Real Time Auralization Module for Electronic Travel Aid Devices for People with Visual Disability

  • Alex Armendáriz Pontificia Universidad Católica del Ecuador
  • José Lucio-Naranjo Escuela Politécnica Nacional
  • Diego Navas Escuela Politécnica Nacional
Keywords: Aurilization, segmented convolution, ETA, validation of virtual reality.


This paper presents a software module for real-timeauralization that was used to recreate the acoustic perceptionproduced by a sound obstacle in virtual and real environments.This module fulfills the function of inserting, in any audio signal,a three-dimensional positioning effect that allows the listenerto determine the location of a sound source within the chosentest environment. This effect was achieved with a processingtechnique called segmented convolution and several functionscontained in a database of head related impulse responses(HRIRs). The module was tested in a real environment anda virtual one. In the real test environment, the user had astereoscopic camera that fulfilled the function of an obstacledetector, as well as a computer and headphones, in which themodule was installed and three-dimensional sound alerts weregenerated. In this way, the effects could be recorded, analyzed,discussed and finally validated.

Author Biography

Alex Armendáriz, Pontificia Universidad Católica del Ecuador



Research Articles for the Regular Issue