Acoustic features influencing the perception of Japanese moraic-nasal (/N/) sounds : Concerning /N/ followed by vowels

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  • 撥音の知覚判断に影響を及ぼす音声的特徴 : 撥音に母音が後続する場合
  • ハツオン ノ チカク ハンダン ニ エイキョウ ヲ オヨボス オンセイテキ トクチョウ ハツオン ニ ボイン ガ コウゾク スル バアイ


This study investigates what acoustic features influence perception of the Japanese Moraic-Nasals (/N/) by both native Japanese speakers and Korean learners of Japanese (beginners, advanced learners). A perception test and an acoustic analysis were conducted using a minimal pair consisting of "/goseNeN/ (five thousand yen)" and "/gose:eN/ (encouragement)", which were the same stimuli used in Han (2017). As a result of the perception test, the three groups are in agreement that stimuli pronounced as nasal consonants are easily judged as /goseNeN/, while the stimuli pronounced as vowels are seldom judged as /goseNeN/. However, there were differences in the degree of judgment among the groups, and the cause for this difference may also vary depending on the group. Following this result, the spectrum in the third mora of the test words, and the accent pattern and word length (speech rate) for all of the test words were analyzed. Analysis results showed that stimuli that was judged almost 100% as /goseNeN/ had a sharp energy decrease(anti-formant) in the spectrum at the third mora, and can be interpreted as a clear nasal consonant ([N]). It is possible that beginners are more concerned with the force of the articulation compared to other groups. In contrast, accent patterns may have a greater influence for native Japanese speakers. For all three groups, speech rate did not have much influence on the judgment of words.


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