近年來，交通建築有挑高、巨大化和複雜化的趨勢，影響建築聲學品質的因素也愈加繁雜。然而，建築聲學品質仍不是大眾運輸建築設計時主要的考慮項目之一，以致建築物完工後其建築聲學品質不甚理想。本研究針對已建設完成但仍需改善其建築聲學品質的大型交通建築提出優化方案，並以高雄港埠旅運中心為例，透過分析對人流動線、各空間旅客行為、建築物現況等內容之深入了解，並根據現場聲學性能測量和初步電腦模擬，提出降低建築物的背景噪音並提升語音清晰度的策略。根據現場餘響時間明顯偏長，各空間的餘響時間在500Hz~4000Hz平均介於3.3到6.3秒，除可歸因於室內表面之高反射性，有音回走障害，也由空間挑高、平行牆面、空間的串連等所導致，本研究假設以不調整空間尺度和形體為前提，並考量成本及施作難易度，探討各種吸音材配置方案之聲學品質改善效果及其優缺點。僅單純施作於天花板、牆面或地板等之全部或局部區域時餘響時間T30平均下降44％，複合二至三類室內表面時則平均可下降62％。各個方案中以成本為主要考量時，牆面、局部地板、低天花板等配置方案可為優先選擇，若以維護成本或後續使用方便度為考量時，施作於所有天花板則為優先選擇。根據優化後之聲壓級下降的幅度顯示，將餘響時間與早期衰減時間降低，可有效地減少背景噪音。而早期衰減時間較適合做為反應聲壓級變動且容易量度之參數。

In recent years, there has been a trend in transportation architecture towards increased height, enlargement, and complexity, resulting in a growing array of factors that impact architectural acoustic quality. However, architectural acoustic quality still does not rank as a primary consideration in the design of public transportation buildings, leading to less than ideal acoustic performance once these buildings are completed. This study focuses on proposing optimization strategies for large-scale transportation buildings that have already been constructed but still require improvement in their architectural acoustic quality. Using the Kaohsiung Port and Harbor Terminal as a case study, a comprehensive understanding is gained by analyzing factors such as pedestrian flow patterns, passenger behavior in various spaces, and the current state of the building. Based on on-site acoustic performance measurements and preliminary computer simulations, strategies are suggested for reducing background noise within the building and enhancing speech clarity.

With notably prolonged reverberation times observed on-site, the reverberation times in various spaces between 500Hz to 4000Hz average between 3.3 and 6.3 seconds. This can be attributed not only to the high reflectivity of interior surfaces but also to factors such as sound reflections hindrances resulting from elevated ceilings, parallel walls, and spatial interconnections. Assuming that adjustments to spatial dimensions and form are not considered, and taking into account cost and implementation difficulty, this study explores the effects, advantages, and disadvantages of various acoustic improvement strategies involving the arrangement of sound-absorbing materials. When applied solely to the entire or specific areas of ceilings, walls, or floors, the average reduction in reverberation time (T30) is 44%. In cases involving composite surface types, such as combining two to three types of interior surfaces, the average reduction can reach 62%.

Among the various proposed schemes, prioritizing options based on cost, such as wall treatments, localized floor treatments, and lowered ceilings, is recommended. However, if maintenance cost or ease of future use is taken into account, treating all ceilings should be given priority. According to the simulated results of the decrease in sound pressure level, it is evident that reducing both reverberation time and early decay time can effectively minimize background noise. Early decay time is particularly suitable as a parameter for measuring variations in sound pressure level and is easily quantifiable.

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