INTERSPEECH 2012
13th Annual Conference of the International Speech Communication Association

Portland, OR, USA
September 9-13, 2012

Model-based Duration-Difference Approach on Accent Evaluation of L2 Learner

Chatchawarn Hansakunbuntheung, Ananlada Chotimongkol, Sumonmas Thatphithakkul, Patcharika Chootrakool

Speech and Audio Technology Laboratory, National Electronics and Computer Technology Center (NECTEC), Pathumthani, Thailand

This paper aims at using a model-based duration-difference approach to analyze L2 learners' duration-aspect accent, and, segmental duration characteristics. We use the durational differences deviated from native-English speech duration as an objective measure to evaluate the learner's timing characteristics. The use of model-based approach provides flexible evaluation without the need to collect any additional English reference speech. The proposed evaluation method was tested on English speech data uttered by native English speakers and Thainative English learners with different English-study experiences. The experimental results show speaker clusters grouped by English accents and L2 learners' English-study experiences. These results support the effectiveness of the proposed model-based objective evaluation.

Index Terms: speech timing, quantitative evaluation, second language

Full Paper

Bibliographic reference.  Hansakunbuntheung, Chatchawarn / Chotimongkol, Ananlada / Thatphithakkul, Sumonmas / Chootrakool, Patcharika (2012): "Model-based duration-difference approach on accent evaluation of L2 learner", In INTERSPEECH-2012, 719-722.