A Consideration on Acoustic Properties on Concert-Hall Stages

This paper discusses acoustic properties that musicians experience on a concert hall stage; the discussion is based on the authors' experience gained from conducting experimental studies using a three-dimensional sound field simulation technique. First, the experimental findings on the relationship between the acoustic requirements of musicians and acoustic conditions such as early reflection and reverberation are reviewed. Second, the validity and problems of stage acoustic indices ST_early, ST_late, and EEL are addressed. In addition, unsolved issues with regard to musicians' requirements during their performance are considered and problems requiring future study are pointed out.