Localization of unknown sound sources using low-power wireless acoustic sensor networks

Speaker: Geoffrey Ottoy

Company/ Institute: KU Leuven

Event: 20th work meeting

Date: 8 December 2015

Abstract:

The SINS SBO project focuses on the deployment of wireless acoustic sensor networks (WASNs) to monitor activity in a certain area: e.g., WASNs can be installed in the homes of aging people to monitor their behavioral patterns (to detect mild cognitive decline), or to respond to emergency situations (e.g., a cry for help). A great addition to this kind of monitoring applications is the knowledge of the location of the detected event. However, the main drawback of these WASNs, that typically rely on battery-powered sensors, is the energy consumption, that can drastically reduce their lifetime. We show how we can implement energy-efficient acoustic localization and explain the principles of the techniques that can be deployed, to localize unknown sound sources, i.e. Time-Difference of Arrival (TDOA) and Angle of Arrival (AOA).

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