Fusion of multiple microphone arrays for blind source separation and localization

Tao Wu, Longji Sun, Qi Cheng, Pramod K. Varshney

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Motivated by potential applications such as the use of multiple robots to collaboratively localize multiple objects/events of interest through audio cues, we propose a novel solution for blind source separation (BSS) and localization using multiple microphone arrays. Unlike the existing state-of-the-art where direction of arrivals (DOAs) and locations are estimated sequentially, the proposed approach jointly estimates both by solving a constrained optimization problem, in which the dependence of the separated signals is minimized. By adopting the alternating direction method of multipliers (ADMM), the problem can be solved in a distributed way in which only the local DOA estimates are communicated among arrays in each iteration. Because the augmented Lagrangian used in ADMM naturally forces the estimates to approach true values by adding penalties on non-optimal ones, the critical scaling and permutation problems in BSS are solved simultaneously. Simulation results further demonstrate that the estimation accuracy can be significantly improved using the proposed method.

Original languageEnglish (US)
Title of host publication2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012
Pages173-176
Number of pages4
DOIs
StatePublished - Oct 12 2012
Event2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012 - Hoboken, NJ, United States
Duration: Jun 17 2012Jun 20 2012

Publication series

NameProceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop
ISSN (Electronic)2151-870X

Other

Other2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012
CountryUnited States
CityHoboken, NJ
Period6/17/126/20/12

ASJC Scopus subject areas

  • Signal Processing
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Wu, T., Sun, L., Cheng, Q., & Varshney, P. K. (2012). Fusion of multiple microphone arrays for blind source separation and localization. In 2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012 (pp. 173-176). [6250458] (Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop). https://doi.org/10.1109/SAM.2012.6250458