8th European Conference on Speech Communication and Technology

Geneva, Switzerland
September 1-4, 2003


Non-Native Spontaneous Speech Recognition Through Polyphone Decision Tree Specialization

Zhirong Wang, Tanja Schultz

Carnegie Mellon University, USA

With more and more non-native speakers speaking in English, the fast and efficient adaptation to non-native English speech becomes a practical concern. The performance of speech recognition systems is consistently poor on non-native speech. The challenge for non-native speech recognition is to maximize the recognition performance with small amount of non-native data available. In this paper we report on the effectiveness of using polyphone decision tree specialization method for non-native speech adaptation and recognition. Several recognition results are presented by using non-native speech from German speakers. Results obtained from the experiments demonstrate the feasibility of this method.

Full Paper

Bibliographic reference.  Wang, Zhirong / Schultz, Tanja (2003): "Non-native spontaneous speech recognition through polyphone decision tree specialization", In EUROSPEECH-2003, 1449-1452.