Instantaneous and time-averaged intensity flow measurements in scale models

Author:

Tay Daniel1,Xiang Ning1

Affiliation:

1. Graduate Program in Architectural Acoustics, Rensselaer Polytechnic Institute , Troy, New York 12180, USA daniel-tay@uiowa.edu , xiangn@rpi.edu

Abstract

Current methods of representing energy flows in rooms have been limited to stationary pressure contour maps or intensity vectors derived from finite-element modeling (FEM) software. Despite recent advances in FEM analysis, such models are at best approximations of real-world phenomena because of the assumptions made in obtaining these results. This paper presents an energy flow visualization tool that combines the well-accepted practice of scale modeling in performance venue acoustics design and recent advances in sensor technology to provide rapid and accurate real-time maps of intensity flows derived from simultaneously-measured pressure and velocity quantities in the studied space.

Publisher

Acoustical Society of America (ASA)

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics

Reference19 articles.

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2. A criterion for an energy vortex in a sound field;J. Acoust. Soc. Am.,1987

3. Vortex modes in rooms;J. Acoust. Soc. Am.,1987

4. A comparison of two different sound intensity measurement principles;J. Acoust. Soc. Am.,2005

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