The ANR-NAVIG project aims to increase the visually impaired autonomy in a primary and particularly problematic action: the navigation. It aims at providing an augmented audio rendering to blind people to help them in their daily life but without preventing them from perceiving their normal audio environment.
Through a participatory design method, we expected to enable visually impaired to move to a desired destination reliably and securely, without interfering with their normal travel behaviour. Furthermore, the device will allow the possibility to locate and grasp object without the necessity to pre-equip them with electronic component. The AA team objective on the project NAVIG is to develop a binaural synthesis engine that increase reality with auditory information to locate visual targets and to reach a destination while avoiding obstacles.
|Prototype of NAVIG system.|
Auditory 3D information restitution is made using a binaural synthesis engine developed at LIMSI and running on the real-time convolution of HRIR. To obtain better localization performance with non-individualized HRTFs and reduce the up / down and front / rear confusion problem specific to the binaural technology, we developed a game that, based on the plasticity of the hearing system, allows the user to adapt to HRTFs that are not hers.
The objective of auditory guidance is to provide visual information in the form of audio information. We envisage various types of information depending on the type of guidance.