聆聽空間中的迴響時間通常是仰賴室內裝修材之吸音性能來控制，但在日常生活中礙於實際使用情形，改變空間之聲學特性除於設計初期便規畫完善或移除既有裝修重新根據需求整建；以小型聆聽空間為例，如欲在低預算內控制其音響品質，以重新施作全面性的裝修來做音響品質的改善所費之成本較高，故獨立於室內空間之聲學產品開發有其必要性。本研究前期先行分析現有市售調音板之特點，再以相關吸音理論作為基礎，研發可控制室內迴響時間之調音板。本研究設計開發出一款可改變面材及構造之調音板，在不變動室內裝修的狀況下，達到控制不同使用需求所相對應之室內音響品質的功能，並可獨立於空間使用，其調音板面材以穿孔鋼板及幾何微孔板作為設定。本研究參照CNS 9056迴響室法吸音係數測定法，進行調音板之吸音性能測試，藉此得知調音板之裝設方式與各頻的吸音力對應之關係。研究成果顯示室內調音板可以不同的面材組合與裝設方式，滿足特定範圍頻帶的吸音需求，在面材部分，幾何微孔板普遍優於穿孔鋼板，主要可提供中高頻之吸音；以穿孔鋼板為表面材或背面材，並以壁掛式或壁貼式距背牆一定距離安裝時，主要則能提供中頻之吸音；裝設方式部分，以壁貼式距背牆一定距離安裝，在本研究所使用之面材(幾何微孔板、穿孔鋼板)設定下，皆能提供較好之中低頻吸音；穿孔鋼板於單雙層構造變化下，吸音特性幾乎無變化，因此在使用上以單層施作較具經濟效益。另外，研究成果亦顯示室內調音板可於不變動室內裝修的狀況下，達成室內迴響時間之調整，繼而創造多元之室內聲環境。

　　Reverberation time of the listening room is usually dependent on the acoustic performance of interior decoration materials to control. Used the small scale listening room as the example, changed the interior sound field required to redecoration entire room also demand more construction budget; so it is important to development a product could adjustment the sound field also independent from the interior decoration.
　　First, analysis sound absorption, installation, specification of existing acoustics panels on the marketing. Second, based on sound absorption theory to development acoustics panels what could adjustment the reverberation time. This subject designed an acoustical panel what could change the faceplate and structure for the condition without changing interior decoration to satisfy different interior acoustical demand, also maintain independence, include PP (Perforated Panel) and GMP (Geometry Micro-perforated Panel) as acoustics panel’s faceplates. The experiments followed CNS 9056 (Measurement of sound absorption in a reverberation room) to evaluated acoustics panels sound absorption performance for the effect factors between installation modes and faceplates.
　　The results of the measurement in the study were shown two parts. One was the influence of equivalent sound absorption area caused by acoustics panels installation modes, and the other was the influence of equivalent sound absorption area caused by changing the faceplate. In the part of the influence by acoustics panel installation modes, the results reveal that the acoustics panel as wall-sticking mode with distances from wall provides superior absorption at low and medium frequencies. In the other hand, there was not obvious difference of equivalent sound absorption area between single and double structure of acoustics panel with the faceplates as PP. In the part of the influence by changing the faceplate, the equivalent sound absorption area of acoustics panel as the faceplates with GMP is better than it with PP, and the ranges of its absorption was at medium and high frequencies. The acoustics panel used PP as faceplates as wall-sticking and wall-hanging mode with distances from wall provides superior absorption at medium frequencies. Above all, the acoustics panel was suitable to adjust the reverberation time without redecorating entire room, and the adjustable interior sound field would be shown.

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(三)日文文獻
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