The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
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Binaural Directivity Pattern Simulation of the KEMAR Head Model with Two Twin Hearing Aid Microphones by Boundary Element Method

  • Jarng Soon Suck (Dept. of Information, Control & Instrumentation, Chosun University) ;
  • Kwon You Jung (Dept. of Information, Control & Instrumentation, Chosun University) ;
  • Lee Je Hyeong (Dept. of Information, Control & Instrumentation, Chosun University)
  • Published : 2005.09.01
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Abstract

Two twin microphones may produce particular patterns of binaural directivity by time delays between twin microphones. The boundary element method (BEM) was used for the simulation of the sound pressure field around the head model in order to quantify the acoustic head effect. The sound pressure onto the microphone was calculated by the BEM to an incident sound pressure. Then a planar directivity pattern was formed by four sound pressure signals from four microphones. The optimal binaural directivity pattern may be achieved by adjusting time delays at each frequency while maintaining the forward beam pattern is relatively bigger than the backward beam pattern.

Keywords

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