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All Journal Jurnal Ilmiah Bina Bahasa JOLLT Journal of Languages and Language Teaching
Azzahro, Nursyifa
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Humanities Education Languange, Linguistic, Communication & Media

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MONOFTONGISASI DIFTONG DALAM FONOLOGI BAHASA JEPANG: ANALISIS POLA BUNYI DALAM KONTEKS PENGGUNAAN SEHARI-HARI Azzahro, Nursyifa
Jurnal Ilmiah Bina Bahasa Vol 17 No 1 (2024): Jurnal Ilmiah Bina Bahasa
Publisher : Direktorat Riset dan Pengabdian kepada Masyarakat, Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33557/binabahasa.v17i1.3054

Abstract

The phenomenon of diphthong monophthongization is a phonological change that frequently occurs in everyday context and is worthy of further investigation. This qualitative descriptive study examined the phenomenon of diphthong monophongization in Japanese everyday usage. Employing the matching method and basic elemental sorting techniques, the study was analyzed using a generative transformation theory begun with the categorization of distinctive features. The objective of this study is to comprehend the alteration in the phonetic qualities of diphthongs [ei], [oɯ], and [ai] that undergo monophontongization in everyday language usage, as well as their positioning within syllables. The findings of the research indicated that diphthongs [ei] tend to monophontongize to [ee] exclusively at the end of syllables. In the contrast, the monophthongization of the diphthong [oɯ] occurs at the beginning, middle, and the end of syllables, whereas the monophtongization of the diphthong [ai] is complete and occurs only at the end of syllables.
Diphtong Monophtongization in Japanese Loanwoards: An Acoustic and Sociolinguistic Analysis of Language Contact Effects Azzahro, Nursyifa; Rohmah, Naelul; Dewi, Mauldina Permata; Febrianti, Alvyna
JOLLT Journal of Languages and Language Teaching Vol. 14 No. 2 (2026): April
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jollt.v14i2.18880

Abstract

This study explores the monophthongization of diphthongs in Japanese loanwords, with a particular focus on the role of foreign language contact. Previous studies have failed to integrate acoustic evidence with sociolinguistic perception in explaining phonological adaptation in Japanese loanwards. This study fills this gap by integrating acoustic phonetic analysis and sociolinguistic perspectives. The dataset consists of 50 Japanese loanwords containing diphthongs (/ai/, /ei/, /oi/, /au/, /ou/), produced by 50 native speakers from two age groups (18–35 and 36–70). A total of 2,500 audio tokens were collected and analyzed using Praat to observe vowel duration and formant transitions. In addition, a perception survey was conducted to assess speakers' attitudes toward monophthongization. The findings indicate a systematic shift from dynamic vowel sequences toward stable long vowel nuclei, suggesting that Japanese speakers are not merely simplifying articulation but restructuring diphthongal sequences into phonologically unified segments. These findings challenge the traditional assumption that Japanese preserves vowel sequences without significant restructuring, suggesting instead that loanward phonology actively reshapes vowel organization under contact pressure. Sociolinguistic results show diverse perceptions: some consider this process natural, while others see it as an impact of media and globalization. The generational differences observed in this stud suggest that monophthongization is not a completed change but a stratified variation, where competing phonetic norms coexist across age groups. This study contributes to the understanding of sound changes in Japanese, supports language education, and provides a curated phonetic dataset for future linguistic and speech technology research.
Co-Authors Dewi, Mauldina Permata Febrianti, Alvyna Rohmah, Naelul