Index-matched Boundary Techniques for the Elimination of Acoustical ResonancesAIAA Journal
AbstractWe extend the principle of optical index of refraction to apply the concept of acoustical index for transverse acoustical wave propagation in strings. The relationship between acoustical index and mass density of the acoustic material is developed. With this theoretical link established, classic index-matching techniques are explored at acoustical boundaries. Proper selection of boundary interface segments leads to the elimination of resonant vibrationalmodes that occur in rigidly supported strings, while maintaining the nonresonant vibration response.
Document VersionPublished Version
CopyrightCopyright © 2003, American Institute of Aeronautics and Astronautics
PublisherAmerican Institute of Aeronautics and Astronautics
Citation InformationJack H. Parker and Bradley D. Duncan. "Index-matched Boundary Techniques for the Elimination of Acoustical Resonances" AIAA Journal Vol. 41 Iss. 2 (2003)
Available at: http://works.bepress.com/bradley_duncan/25/