- 2019 - 2025 日本語と韓国語の閉鎖音における音響的特徴とピッチアクセントの関係
- 2020 - 2023 Developmental Theory and Empirical Investigation of Public Language
- 2016 - 2021 Seeking the onset of infant speech development: An explanation of developmental mechanisms form the perspective of Asian languages
- 2016 - 2020 Sociolinguistic general studies about geographical differences of official language
- 2016 - 2020 An empirical study on the diachronic change of spoken Japanese through the construction of Showa Speech Corpus
- 2015 - 2019 Regional and generational variation of phonetic details in Japanese geminates.
- 2016 - 2017 乳児の音素獲得のメカニズムに迫る:アジアの4言語の対照研究
- 2013 - 2016 The New Approach to Study Dialect Distribution by Various Types of Dialect Materials
- 2011 - 2014 Regional and generational studies of phonetic variation in the Japanese Archipelago
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