Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Beamforming-based Partial Field Decomposition in Acoustical Holography

음향 홀로-그래피에서 빔 형성을 이용한 부분 음장 분리

  • 황의석 (대우전자 디지털미디어 연구소) ;
  • 조영만 (서울대학교 기계항공공학부) ;
  • 강연준 (서울대학교 기계항공공학부)
  • Published : 2001.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a new method for Partial field decomposition is developed that is based on the beamforming algorithm for the application of acoustical holography to a composite sound field generated by multiple incoherent sound sources. In the proposed method, source Positions are first predicted by MUSIC(multiple signal classification) algorithm. The composite sound fields can then be decomposed into each partial field by the beamforming. Results of both numerical simulations and experiments show that the method can find each partial field very accurately and effectively, and that it also has Potential to be used for application to distributed sources.

Keywords

References

  1. Journal of the Acoustical Society of America v.78 no.4 Nearfield Acoustical Holography : I, Theory of Generalized Holography and the Development of NAH Maynard, J.D.;Williams E.G.;Lee, Y.
  2. B & K Technical Review no.1 STSF A Unique Technique for Scan-Based Nearfield Acoustical Holography Without Restriction on Coherence Hald, J.
  3. Proceedings of SAE 972053 The Use of Nearfield Acoustical Holography(NAH) and Partial Field Decomposition to Identify and Quantify the Sources of Exterior Noise Radiated from Vehicle Takata, H.;Nishi, T.;Jiang, W.;Bolton, J.S.
  4. Proceedings of NOISE-CON 98 Partial Field Decomposition in Nearfield Acoustical Holography by the Use of Singular Value Decomposition and Partial Coherence Procedures Kwon, H.S.;Bolton, J.S.
  5. Proceedings of NOISE CON 94 A Comparison of Multi-Reference Nearfield Acoustical Holography Procedures Hallman, D.L.;Bolton J.S.
  6. IEEE Transactions on Antennas and Propagation AP 34 no.3 Multiple Emitter Location and Signal Parameter Estimation Schmidt, R.O.
  7. Array Signal Processing : concepts and techniques Johnson, D.H.;Dudgeon, D.E.
  8. Underwater acoustic system analysis Burdic, W.S.
  9. IEEE Transactions on Acoustics, Speech and Signal Processing ASSP v.33 no.3 Adaptive Beamforming for Coherent Signals and Interference Shan, T.J.;Kailath, T.
  10. Transactions of ASME v.120 Industrial Noise Source Identification by Using an Acoustic Beamforming System Bai, M.R.;Lee.J.
  11. Journal of the Acoustical Society of America v.109 no.5 Visualization of Multiple Incoherent Sources by the Backward Prediction of Nearfield Acoustic Holography Nam, K.U.;Kim, Y.H.