Skip to main content
  • Research Article
  • Published:

The Fusion of Distributed Microphone Arrays for Sound Localization


This paper presents a general method for the integration of distributed microphone arrays for localization of a sound source. The recently proposed sound localization technique, known as SRP-PHAT, is shown to be a special case of the more general microphone array integration mechanism presented here. The proposed technique utilizes spatial likelihood functions (SLFs) produced by each microphone array and integrates them using a weighted addition of the individual SLFs. This integration strategy accounts for the different levels of access that a microphone array has to different spatial positions, resulting in an intelligent integration strategy that weighs the results of reliable microphone arrays more significantly. Experimental results using 10 2-element microphone arrays show a reduction in the sound localization error from 0.9 m to 0.08 m at a signal-to-noise ratio of 0 dB. The proposed technique also has the advantage of being applicable to multimodal sensor networks.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Parham Aarabi.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Aarabi, P. The Fusion of Distributed Microphone Arrays for Sound Localization. EURASIP J. Adv. Signal Process. 2003, 860465 (2003).

Download citation

  • Received:

  • Revised:

  • Published:

  • DOI: