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Speech intelligibility and speech quality of modified loudspeaker announcements examined in a simulated aircraft cabin

机译：在模拟飞机机舱中检查的修改后扬声器的语音清晰度和语音质量

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摘要

Acoustic modifications of loudspeaker announcements were investigated in a simulated aircraft cabin to improve passengers' speech intelligibility and quality of communication in this specific setting. Four experiments with 278 participants in total were conducted in an acoustic laboratory using a standardised speech test and subjective rating scales. In experiments 1 and 2 the sound pressure level (SPL) of the announcements was varied (ranging from 70 to 85 dB(A)). Experiments 3 and 4 focused on frequency modification (octave bands) of the announcements. All studies used a background noise with the same SPL (74dB(A)), but recorded at different seat positions in the aircraft cabin (front, rear). The results quantify speech intelligibility improvements with increasing signal-to-noise ratio and amplification of particular octave bands, especially the 2 kHz and the 4 kHz band. Thus, loudspeaker power in an aircraft cabin can be reduced by using appropriate filter settings in the loudspeaker system.
机译：在模拟的飞机机舱中研究了扬声器通知的声学修改，以提高在此特定环境下乘客的语音清晰度和通信质量。使用标准语音测试和主观评定量表，在声学实验室中进行了总共278名参与者的四个实验。在实验1和2中，公告的声压级（SPL）有所不同（范围从70到85 dB（A））。实验3和4专注于公告的频率修改（八度音阶）。所有研究均使用具有相同SPL（74dB（A））的背景噪声，但记录在飞机机舱（前，后）的不同座位位置。结果通过提高信噪比和放大特定八度频段（尤其是2 kHz和4 kHz频段）来量化语音清晰度的提高。因此，可以通过在扬声器系统中使用适当的滤波器设置来降低飞机机舱中的扬声器功率。

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  • 来源
    《Ergonomics》 |2014年第12期|1806-1816|共11页
  • 作者

    Sibylle Pennig; Julia Quehl; Martin Wittkowski;

  • 作者单位

    German Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, Germany;

    German Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, Germany;

    German Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, Germany;

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

    speech intelligibility; sound design; loudspeaker announcements; aircraft cabin;

    机译：语音清晰度声音设计;扬声器公告;机舱;

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