Citation
I. Amundson, P. Schmidt, K. Frampton. "A Decentralized Approach to Sound Source Localization with Sensor Networks". ASME 2004 International Mechanical Engineering Congress and Exposition (IMECE2004), 1311-1317, 2004.

Abstract
A sound source localization system has been developed based on a decentralized sensor network. Decentralization permits all nodes in a network to handle their own processing and decision-making, and as a result, reduce network congestion and the need for a centralized processor. The system consists of an array of battery operated COTS Ethernet-ready embedded systems with an attached microphone circuit. The localization solution requires groups of at least four nodes to be active within the array to return an acceptable two-dimensional result. Sensor nodes, positioned randomly over a ten square meter area, recorded detection times of impulsive sources with microsecond resolution. In order to achieve a scalable system, nodes were organized in groups of from 4 to 10 nodes. Grouping was determined by the selecting the nodes farthest apart from each other. A designated leader of each group analyzed the sound source arrival times and calculated the sound source location based on time-differences of arrival. Experimental results show that this approach to sound source localization can achieve accuracies of about 30 cm . Perhaps more importantly though, it is accomplished in a decentralized manner which can lead to a more flexible, scalable distributed sensor network.

Electronic downloads

• http://dx.doi.org/10.1115/IMECE2004-60736

• HTML

  I. Amundson, P. Schmidt, K. Frampton. <a
  href="http://chess.eecs.berkeley.edu/pubs/757.html"
  >A Decentralized Approach to Sound Source Localization
  with Sensor Networks</a>, ASME 2004 International
  Mechanical Engineering Congress and Exposition (IMECE2004),
  1311-1317, 2004.

• Plain text

  I. Amundson, P. Schmidt, K. Frampton. "A Decentralized
  Approach to Sound Source Localization with Sensor
  Networks". ASME 2004 International Mechanical
  Engineering Congress and Exposition (IMECE2004), 1311-1317,
  2004.

• BibTeX

  @inproceedings{AmundsonSchmidtFrampton04_DecentralizedApproachToSoundSourceLocalizationWithSensor,
      author = {I. Amundson and P. Schmidt and K. Frampton},
      title = {A Decentralized Approach to Sound Source
                Localization with Sensor Networks},
      booktitle = {ASME 2004 International Mechanical Engineering
                Congress and Exposition (IMECE2004)},
      pages = {1311-1317},
      year = {2004},
      abstract = {A sound source localization system has been
                developed based on a decentralized sensor network.
                Decentralization permits all nodes in a network to
                handle their own processing and decision-making,
                and as a result, reduce network congestion and the
                need for a centralized processor. The system
                consists of an array of battery operated COTS
                Ethernet-ready embedded systems with an attached
                microphone circuit. The localization solution
                requires groups of at least four nodes to be
                active within the array to return an acceptable
                two-dimensional result. Sensor nodes, positioned
                randomly over a ten square meter area, recorded
                detection times of impulsive sources with
                microsecond resolution. In order to achieve a
                scalable system, nodes were organized in groups of
                from 4 to 10 nodes. Grouping was determined by the
                selecting the nodes farthest apart from each
                other. A designated leader of each group analyzed
                the sound source arrival times and calculated the
                sound source location based on time-differences of
                arrival. Experimental results show that this
                approach to sound source localization can achieve
                accuracies of about 30 cm . Perhaps more
                importantly though, it is accomplished in a
                decentralized manner which can lead to a more
                flexible, scalable distributed sensor network.},
      URL = {http://chess.eecs.berkeley.edu/pubs/757.html}
  }
  

Posted by Christopher Brooks on 4 Nov 2010.
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