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首页> 外文期刊>Building and Environment >Varying the spectral envelope of air-conditioning sounds to enhance indoor acoustic comfort
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Varying the spectral envelope of air-conditioning sounds to enhance indoor acoustic comfort

机译：改变空调声音的频谱范围，以提高室内声学舒适度

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摘要

Sounds of ceiling mounted air-conditioners were recorded at various conditions of classrooms, offices, and libraries. Sound quality was manipulated by varying spectral envelope of the sounds to investigate its effects on acoustic comfort. Tonal components of the sounds were removed, and the sound pressure levels at 250-630 Hz frequency band were varied to generate experimental sounds using original recordings. Subjective auditory tests were conducted by using paired comparison and semantic differential tests. The results showed that sounds without tonal components were preferred over sounds with tonal components. The subjects had a more favorable impression of the sounds which had a larger energy at 250-630 Hz in cases both with and without tonal components. Statistical analysis showed that both tonality and fluctuation strength play major roles as the sound quality metrics which describe the acoustic comfort from the subjects.
机译：在教室，办公室和图书馆的各种条件下都记录了安装在天花板上的空调的声音。通过改变声音的频谱包络来控制声音质量，以研究其对声音舒适度的影响。去除了声音的音调成分，并使用原始录音改变了250-630 Hz频段的声压级以产生实验性声音。主观听觉测试通过配对比较和语义差异测试进行。结果表明，没有声调成分的声音比有声调成分的声音更可取。在有和没有音调成分的情况下，受试者对在250-630 Hz处具有较大能量的声音印象更佳。统计分析表明，音调和起伏强度均作为主要的声音质量指标，描述了对象的听觉舒适度。

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