Study about reverberation performance improvement in musical classroom repair in a school facility -The reverberation performance of each construction supplies using the simple reduction model-

Abstract

A musical classroom totals an elementary school, a junior high school and a high school in Japan and has that 36,372 schools at present, and is established by most schools. Sound insulation, soundproofing, sound absorbency and the reverberation performance can be asked from the performance of the musical classroom. We're each schools about the reverberation performance, but I also have the musical classroom where you can find reverberation to be insufficient. A repair work guideline of exterior and interior (plan) and the said explanation are published in September, 2014 more than architectural Institute of Japan, and safety, an usability and the repair guideline by which it's for a workability are described, but it should also be considered about repair work method to acoustic performance. Constituent materials of the musical class which is held for the school constructed actually are investigated, the experiment which made the material the subject is made, the sound absorbing coefficient and thereverberation time are calculated and the reverberation performance of each musical classroom is considered by this research.