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C, WANG Xiaohui, SUN Xiaoye. Design of self-adaptive echo canceller[J]. Journal of Mine Automation, 2017, 43(10): 97-100.. DOI: 10.13272/j.issn.1671-251x.2017.10.020
Citation: C, WANG Xiaohui, SUN Xiaoye. Design of self-adaptive echo canceller[J]. Journal of Mine Automation, 2017, 43(10): 97-100.. DOI: 10.13272/j.issn.1671-251x.2017.10.020
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Design of self-adaptive echo canceller

  • College of Communication and Information Engineering, Xi''an University of Science and Technology, Xi''an 710054, China

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  • In view of problem of echo interference in voice communication of rescue communication system, a self-adaptive echo canceller was designed based on self-adaptive filter using normalized least mean square and voice detection module. Working principle and design scheme of the self-adaptive echo canceller were introduced. The test results show that the self-adaptive echo canceller has rapid convergence speed, which can converge to below -30 dB within 1 s, and basically eliminate audio signal echo.
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