Improvement of signal to noise ratio for speech under noisy environment

Bibliographic Information

Other Title
  • 雑音環境下での音声のSN比の改善

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Description

This paper presents a method for the noise reduction under the noisy environment with consideration of wavelength constant using a microphone array,and evaluates the performance of this method for the improvement of speech recognition rate.For noise reduction, we fundermentally utilizes the differences among the wavelength constants of respective sound waves with respect to the axis of the microphone array.The experimental noise reduction test with digits and a band limited noise as the external source in an anechic chamber and speech recognition test for noise reduced digits give a feasible improvement of speech recognition rate,that amounts to more than 93% for the range of signal to noise ratio greater,than 5dB.

Journal

  • Technical report of IEICE. EA

    Technical report of IEICE. EA 93 (347), 25-32, 1993-11-26

    The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

  • CRID
    1574231877152610816
  • NII Article ID
    110003284262
  • NII Book ID
    AN10164817
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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