Title :
A comparative study of sound localization algorithms for energy aware sensor network nodes
Author :
Julián, Pedro ; Andreou, Andreas G. ; Riddle, Larry ; Shamma, Shihab ; Goldberg, David H. ; Cauwenberghs, Gert
Author_Institution :
Electr. & Comput. Eng. Dept., Johns Hopkins Univ., Baltimore, MD, USA
fDate :
4/1/2004 12:00:00 AM
Abstract :
Sound localization using energy-aware hardware for sensor networks nodes is a problem with many applications in surveillance and security. In this paper, we evaluate four algorithms for sound localization using signals recorded in a natural environment with an array of commercial off-the-shelf microelectromechanical systems microphones and a specially designed compact acoustic enclosure. We evaluate performance of the algorithms and their hardware complexity which relates directly to energy consumption.
Keywords :
audio signals; direction-of-arrival estimation; micromechanical devices; microphones; safety systems; sensors; surveillance; acoustic enclosure; commercial off-the-shelf microelectromechanical systems microphones; direction of arrival estimation; energy aware sensor network nodes; energy consumption; energy-aware hardware; hardware complexity; intelligent sensors; natural environment; security; signal recording; sound localization algorithms; surveillance; Acoustic arrays; Acoustic sensors; Algorithm design and analysis; Energy consumption; Hardware; Intelligent sensors; Microelectromechanical systems; Microphone arrays; Signal design; Surveillance;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2004.826205
