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Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
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Generalized acoustic energy density.

Buye Xu1, Scott D Sommerfeldt, Timothy W Leishman

  • 1Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA. buye.xu@gmail.com

The Journal of the Acoustical Society of America
|September 8, 2011
PubMed
Summary
This summary is machine-generated.

A new generalized acoustic energy density (GED) offers improved spatial uniformity over traditional measures. This adaptable quantity can be optimized for various acoustic applications, enhancing sound field analysis.

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Area of Science:

  • Acoustics
  • Energy Density
  • Sound Fields

Background:

  • Acoustic kinetic and total energy densities are spatially uniform in enclosures.
  • These properties make them preferable to acoustic potential energy density (squared pressure).
  • Traditional measures lack adaptability for diverse acoustic applications.

Purpose of the Study:

  • Introduce a generalized acoustic energy density (GED).
  • Define GED using weighting factors for adaptable formulation.
  • Explore GED properties for various sound field conditions.

Main Methods:

  • Formulating generalized acoustic energy density (GED) with weighting factors.
  • Analyzing GED for individual room modes.
  • Investigating GED in diffuse sound fields and below the Schroeder frequency.

Main Results:

  • GED offers an additional degree of freedom for customization.
  • GED can replicate traditional acoustic energy density measures.
  • GED demonstrates potential for optimization across different acoustic scenarios.

Conclusions:

  • The generalized acoustic energy density (GED) provides a flexible and potentially superior metric for sound field analysis.
  • GED's adaptability allows for tailored measurements in diverse acoustic environments.
  • Further exploration of GED properties is warranted for practical applications.