Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
J Acoust Soc Am. 2011 Aug;130(2):673-6. doi: 10.1121/1.3598430.
The acoustical insertion losses produced by a balcony-like structure in front of a window are examined experimentally. The results suggest that the balcony ceiling is the most appropriate location for the installation of artificial sound absorption for the purpose of improving the broadband insertion loss, while the side walls are found to be the second best. Results also indicate that the acoustic modes of the balcony opening and the balcony cavity resonance in a direction normal to the window could have a great impact on the one-third octave band insertion losses. The maximum broadband road traffic noise insertion loss achieved is about 7 dB.
实验研究了窗户前阳台状结构产生的隔声量。结果表明，为提高宽带隔声量，在阳台天花板上安装人工吸声材料最为有效，而在侧墙上安装效果次之。结果还表明，阳台开口的声学模态以及垂直于窗户方向上的阳台腔共振，对 1/3 倍频程插入损失有较大影响。最大宽带道路交通噪声插入损失约为 7dB。
