An electroacoustical testbench: characterizing an audio line

Abstract

A plug-and-play audio testbench is a really useful tool for an electroacoustical emissions laboratory. This paper proposes a suite of tools and a set of configurations designed for obtaining a complete view of the most important audio and electroacoustical figures of merit. The main goal of this testbench is to provide a low-cost electroacoustical characterization system following a black box approach, easy to use in investigation research and educational environments. Furthermore, this development aims to provide a guided set of exercises for the students of the Master’s Degree in Acoustics Engineering of the University of Granada to be able to actually work with modern audio electronic deployments like balanced audio lines or digital signal processing toolboxes. Within this Master’s, the developed tool constitutes a new practical program block of the Electroacoustical subject and extends the subject theoretical lesson contents.