Psychological evaluation of temporally varying sounds with LAeq and noise criteria in Japan.
Psychological evaluation of temporally varying sounds with LAeq and noise criteria in Japan.
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日本使用 LAeq 和噪声标准对随时间变化的声音进行心理评估。
DOI：
10.1250/ast.21.319
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
S. Namba
中科院分区：
文献类型：
--
作者：
S. Kuwano;S. Namba
作者从上世纪60年代开始研究时变声音的印象，研制了时变声音产生装置。从那以后，人们进行了许多心理学实验，发现LAeq与主观印象有很好的对应关系。1998年9月，日本修订了《噪声环境质量标准》，采用LAeq作为噪声措施。LAeq确实有很多优点，是测量各种噪声的好方法。然而，当采用它来确定各种噪声的标准和预测噪声的主观印象时，有一些问题需要考虑。例如，(1)当声音具有突出的频率成分时，a加权的有效性，(2)声音的定性方面的影响，以及(3)声源的认知方面的影响。在实验数据的基础上对这些问题进行了讨论。
The authors started the study of the impression of temporally varying sounds in 1960’s by developing the equipment to generated tempoally varying sounds.Since then many psychological experiments have been conducted and it was found that LAeq shows good correspondence with subjective impressions.In Japan in September 1998, Environmental Quality Standard for Noise was revised adopting LAeq as a noise measure.It is true that LAeq has many advantages and is a good measure of various noises.However, when it is adopted to determine a criteria of various kinds of noise and to predict subjective impressions of noises, there are some problems to be considered.They are, for example, (1)validity of A-weighting when sounds have prominent frequency components, (2)effect of qualitative aspects of sounds, and(3)effect of cognitive aspects of sound sources.These topics are discussed on the basis of the experimental data.