech phone can be described as a “bundle” of DFs. The invention is a novel and qualitative solution based on the DF of speech sounds for pronunciation assessment.
A pronunciation assessment system for evaluating a user's pronunciation, said pronunciation assessment system comprising one or more distinctive feature assessors, each distinctive feature assessor including a feature extractor, and a distinctive feature classifier, and each said distinctive feature assessor being realized according to the different characteristic of each distinctive feature.
A pronunciation assessment method which evaluates a user's pronunciation, comprising a step of building one or more distinctive feature assessors by extracting suitable acoustic features for each specific distinctive feature, each said distinctive feature assessor being realized according to the different characteristic of each said distinctive feature.
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