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This paper presents a data processing algorithm for determining the directional pattern using an acoustic microphone array. The basic delay and sum and filter and sum algorithms were used in its development, and the detrending, nearest neighbor interpolation, and mutual correlation functions were used. The geometric characteristics of the linear array were also selected. For 8 microphones, a spacing of 8.5 cm between them was chosen to obtain results in the form of an 11-sector pattern for a sampling frequency of 20000 Hz. The most accurate result of the experiment conducted in a semi-anechoic chamber is presented. The conclusion about the performance of the algorithm and the accuracy of the obtained data is formulated.

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Development of an Acoustic Data Processing Algorithm Using a Microphone Array

  • 会议论文

  • 发表日期：

    2025年

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  • Daniil A. Laukhin,
  • Anna S. Drankova,
  • Vyacheslav A. Shchukin,
  • Olga A. Ivanova,
  • Mikhail V. Ivanov

摘要

This paper presents a data processing algorithm for determining the directional pattern using an acoustic microphone array. The basic delay and sum and filter and sum algorithms were used in its development, and the detrending, nearest neighbor interpolation, and mutual correlation functions were used. The geometric characteristics of the linear array were also selected. For 8 microphones, a spacing of 8.5 cm between them was chosen to obtain results in the form of an 11-sector pattern for a sampling frequency of 20000 Hz. The most accurate result of the experiment conducted in a semi-anechoic chamber is presented. The conclusion about the performance of the algorithm and the accuracy of the obtained data is formulated.