A novel indoor beamformer design method with obstacles

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In designing beamformers, obstacles in the domain are often neglected due to a lack of model in handling sound wave propagation around objects. To address this problem, the governing conservation laws for acoustic perturbation are solved directly together with objects in a computation domain so as to correctly capture the complex sound wave propagation. The conservation laws are solved by using direct aeroacoustic simulation technique based on the conservation element and solution element (CE/SE) scheme. Obstacles inside the computational domain will be described as barriers and reflective boundary conditions are imposed. With the estimated impulse responses, better beamformers can be designed via optimization. Numerical experiments are presented to demonstrate the proposed beamformer design method. This paper reports the first study of optimal beamformer design problem with obstacles inside the domain of interest.
Original languageEnglish
Pages (from-to)233-243
Number of pages11
JournalPacific Journal of Optimization
Volume12
Issue number2
Publication statusPublished - 2016

Keywords

  • Beamformer design
  • Navier-Stokes equations
  • Semi-infinite linear programming

ASJC Scopus subject areas

  • Applied Mathematics
  • Computational Mathematics
  • Control and Optimization
  • Mechanical Engineering
  • Acoustics and Ultrasonics

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