歌声の心理的印象と音響特徴量との対応付けによる歌唱の習熟度評価に関する基礎的検討

摘要

The purpose of this study is to develop teaching method based on acoustic features of singing voices. We have examined acoustic features differences and psychological impression about some singing voices with various skill levels. In this paper, we discuss the relationship between acoustic features and levels of proficiency. As acoustic features, we measured power level, sharpness or singer's formant, and duration / amplitude / frequency of vibrato of the singing voices. Also, we extracted two factors suitable for singing voices evaluation by using semantic differential method, as psychological impression evaluation. In addition, an experimental vocal lesson for some beginners was executed. We compared the changes of acoustic features of singing voices in pre-test and post-test. Then, based on these results, we consider the relationship between acoustic features and skill levels of singers.%本研究では，歌唱指導への応用を目的として，歌声の音響分析や心理的印象評価を行っている.今回， 習熟度の異なる歌唱者の歌声に対して，SD法により主観評価実験を行い，歌声を評価する因子を抽出した.また，歌声の音響特徴量としてパワー，Singer's formantの銳さ，ビブラートを求め，習熟度による影響が示唆される特徴量の検討を行った.そして，重回帰分析により歌声の心理的印象と習熟度との関連が示唆された音響特徴量との開連について考察した.次に，声楽経験の無い歌唱者が声楽発声指導者により発声指導を受け，指導前後での音響特徴量の変化についても考察した.