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首页> 外文期刊>Acta acustica united with acustica >Generating Sound Stimuli with Given Emergence Level and Low Frequency Content by Mixing Recordings
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Generating Sound Stimuli with Given Emergence Level and Low Frequency Content by Mixing Recordings

机译：通过混合录音，通过给定的出现水平和低频率内容产生声音刺激

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摘要

Noise annoyance and other effects of noise are reasonably correlated with A-weighted sound levels. Currently, the influence of low-frequency content and of sound emergence level (i.e. the sound level difference between total noise and residual noise) on effects of noise are being assessed in laboratories using stimuli based on recordings. Standards intended for regulations often include penalties depending on these factors. The difference between C- and A-weighted sound levels is frequently used as a descriptor of low frequency content. This work proposes a method to optimize the search and combination of a subset of audio files from a large set of noise sources recordings in order to achieve an environmental noise stimulus with previously specified values of factors (i) sound emergence level, (ii) C- A-weighted levels difference, (iii) A-weighted equivalent continuous sound level and (iv) duration of stimulus. The method is implemented, and one hundred stimuli are generated following a full factorial experimental design varying these four factors. The resulting stimuli show small differences between specified and measured values. The mean difference for factors i-iii is 0.46 dB and the maximum is 2.3 dB.
机译：噪音烦恼和噪声的其他影响与加权声级合理地相关。目前，利用基于录音的刺激在实验室中评估了低频内容和声音射出水平的影响（即总噪声与剩余噪声之间的声级差异）。旨在法规的标准通常包括根据这些因素的处罚。 C-和加权声级之间的差异经常用作低频内容的描述符。这项工作提出了一种方法来优化来自大集噪声源记录的音频文件的搜索和组合，以便实现具有先前指定的因素值（i）声音级别（ii）c的环境噪声刺激 - 加权水平差异，（iii）加权等效的连续声级和（iv）刺激持续时间。该方法实施，在完整的阶乘实验设计之后产生一百个刺激，改变这四个因素。由此产生的刺激显示指定和测量值之间的小差异。因素I-III的平均差异为0.46 dB，最大值为2.3 dB。

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  • 来源
    《Acta acustica united with acustica》 |2017年第5期|共13页
  • 作者

    Accolti Ernesto; Miyara Federico; di Sciascio Fernando;

  • 作者单位

    Univ Nacl San Juan CONICET Inst Automat Avda San Martin 1109 Oeste San Juan Argentina;

    Univ Nacl Rosario Lab Acust &

    Electroacust Riobamba 245 Bis Rosario Santa Fe Argentina;

    Univ Nacl San Juan CONICET Inst Automat Avda San Martin 1109 Oeste San Juan Argentina;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 声学;
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