@article{ref1,
title="Modeling treatments to reduce sound transmission through an open window into a room: Effect of window thickness",
journal="Journal of the Acoustical Society of America",
year="2011",
author="Sieck, Caleb F. and Lau, Siu-Kit",
volume="130",
number="4",
pages="2389-2389",
abstract="Sound transmission loss through an exterior wall is limited by its weakest structure, generally a window, especially if it is open. Considering the acoustic modes within a window and a room are important because much of the acoustic energy from noise sources such as traffic and large wind turbines is in the low to middle frequency range. Previous models of open windows have either neglected the thickness of the window or the influence of room modes on the sound transmission. The present investigation considered a baffled rectangular aperture of finite thickness backed by a rigid walled cavity. An impedance/mobility approach was used to study the effect of the thickness of an open window on the insertion loss and sound pressure levels inside the cavity. The insertion loss study was confirmed using FEM modeling, and the difference in sound pressure levels was compared to experimental results. Increasing window thickness decreases the amount of sound transmitted at frequencies below the second order modes of the cavity for both window sizes under investigation. Using the impedance/mobility approach was effective in this study and allows the model to be easily extended.<p /><p>Language: en</p>",
language="en",
issn="0001-4966",
doi="10.1121/1.3654571",
url="http://dx.doi.org/10.1121/1.3654571"
}