Before they even talk, infants become sensitive to the speech sounds of their native language and recognize the auditory form of an increasing number of words. Traditionally, these early perceptual changes are attributed to an emerging knowledge of linguistic categories such as phonemes or words. However, there is growing skepticism surrounding…

In this study, we conduct a longitudinal experiment to explore the effects of adaptive phonetic training on the identification of the English vowels /i/ and /I/ by learners in China. The vowel /i/ in English has a low F1 value, a high F2 value, and a long duration. In contrast, the vowel /i/ has a high F1 value, a low F2 value, and a short…

This study investigates variations in English short vowel sounds and their correspondences within the context of Southern Thailand, focusing on how these variations may affect intelligibility and comprehensibility in spoken English. It also examines the interplay between speech perception and production, focusing on the impact of mother tongue…