title: Generalized acoustic energy density.
abstract: 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.
authors: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA. buye.xu@gmail.com
authors: Buye
authors: B
authors: Xu
authors: Scott D
authors: SD
authors: Sommerfeldt
authors: Timothy W
authors: TW
authors: Leishman
mesh_terms: D000162:Acoustics; D003198:Computer Simulation; D005160:Facility Design and Construction; D008962:Models, Theoretical; D009038:Motion; D009622:Noise / Q000517:prevention & control; D009716:Numerical Analysis, Computer-Assisted; D011312:Pressure; D013016:Sound; D013997:Time Factors; D014732:Vibration