Elastodynamic Finite Integration Technique model of a sound channel with objects and attenuation

Elastodynamic Finite Integration Technique (EFIT) models have been used to simulate both linear and nonlinear interaction between sound, objects and boundaries. The EFIT can be effectively applied to sound channel configurations with rough interfaces, objects and sediment concentrated scatterers. Until recently the EFIT model did not include material attenuation and could produce realistic results only in a limited number of cases. This work introduces attenuation into the EFIT model and gives some results on a complex 2D configuration. One of the characteristics of the EFIT modeling approach is its inherent parallelization and ease of implementation on modern Graphics Processing Units (GPU). Comparison of computation time between a single CPU and a single GPU implementation of the same model are presented.