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題名 | Study on Acoustic Transmission Losses of Thick Perforated Panels=厚穿孔障板之透過損失研究 |
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作者 | 陳國在; 冉淑慧; | 書刊名 | 中華民國音響學刊 |
卷期 | 6:1 1999.06[民88.06] |
頁次 | 頁71-92 |
分類號 | 334.54 |
關鍵詞 | 音響穿透損失; 穿孔障板; 一致性效應; 臨界頻率; Acoustic transmission loss; Perforated panel; Coincidence effect; Critical frequency; |
語文 | 英文(English) |
中文摘要 | 本文研究,旨在探討厚度大於3mm之穿孔障板透過損失。故本文研究內容包括透過 損失之簡易理論分析、利用單一迴響室聲音強度法進行其實驗室測定,以及以上兩種結果之 比較。 本文研究結果顯示,於頻率 630 Hz 以上時,透過損失理論值對應頻率之變化趨勢與實驗測 定者甚為一致,此兩者之間的最大差異不超過 2 分貝。 另外,本研究亦獲得厚障板的穿孔 效應將致使其於臨界頻率的一致性得到相當程度之疏緩。 |
英文摘要 | This study is to discuss the acoustic transmission loss of perforated panel with thickness greater than 3mm. Therefore, it includes the theoretical analysis using a simple model, laboratory measurement using sound intensity method in a single reverberation room, and the comparison between two results as obtained. The result of this study is clearly to show that the trend of the calculated transmission loss with respect to frequency is very coincident with that of the measured one above 630 Hz, the maximum discrepancy between them is not greater thean 2 dB. In addition, the fact that the perforation on a thick panel can reduce the corresponding coincidence effect to a very great extent at its critical frequency is also found in this study. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。