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An improved method to enhance high-frequency speech intelligibility in noise

机译：一种提高高频语音清晰度的改进方法

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摘要

To improve high-frequency speech intelligibility, an improved frequency compression method for high-frequency hearing-impaired patients was evaluated compared to conventional frequency compression scheme and their own hearing aids. The first step in this method was to decompose speech frame for three groups of parameters of the sinusoidal speech model: amplitudes, frequencies, and phases. Frequencies above a pre-calculated cut-off frequency (CF) were compressed and shifted to a lower frequency range to improve high-frequency intelligibility. Different from general methods, the frequency compression ratio was set according to speech intelligibility percentage in different frequency ranges. To avoid spectral distortions in the sounds, the frequency spectrum was split into six bands according to octaves. In addition, phases of compressed frequencies were randomly set to improve the envelope of the compressed signal. In subjective evaluation for Chinese speech identification, six experienced hearing aid users with a severe to profound sensorineural hearing loss were tested. After 6 weeks of training and testing, results showed the mean speech identification was improved at least 1% points in comparison with conventional frequency compression scheme.
机译：为了提高高频语音的清晰度，与传统的频率压缩方案及其自己的助听器相比，评估了一种针对高频听力受损患者的改进的频率压缩方法。该方法的第一步是分解正弦语音模型的三组参数的语音帧：幅度，频率和相位。将高于预先计算的截止频率（CF）的频率压缩并移至较低的频率范围，以提高高频清晰度。与一般方法不同，根据不同频率范围内语音清晰度的百分比来设置频率压缩率。为了避免声音中的频谱失真，根据八度将频谱分为六个频段。此外，随机设置压缩频率的相位以改善压缩信号的包络。在对中文语音识别的主观评估中，测试了六名经验丰富的助听器使用者，他们的听力损失严重至严重。经过6周的训练和测试，结果表明，与传统的频率压缩方案相比，平均语音识别能力至少提高了1％。

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  • 来源
    《Applied Acoustics》 |2013年第1期|71-78|共8页
  • 作者

    Ruiyu Liang; Ji Xi; Jian Zhou; Cairong Zou; Li Zhao;

  • 作者单位

    College of Computer and Information, Hohai University, Nanjing 210098, China,School of Information Science and Engineering, Southeast University, Nanjing 210096, China,Changzhou Key laboratory of Sensor Networks and Environmental Sensing, Hohai University, Changzhou 213022, China;

    College of Computer and Information, Hohai University, Nanjing 210098, China,School of Information Science and Engineering, Southeast University, Nanjing 210096, China,Changzhou Key laboratory of Sensor Networks and Environmental Sensing, Hohai University, Changzhou 213022, China;

    School of Information Science and Engineering, Southeast University, Nanjing 210096, China;

    School of Information Science and Engineering, Southeast University, Nanjing 210096, China;

    School of Information Science and Engineering, Southeast University, Nanjing 210096, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    high-frequency hearing loss; frequency compression; hearing aid; sinusoidal model; speech intelligibility in noise;

    机译：高频听力损失;频率压缩助听器;正弦模型语音中的语音清晰度;

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