Aqua Tambourine：カラオケの特性を考慮した伴奏用楽器

カラオケを盛り上げるためにタンバリンやマラカスなどの打楽器がよく用いられている．しかし，歌唱者の歌唱を盛り上げるようにこれらの楽器を上手く演奏するためには，演奏経験やリズム感などが必要不可欠となる．そこで本研究では楽器演奏に馴染みの無い人間でも簡単かつ適切に伴奏できるような非歌唱者用伴奏楽器を提案する．提案システムであるAqua Tambourineでは，奏者がタンバリンを振る動作から得た振動周波数によって，奏者が演奏しようとしているビートを推定し，歌唱中の楽曲に合わせた適切なタイミングで演奏音を出力する．Aqua Tambourineと通常のタンバリンを実際のカラオケの伴奏に使用し，比較実験を行った．その結果，通常のタンバリンと比べて，Aqua Tambourineは歌唱者のリズムを乱さずに伴奏ができていたことが確認された．また，歌唱者の邪魔をしないことによってタンバリン奏者の緊張が和らげられ，気軽に演奏できていたことも明らかになった．しかしながら，Aqua Tambourineが音楽的な創造性を制限することについては賛否両論であり，カラオケの盛り上がりを妨げている可能性が示唆された．Percussion instruments such as tambourines and maracas are often used to enliven karaoke performances. However, to play these instruments well enough to enhance the singers' singing, musical experiences and a sense of rhythm are indispensable. Therefore, this study proposes an accompaniment instrument for non-singers that can be easily and appropriately played by people who are not familiar with playing musical instruments. The proposed system, Aqua Tambourine, estimates the beat that the player is trying to play based on the vibration frequency obtained from the player's shaking of the tambourine and outputs the performance sound with appropriate timing according to the music being sung. In this study, a comparison experiment was conducted by using Aqua Tambourine and an ordinary tambourine for actual karaoke accompaniment. As a result, it was confirmed that Aqua Tambourine was able to accompany the singer without disturbing the rhythm of the singer compared to the normal tambourine. It was also clear that the tambourine player's tension was eased by not disturbing the singer. However, there was some disagreement that the Aqua Tambourine restricted musical creativity, suggesting that it may have hindered the excitement of the karaoke performance.

identifier:https://dspace.jaist.ac.jp/dspace/handle/10119/18857