Penelitian ini bertujuan untuk mengetahui perubahan bunyi bahasa karena terjadinya interferensi fonetik penutur Bahasa Jepang terhadap penggunaan Bahasa Indonesia dalam channel youtube Yusuke [wasedaboys]. Penelitian yang dilakukan ini termasuk jenis penelitian yang menggunakan metode penelitian deskriptif kualitatif. Data yang diperoleh berasal dari tuturan Yusuke yang merupakan penutur bahasa pertamanya Bahasa Jepang saat menuturkan Bahasa Indonesia sesuai batasan masalah yang telah ditentukan oleh peneliti. Penelitian ini menggunakan metode agih dengan teknik bagi unsur langsung (BUL) dan menyajikan ciri distingtif bunyi bahasa sesuai data yang telah dikumpulkan. Hasil dari penelitian ini adalah terdapat 44 data yang mengalami interferensi bunyi bahasa perubahan bunyi [n] menjadi [m], perubahan bunyi [ǝ] menjadi [u], perubahan bunyi [a] menjadi [ǝ], perubahan bunyi [i] menjadi [Ɛ], perubahan bunyi [o] menjadi [u], pelesapan [u] dan [ǝ] ditengah kata, perubahan bunyi [ai] menjadi [e], perubahan akhiran bunyi [n] menjadi [ŋ], perubahan akhiran bunyi [ŋ] menjadi [m], penambahan bunyi vokal [ǝ] dan [u] diakhir kata setelah /r/, penambahan bunyi [h] diakhir setelah /a/, penambahan bunyi [u] dan [o] diakhir setelah /t/, penambahan
/g/ diantara /ŋ/ dengan vokal /a/, /e/ dan /u/, perubahan [au] menjadi [o], perubahan
[l] menjadi [r], perubahan [Ɛ] menjadi [a], penambahan [e] diakhir /s/, dan pelesapan bunyi /s/ diawal kata. Dalam penelitian ini dapat disimpulkan jenis perubahan bunyi bahasa pada data yang mengalami interferensi fonetik yaitu asimilasi, zeroisasi sinkop, paragog, epentesis, dan zeroisasi afresis.


Kata Kunci: Interferensi, Fitur Distingtif, Fonetik, Fonologi.

This study aims to determine the changes in language sounds due to the phonetic interference of Japanese speakers on the use of Indonesian in Yusuke's YouTube channel [wasedaboys]. The research conducted was a type of research that used descriptive qualitative research methods. The data obtained came from the speech of Yusuke who is a Japanese first language speaker when speaking Indonesian according to the problem boundaries determined by the researcher. This research used distributional (agih) method with direct element division technique (BUL) and presented the distinctive features of language sounds in accordance with the data that had been collected. The result of this study was that there were 44 data that experienced language sound interference, the change of sound [n] to [m], the change of sound [ə] to [u], the change of sound [a] to [ǝ], the change of sound [i] to [E], the change of sound [o] to [u], the omission of [u] and [ǝ] in the middle of the word, the change of sound [ai] to [e], the change of sound suffix [n] to [n], [n] to [m], addition of vowel sounds [e] and [u] at the end of the word after /r/, addition of sound [h] at the end after /a/, addition of sound [u] and [o] at the end after /t/, addition of /g/ between /n/ with vowels /a/, /e/ and /u̸/, change of [au] to [0], change of [1] to [r], change of [Ɛ] to [a], addition of [e] at the end of /s/, and deletion of /s/ sound at the beginning of the word. In this study, it can be concluded that the types of language sound changes in the data that experienced phonetic interference were assimilation, syncope zeroization, paragoge, epenthesis, and apheresis zeroization. Keywords: Interference, Distinctive Features, Phonetics, Phonology