Instructional Expertise for Phrase Singing and its Application for a Chorus Learning Support System

The purpose of this study is to explore an intelligent learning environment that supports individual learning of singers of a chorus. In previous research, we developed a learning environment to evaluate the adequacy of the pitch and the validity of the volume for each singing tone. In this environment, the acoustic features of a singing voice (pitch and volume) were evaluated based on the expertise of a choral leader in real-time. Moreover, after a learner sang a song with this system, feedback information was provided as instructional guidance. This information was generated using some special instructional words of the choral leader. Now, we add a new evaluation function to the system. It evaluates only part of the song. This function provides a voice assessment and a teaching guide for the learner´s singing. In this paper, we consider this new function. We discuss the expertise of the leaders for this new function and overview the effects of this evaluation function for phrase singing.