다목적 문화공연장의 리모델링을 통한 실내음향개선에 관한 연구

Abstract

People of all social stratum and generations of human beings get to have cultural demand that only the privileged class could have thanks to material affluence from economic development and rapid growth. This expansion of cultural demand led to the rise of status of multi-purpose performing arts centers where people can communicate directly each other. Hence, multi-purpose performing arts centers became an important space as a bridge that gathers organizations, locals, students, and residents together. However, the lack of recognition for professional sound design in the centers led to sound design that is not appropriate for the characteristics of the space, so the centers can’t provide performing arts environments appropriate for various performing arts. Therefore, this study aimed at providing solutions for architectural and acoustic problems of multi-purpose performing arts centers by measuring architectural sound before construction, predicting the improvement of sound by using sound simulation, carrying out comparative analysis of sound performance by critical sound elements through measuring architectural sound after construction, taking the Community Center of J. The center could not provide sufficient the sense of volume because sound could not be delivered evenly to seats due to the indiscreet construction of sound absorption and the narrow reflection part of the ceiling. In order to these problems, we attached diffusion panels to the walls to intensify reflection sound and plan to the construction of sufficient reflection section on the ceiling, and carried out sound simulation in order to examine the suitability of our plan and the attainment of our goal for architectural sound after measuring sound. (1) In terms of time of the reverberation time, we measured architectural sound, and this suggested that the echo continued in 2.09 seconds. This result was similar with the result of our simulation, and showed us that the center became the performing arts center appropriate with sufficient echo. (2) In terms of the definition, the definition went down as 30∼35 % in our simulation and after the construction from 40 % that was the measurement before the construction. This is appropriate for a music hall. (3) In terms of clarity, the measured after the construction was –0.65 dB. In other words, the B grade music hall became the A grade music hall with –4∼0 dB and with the sufficient and filled sound environment. There were differences between the sound simulation data and the data measured after the construction due to parameters like temperature, humidity, measured conditions, and implementing methods of 3D modeling. Especially, indexes of articulation like sound articulation and music articulation had a high degree of error, so we may improve sound more precisely if we have more precise parameters. If the results of our study are utilized for sound improvement of similar spaces with multi-purpose performing arts centers of our study, the results can be so useful for the construction of professional performing arts with the sufficient sense of sound and diffusion.