• 제목/요약/키워드: Array Microphone

검색결과 184건 처리시간 0.034초

마이크 어레이를 이용한 네트워크 기반의 침입탐지 시스템 (Internet based Intruder detecting system Using Micropnone array)

  • 김종화;유현호;권민욱
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2006년도 하계종합학술대회
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    • pp.363-364
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    • 2006
  • The direction of arrival of the sound signal can be derived from the time differences at the microphone array and the motor controls the camera to point at the direction of the sound signal. You can get through to the homepage and confirm the camera image on a client computer which connects to the server computer through Internet.

  • PDF

마이크 어레이를 이용한 네트워크 기반의 침입탐지 시스템 (Internet based Intruder detecting system Using Micropnone array)

  • 김종화;유현호;권민욱
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2006년도 하계종합학술대회
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    • pp.341-342
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    • 2006
  • The direction of arrival of the sound signal can be derived from the time differences at the microphone array and the motor controls the camera to point at the direction of the sound signal. You can get through to the homepage and confirm the camera image on a client computer which connects to the server computer through Internet.

  • PDF

주파수영역 빔형성 기법을 이용한 3차원 소음원 가시화 (Study on 3D Sound Source Visualization Using Frequency Domain Beamforming Method)

  • 황은수;이재형;이욱;최종수
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2009년도 춘계학술대회 논문집
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    • pp.490-495
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    • 2009
  • An approach to 3D visualization of multiple sound sources has been developed with the application of a moving array technique. Frequency-domain beamforming algorithm is used to generate a beam power map and the sound source is modeled as a point source. When a conventional delay and sum beamformer is used, it is considered that 2D distribution of sensors leads to have deficiency in spatial resolution along a measurement distance. The goal of moving an array in this study is to form 3D array aperture surrounding multiple sound sources so that the improved spatial resolution in a virtual space can be expected. Numerical simulation was made to examine source localization capabilities of various shapes of array. The 3D beam power maps of hemispherical and spherical distribution are found to have very sharp resolution. For experiments, two sound sources were placed in the middle of defined virtual space and arc-shaped line array was rotated around the sources. It is observed that spherical array show the most accurate determination of multiple sources' positions.

  • PDF

주파수영역 빔형성 기법을 이용한 3차원 소음원 가시화 (Study on 3D Sound Source Visualization Using Frequency Domain Beamforming Method)

  • 황은수;이재형;이욱;최종수
    • 한국소음진동공학회논문집
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    • 제19권9호
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    • pp.907-914
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    • 2009
  • An approach to 3D visualization of multiple sound sources has been developed with the application of a moving array technique. Frequency domain beamforming algorithm is used to generate a beam power map and the sound source is modeled as a point source. When a conventional delay and sum beamformer is used, it is considered that 2D distribution of sensors leads to have deficiency in spatial resolution along a measurement distance. The goal of moving an array in this study is to form 3D array aperture surrounding multiple sound sources so that the improved spatial resolution in a virtual space can be expected. Numerical simulation was made to examine source localization capabilities of various shapes of array. The 3D beam power maps of hemispherical and spherical distribution are found to have very sharp resolution. For experiments, several sound sources were placed in the middle of defined virtual space and arc-shaped line array was rotated around the sources. It is observed that spherical array shows the most accurate determination of multiple sources' positions.