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題名 | 無響室內隔音牆隔音性能特性分析與實測=Analysis and Measurement for the Soundproof Property of Barriers in the Anechoic Room |
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作者姓名(中文) | 劉德源; 湯耀期; | 書刊名 | 中華民國音響學刊 |
卷期 | 8:1 2001.06[民90.06] |
頁次 | 頁59-72 |
分類號 | 441.576 |
關鍵詞 | 無指向性音源; 無響室; 隔音牆; 插入損失; Omnidirectional source; Anechoic chamber; Barrier; Insertion loss; |
語文 | 中文(Chinese) |
中文摘要 | 本文在無響室內架設隔音牆, 由音源、傳播路徑及接收者三方面之理論分析與實 驗,探討隔音牆之隔音性能。首先,自製無指向性喇叭模擬噪音源,進行無指向性分析與聲 功率計算。並進一步將隔音牆置於無響室內量測聲音強度之大小及方向,以研究聲音流向, 最後在接受點處理測其音壓,計算各頻率之插入損失。文中採用兩種理論方法與一壓克力板 模擬隔音牆進行實驗量測比較,同時將三種實際使用於道路上不同形式的隔音牆,於無響室 內進行全尺寸的插入損失實驗最測計算,並分別比較其隔音性能。 |
英文摘要 | The aim of this paper is to study the sound properties of a sound source, sound propagation behavior and the response of the receiver in the sound field with barriers. Firstly, we carry out an analysis of isotropic characteristic and the sound power in an anechoic room to show the quality of the isotropic speaker, which is self-made for simulating the noise. Then, a sound barrier is put into the anechoic room to measure the direction and the amplitude of sound intensity. Menwhile, the amplitude of insertion loss is inserted to learn the soundproof property of the sound barrier. In the paper, we apply two theories to an experiment and numerical calculation, which is performed with a simulated sound barrier made of acrylic as rigid plate in the anechoic room, to evaluate the soundproof property of barrier and to calculate the result of insertion loss under the condition of rigid plat. Finally, three kinds of sound barriers, which are actually built along the highway, are put into the anechoic room to proceed with the full-scale experiment of the soundproof property of these actual sound barriers. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。