ISCA Archive Interspeech 2009
ISCA Archive Interspeech 2009

Model-based automatic evaluation of L2 learner's English timing

Chatchawarn Hansakunbuntheung, Hiroaki Kato, Yoshinori Sagisaka

This paper proposes a method to automatically measure the timing characteristics of a second-language learner’s speech as a means to evaluate language proficiency in speech production. We used the durational differences from native speakers’ speech as an objective measure to evaluate the learner’s timing characteristics. To provide flexible evaluation without the need to collect any additional English reference speech, we employed predicted segmental durations using a statistical duration model instead of measured raw durations of natives’ speech. The proposed evaluation method was tested using English speech data uttered by Thai-native learners with different English-study experiences. An evaluation experiment shows that the proposed measure based on duration differences closely correlates to the subjects’ Englishstudy experiences. Moreover, segmental duration differences revealed Thai learners’ speech-control characteristics in word-final stress assignment. These results support the effectiveness of the proposed model-based objective evaluation.

doi: 10.21437/Interspeech.2009-42

Cite as: Hansakunbuntheung, C., Kato, H., Sagisaka, Y. (2009) Model-based automatic evaluation of L2 learner's English timing. Proc. Interspeech 2009, 2871-2874, doi: 10.21437/Interspeech.2009-42

  author={Chatchawarn Hansakunbuntheung and Hiroaki Kato and Yoshinori Sagisaka},
  title={{Model-based automatic evaluation of L2 learner's English timing}},
  booktitle={Proc. Interspeech 2009},