Desarrollo de una simulación FDTD para la estimación de parámetros acústicos en entornos cerrados

Abstract

Numerical simulation dealing with acoustic phenomenology requieres different methods to approximate the value of characteristic and geometric properties of the environment where these phenomena occurs. Have been developed a collection of methods appropriate for different applications and use cases. Acoustic phenomena in underwater acoustics within closed environments are addressed. The use of fluid dynamics in specific regimes greatly simplify the number of variables involved in these environments allowing its characterisation. Furthermore, these closed environments are of special interest in the study of marine fauna, because marine mammals communication is based on the use of sound. Thus, it is of interest for the study of species in captivity in ponds, pools or in the wild. So it could be helpful since working with animals becomes complicated and expensive when it is intended to maintain their welfare. For this reason, this TFG presents an API that facilitates the development of acoustic simulation programs, based on accoustic propagation in time domain in closed spaces, allowing the study of their acoustic properties. Some programs have been developed using the API in the course of this work. The wave propagation algorithm is based on FDTD, with application for different boundary conditions, being useful for the accoustic property studies, by the use of the impulsive response.