Evaluation of Acoustic Propagation Paths into the Human Head
Abstract
In summary, the highly interdisciplinary program has addressed successfully the challenging technical goals set forth to develop and validate an acoustic wave propagation model using well understood and documented computational techniques that track an air-borne incident acoustic wave propagated around, into and in the human head. A finite element model was formulated for simulating the acoustic wave propagation concentric spheres. This model was verified against the closed form solution of the plane wave propagation into concentric fluid spheres. A ray tracing method was developed and verified to visuali/c the acoustic wave propagation pathways from a scalar pressure field. Finally, the occlusion effect provides a relatively robust phenomenon to compare the computational findings with the behavioral and functional findings; the occlusion effect contour (or difference score) between the open and occluded ear show a similar trend between the computational findings and the behavioral and functional findings In conclusion, the computational approach, utilizing fluid elements, provides very good agreement m ith human subject findings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 24, 2009
- Accession Number
- ADA574400
Entities
People
- William D. O'brien Jr.
Organizations
- University of Illinois Urbana–Champaign