Simulation and visualization of loudspeaker'S sound fields

The visualization of sound fields is useful for understanding the directional features of sound radiation by an electro-acoustic transducer. The aim of this work is to present a numerical technique named here the Convolution Method (CM) for the simulation of sound pressure field radiated by a loudspeaker which is represented by the simple concept of vibrating rigid piston located in a baffle. Computational and visualization program is developed for sound fields emitted by such transducer. The numeric results of simulation for normalized contour surface map of acoustic pressure field are shown. For comparing simulation results, the transverse acoustical beam section of sound pressure field produced by an electrodynamical loudspeaker is measured using intensimetry techniques.