Effects of architectural design parameters on room acoustical field characteristics

• Main Authors: Hsiao-Chia Shen, 沈曉佳
• Other Authors: Der-Yuan Liou
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/51547103873275512386

碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 96 === The objective of this thesis is to establish an initial design of architectural acoustic field characteristics, which includes room acoustic field properties and architectural materials of sound insulation. By means of the study, the goal of planning before construction and design improvement could be achieved. The experiments of room acoustic field properties were simulated and measured respectively in a large exhibition hall and in a multi-functional hall. We compared the objective acoustic parameters, such as reverberation time, sound pressure distribution, clarity , rapid speech transmission index (RaSTI) and articulation loss of consonant (ALcons). In the large exhibition hall we changed the boundary materials to simulate design improvement, and in the multi-functional hall we altered the arrangement of loudspeakers to analyze its influence to acoustic field. From the experiment results, the trends of simulation by objective acoustic parameters are similar to those in experiments. Therefore, the results of simulation could be as the reference resources of acoustic field design and estimation. The experiments of architectural sound insulation materials were simulated and measured respectively in laboratory and in practical fields. Afterward we compared the coincident frequencies of the two and expected to estimate the overlapping frequency range of insulation materials in advance by simulation to be as the basis for insulation material design. From the experiment results, the coincident frequencies could be observed by simulation apparently, and the trends are similar to those in experiments . For this reason, characteristics of insulation materials could be determined by simulation in advance, and the simulation method could also be applied in insulation material design.