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Journal of ship and ocean technology v.8 no.3, 2004년, pp.18 - 25   피인용횟수: 1

A New Sound Reception System using a Symmetrical Microphone Array and its Numerical Simulation

Choi Jae-Woong    (Marine Research Institute, Samsung Heavy Industries   ); Kim Ki-Jung    (Marine Research Institute, Samsung Heavy Industries  );
  • 초록

    Sound reception system is required to detect the sound and the quadrantal direction of the other ship's horn sound, to overcome the effects of enclosed wall for navigation space, functioning as a sound barrier. However, the realized systems can only provide quadrantal information of the other ship. This paper presents a new arrangement of microphones, having geometrically symmetric deployment with the same distances between sensors and the same angles between adjacent sensors with respect to the geometrical center. The sound pressures received at microphones are transformed into the related envelope signals by applying Hilbert transform. The time delays between microphones are estimated by the correlation functions between the derived envelope signals. This envelope base processing mitigates the noises related to the reflection by ship and sea surface. Then, the directional information is easily defined by using the estimated time delays. The suggested method is verified by the generated signals using boundary element method for a small ship model with sea surface wave. The estimated direction is quite similar to the true one and therefore the proposed approach can be used as an efficient sound reception system.


  • 주제어

    sound reception system .   hilbert transform .   time delay .   horn sound.  

  • 참고문헌 (5)

    1. Johnson, D.H. and D.E. Dudgeon. 1993. Array Signal Processing: Concepts And Techniques, Prentice-Hall, Inc 
    2. Kirkup, S. 1998. The Boundary Element Method In Acoustics, Integrated sound software 
    3. SOLAS Chapter 5, Regulation 19 Carriage Requirements For Shipborne Navigational Systems And Equipment 
    4. Attenborough, K. and P. Boulanger. 2003. Effects of surface roughness or: outdoor acoustics, Internoise 2003, 3373-3380 
    5. Bendat, J.S. and A.G. Piersol. 1986. Random Data: Analysis And Measurement Procedures, Second edition, John Wiley & Sons 
  • 이 논문을 인용한 문헌 (1)

    1. Kim, Hyungjong ; Kim, Jeongchang 2014. "A study on digital sound reception systems for ships" 한국마린엔지니어링학회지 = Journal of the Korean Society of Marine Engineering, 38(9): 1125~1130     

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