Beamforming measurements of an axial fan in an industrial environment

Authors

  • Tamás Benedek
  • Péter Tóth
https://doi.org/10.3311/PPme.7043

Abstract

This paper summarizes a case study example on the methodology used for phased array microphone measurements in a realistic acoustic environment. A ducted fan rotor is measured in an environment, where structure born noise and aerodynamically generated noise cannot be separated using conventional single microphone acoustic analysis. The conditions of the measurement are similar to an industrial acoustic measurement scenario, where no acoustics treatment can be implemented for aiding in the source localization. The acoustics propagation paths are complex and combined with the high level of wind noise which the microphones exposed to, the interpretation of the results is difficult. The paper presents the processing and analyses of the many microphone worth of data of the phased array microphone system. The wind noise dominated cross spectral matrix is analyzed and source positions are obtained with beamforming procedures for both stationary and rotating sources.

Keywords:

axial fan, phased array microphones, beamforming, rotating source model, industrial environment

Published Online

2013-09-19

How to Cite

Benedek, T., Tóth, P. “Beamforming measurements of an axial fan in an industrial environment”, Periodica Polytechnica Mechanical Engineering, 57(2), pp. 37–46, 2013. https://doi.org/10.3311/PPme.7043

Issue

Section

Articles