Analysis of the phone level contributions to objective evaluation of english speech by non-natives

Yasuo Suzuki, Makiko Muto, Katsuhiko Shirai, Yoshinori Sagisaka

研究成果: Paper査読

抄録

Aiming at automatic estimation of naturalness in timing control of non-native's speech, we have analyzed the timing characteristics of non-native's speech to correlate with corresponding subjective naturalness evaluation scores given by native speakers. In addition to word level statistical characteristics showing the differences between natives and non-natives, we analyzed phone and syllable level statistics to attain an objective measure better fit to natives' judgments. An English speech corpus spoken by Japanese was collected with temporal naturalness judgments by natives. The analysis results showed that timing differences between natives and non-natives in average syllable durations, weak vowel durations and vowel duration of function words were highly correlated with natives' naturalness evaluations. A liner regression model and a regression tree model were employed to estimate naturalness evaluation score from differences between native's speech and non-natives one. The proposed naturalness evaluation model was tested its estimation accuracy using open data. The root mean square errors between predicted scores by the two models and scores given by the natives turned out to be 0.63 and 0.66 comparable to the differences 0.70 of scores among native listeners respectively. These accuracies were better than one estimated by the model using word statistics only.

本文言語English
ページ1673-1676
ページ数4
出版ステータスPublished - 2004
外部発表はい
イベント8th International Conference on Spoken Language Processing, ICSLP 2004 - Jeju, Jeju Island, Korea, Republic of
継続期間: 2004 10月 42004 10月 8

Other

Other8th International Conference on Spoken Language Processing, ICSLP 2004
国/地域Korea, Republic of
CityJeju, Jeju Island
Period04/10/404/10/8

ASJC Scopus subject areas

  • 言語および言語学
  • 言語学および言語

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