In-Solid Acoustic Source Localization Using Likelihood Mapping Algorithm

Ming Yang, Mostafa Al-Kutubi, Duc Truong Pham
2011 Open Journal of Acoustics  
The significant challenge in human computer interaction is to create tangible interfaces that will make digital world accessible through augmented physical surfaces like walls and windows. In this paper, various acoustic source localization methods are proposed which have the potential to covert a physical object into a tracking sensitive interface. The Spatial Likelihood method has been used to locate acoustic source in real time by summing the spatial likelihood from all sensors. The source
more » ... cation is obtained from searching the maximum in the likelihood map. The data collected from the sensors is pre-processed and filtered for improvement of the accuracy of source localization. Finally a sensor fusion algorithm based on least squared error is presented to minimize the error while positioning the source. Promising results have been achieved experimentally for the application of acoustic tangible interfaces.
doi:10.4236/oja.2011.12005 fatcat:6lbm2cpolzdkdd6enx5kxi4kyy