On the robust near-field broadband beamformer design

Ka Fai Cedric Yiu, Ming Jie Gao, Zhi Guo Feng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Broadband microphone arrays play an important role for noise reduction in various applications, such as voice interface equipment or hands-free telephony. For most cases, it is essential to design the beamformer so that certain spatial and frequency features can be extracted and the rest being attenuated. For the method to be data-independent, a physical signal propagation model can be deployed and the optimization problem can be posed. In this paper, this design problem is studied. Robust minimax designs are considered. We will study the sensitivity of the designs towards uncertainties in the parameters, including speaker positions and microphone locations. We found that the optimal design is not very sensitive to speaker position perturbations, but is affected significantly if microphone locations are indeed erroneous.
Original languageEnglish
Title of host publicationProceedings of the 2nd International Conference on Intelligent Control and Information Processing, ICICIP 2011
Pages251-255
Number of pages5
EditionPART 1
DOIs
Publication statusPublished - 30 Sep 2011
Event2nd International Conference on Intelligent Control and Information Processing, ICICIP 2011 - Harbin, China
Duration: 25 Jul 201128 Jul 2011

Conference

Conference2nd International Conference on Intelligent Control and Information Processing, ICICIP 2011
Country/TerritoryChina
CityHarbin
Period25/07/1128/07/11

Keywords

  • Robust beamformer
  • semi-definite programming

ASJC Scopus subject areas

  • Artificial Intelligence
  • Information Systems
  • Control and Systems Engineering

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