Acoustic Propagation Modeling Using MATLAB

Abstract

This report presents a computational technique for the rapid, efficient calculation of fields from transient acoustic sources in linear, isotropic media. The source velocity is separable in space and time. The method uses a spatial impulse response method based on linear systems concepts to express the output in terms of the Green's function of propagation equation and the boundary conditions. The output is expressed as the inverse spatial transform of the product of the transform of the spatial excitation and a time- varying spatial filter that represents propagation. The calculation technique has been implemented in MATLAB and sample cases are presented for the circular and square piston, as well as a Gaussian- and Bessel-weighted spatial excitation. Code for the MATLAB implementation is provided.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA270905

Entities

People

  • John P. Powers

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Filters
  • Acoustic Propagation
  • Acoustic Velocity
  • Acoustic Waves
  • Acoustics
  • Bessel Functions
  • Computer Programming
  • Computer Programs
  • Computers
  • Engineering
  • Frequency
  • Gaussian Distributions
  • Geometry
  • Linear Systems
  • Mainframe Computers
  • Three Dimensional
  • Two Dimensional

Readers

  • Approximation Theory.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.

Technology Areas

  • Space