Two methods for calculating acoustic wave propagation through an interface
Abstract
Two methods for calculating the amplitudes of acoustic waves propagated through a plane boundary are presented. The first is analytical and is based on the Cagniard method. It is used for solving the reflection and transmission of pulsed waves from an infinite line source or a point source at an infinite plane boundary separating two media with different acoustic velocities and densities; and the reflection of an acoustic pulse from an infinite line source or a point source at a plane boundary described as a surface of acoustic impedance Z. The second method is based on a fast Fourier transform algorithm. It is used to evaluate Sommerfeld type integrals. Its results are compared with those given by the stationary phase method and by the geometrical acoustics approximation.
- Publication:
-
Two methods for calculating acoustic wave propagation through an interface Transl. into ENGLISH from ""Presentation de Deux Methodes de Calcul de Propagation dOndes Acoustiques en Presence dUn Dioptre'' (Chatillon
- Pub Date:
- January 1986
- Bibcode:
- 1986tmca.rept.....C
- Keywords:
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- Acoustic Propagation;
- Noise Reduction;
- Sound Waves;
- Acoustic Impedance;
- Acoustic Velocity;
- Fast Fourier Transformations;
- Pulsed Radiation;
- Sommerfeld Approximation;
- Wave Reflection;
- Acoustics