Visualization of sound energy related quantities for model fields

Following a recent paper by Schiffrer and Stanzial, graphical representations of time-independent sound energy related quantities for model fields have been carried out using Maple. Plane waves and dipole fields have been tested for different combinations of amplitudes and frequencies. The corresponding fields of active and reactive intensity, as well as of the velocity of sound energy are displayed. Simulations show that optimum monitoring of sound fields can be achieved matching traditional visualzations with plots of U-velocity. Tested fields have confirrned that while no troubles exist with a general (conventional) definition of the amplitude of the reactive intensity, some problems arise searching for a general definition of the reactive intensity as a vector quantity.