音声スペクトルの時間変化強調による明瞭性改善手法の提案 Improvement Method of Speech Intelligibility by Enhancement of Spectral Variation

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It is hard to listen to an announcement in a noisy environments such as in a train while running. In this paper, to improve speech intelligibility in a noisy environment, we focused on the time variation of speech spectral representing spectral flux from the analysis result which clear speech has larger spectral flux than normal speech. Therefore, we propose speech enhancement method of spectral variation to improve the sound quality evaluation value of STOI. In the evaluation results of STOI score, enhanced speech by proposed method improved more than original speech in all the SNR conditions (SNR = -5, -10, -15 dB). Also, the significant difference in the dangerous rate of 5% was found in SNR = -10, -15 dB.

It is hard to listen to an announcement in a noisy environments such as in a train while running. In this paper, to improve speech intelligibility in a noisy environment, we focused on the time variation of speech spectral representing spectral flux from the analysis result which clear speech has larger spectral flux than normal speech. Therefore, we propose speech enhancement method of spectral variation to improve the sound quality evaluation value of STOI. In the evaluation results of STOI score, enhanced speech by proposed method improved more than original speech in all the SNR conditions (SNR = -5, -10, -15 dB). Also, the significant difference in the dangerous rate of 5% was found in SNR = -10, -15 dB.

収録刊行物

  • 産業応用工学会論文誌

    産業応用工学会論文誌 6(1), 51-54, 2018

    一般社団法人 産業応用工学会

各種コード

  • NII論文ID(NAID)
    130006507532
  • 本文言語コード
    JPN
  • ISSN
    2189-373X
  • NDL 記事登録ID
    029502703
  • NDL 請求記号
    Z74-J567
  • データ提供元
    NDL  J-STAGE 
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