Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA.
J Acoust Soc Am. 2011 Sep;130(3):1370-80. doi: 10.1121/1.3624482.
The properties of acoustic kinetic energy density and total energy density of sound fields in lightly damped enclosures have been explored thoroughly in the literature. Their increased spatial uniformity makes them more favorable measurement quantities for various applications than acoustic potential energy density (or squared pressure), which is most often used. In this paper, a generalized acoustic energy density (GED), will be introduced. It is defined by introducing weighting factors into the formulation of total acoustic energy density. With an additional degree of freedom, the GED can conform to the traditional acoustic energy density quantities, or it can be optimized for different applications. The properties of the GED will be explored in this paper for individual room modes, a diffuse sound field, and a sound field below the Schroeder frequency.
在文献中，人们已经对轻阻尼封闭空间中声场的声动能密度和总能量密度的性质进行了深入研究。与通常使用的声势能密度（或压力平方）相比，它们在空间上更加均匀，因此更适合各种应用的测量量。在本文中，将引入广义声能密度（GED）。它是通过在总声声能密度的公式中引入加权因子来定义的。通过增加一个额外的自由度，GED 可以符合传统的声能密度量，也可以针对不同的应用进行优化。本文将探讨 GED 在单个房间模式、漫射声场和施罗特定频率以下声场中的性质。
