Duration and vowel dynamics in the classification of tense-lax pairs of English high vowels

• 발행기관: 경희대학교 언어정보연구소
• 저자명: Hyun Jin Hwangbo
• 간행물 정보: 『언어연구』제43권 제2호, 535~562쪽, 전체 28쪽
• 주제분류: 인문학 > 언어학
• 파일형태: PDF
• 발행일자: 2026.06.30

국문 초록

This study examines which acoustic features best classify English high tense–lax vowel pairs, /i/–/ɪ/ and /u/– /ʊ/, in the Buckeye Corpus of conversational speech. The effectiveness of vowel duration and spectral cues is compared using random forest models, assessing both static midpoint measurements and dynamic formant trajectories. Results indicate that trajectory models outperform static models overall. When dynamic spectral information is unavailable, including duration significantly improves classification accuracy. Notably, duration and spectral dynamics contribute differently to classification depending on vowel pair: for the front pair (/i/–/ɪ/), the static model with duration is most efficient, whereas for the back pair (/u/–/ʊ/), dynamic spectral information is more important. These results demonstrate that classifying high tense–lax vowel pairs in English conversational speech relies on vowel-specific cue patterns.

목차

1. Introduction

2. Methods

3. Results

4. Discussion

5. Conclusion

References

키워드

tense-lax vowels vowel classification conversational speech duration vowel dynamics

참고문헌

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