Perception of vowel devoicing In Talwanese Japanese learners The effect of mora and J apanese proficlency

[[abstract]]在日語語音研究領域中，研究母音無聲化現象如今已蔚為風潮。在這一片母音無聲化研究的風潮中，尤其缺乏有關台灣人日語學習者（以下簡稱「學習者」）的研究文獻。然而，在語音學習過程中，通常是先意識到特定的語音特徵，然後才能掌握發音技巧。因此，從知覺的角度來理解母音無聲化現象是第二語言學習中不可或缺的一環。本研究設定典型的母音無聲化環境為語音條件，藉由聽覺實驗來了解台灣人日語學習者對母音無聲化的知覺能力。並探討拍數及日語能力的不同，是否對學習者的母音無聲化知覺能力產生影響。結果我們發現，拍數的多寡的確和無聲化的知覺能力息息相關。尤其是對四拍以上的語音中的無聲化，不論學習者的日語能力程度是好是壞，對無聲化的知覺皆變得遲鈍。這說明了為何在一般發話行為中，學習者無法明確意識到母音無聲化的存在的原因。此外我們還發現，雖然日語能力好的學習者對無聲化的辨識能力佳，但並非如日語能力檢定所分級般地循序漸進。唯一可以肯定的是，日語能力檢定一級合格的學習者，最能正確地意識母音無聲化的存在。[[abstract]]Japanese vowel devoîcing wbich was extremely neglected în the past,now îs being paid much attention. However, a concern of perception of vowel devoîcing in Taiwanese Japalllese learners (hereafter refers to as “ l eamers") 的a lack. This paper examines how learners perceive the devoiced vowel lîl and Iu! between the voiceless consonants . A perception test showed a significant effect of mora and Japanese proficiency. It was found that (1) rnora is the factor which effects the perception of vowel devoicing. (2) error rale of percelvmg devoîced vowels as 4 or more mora is higber. (3) learners at level 1 of the Japanese-Language Proficiency Test have the best ability to perceive vowel devoicing