Effects of Different Building Materials and Treatments on Sound Field Characteristics of the Concert Hall

Abstract

The effects of different building materials on sound field characteristics of the concert hall were studied by experimental study and numerical simulations. A single non-directivity excitation sound source in situ test was carried out. The acoustic analysis model of the multifunctional concert hall was established. The reverberation time, the early decay time, the speech transmission index and the sound pressure level (SPL) were tested. The architectural treatment solutions with or without sound absorption in the design ceiling, sound absorption on the side walls, the influence of ceiling form on acoustic characteristics, and the acoustic characteristics of different positions on the first and second floors were analyzed, respectively. Simulation results show that there was little difference in reverberation time at different reception points by using the same treatment solutions, and the speech transmission index increased with the distance of the reception point. The language performance of the positions on the second was better than on the first floor. The SPL decreased with increasing distance from the receiving point. The ceiling form had no significant effects on the acoustic characteristics of the multifunctional concert hall, and the reverberation time was smaller when acoustic materials were used in the ceiling than the side walls. Meanwhile, the language transmission performance in multifunctional concert halls was improved. The difference between the maximum and minimum sound pressure levels for a sound-absorbing material ceiling is less than that of a non-sound-absorbing material.

A Review Study on Comparison of G+10 Structure with Several Materials Masonry, Concrete and Glass Fiber Reinforced Gypsum Panel (GFRG)

“…Compared to ceilings made of uninsulated materials, the variation between the lowest and maximum sound pressure levels is less for ceilings with acoustical individuals. [3] These systems have lower overall expenses than common systems, as shown in this example, but they require a larger initial investment. Funding allocation and affordability are two possible considerations.…”

“…Installing materials that absorb sound on the ceiling during concert hall design can enhance the auditory experience. [3] Each unit will have the same end-product quality because there is very little possibility of material flaws developing during the process. The fact that the units are built on-site after being manufactured off-site speeds up construction compared to traditional methods.…”

“…Therefore, more preparation is needed when using this technology to significant projects where landscaping is involved. Yu, Rui guang, et al 2022) [3] the influence of various building materials on the properties of the sound field in a concert hall was investigated through experimental tryouts and numerical simulations. Utilizing an Omni-directional excitation source, a field test was conducted.…”