親密度の低い2字漢語と4字漢語短縮形のアクセントの生成

要旨

This paper investigates the accent distributions of two-character Sino-Japanese words and truncated Sino-Japanese compounds, using data from unfamiliar word read-aloud tasks participated by Tokyo metropolitan dialect speakers. The results show that the accent distribution of two-character Sino-Japanese words highly depends on the mora number of the second character, which coincides with previous studies examining accent dictionaries, and truncated Sino-Japanese compounds are generally more likely to be pronounced unaccented than two-character Sino-Japanese words. An analysis based on Stochastic Optimality Theory is proposed to explain different accent distributions and variations observed in the task results.