摘要
本文提出分别采用“不愉悦度”和“不愉悦概率”作为衡量低频噪声主观感觉的整体评价指标,并确定出评价等级与相应的计算公式。在此基础上,以人工产生的低频纯音为研究对象,结合“5点4级”评价尺度,采用语义细分法,设计并完成了实验室主观评价实验。分析处理实验数据后发现: (1)“不愉悦度”与“不愉悦概率”两种感觉指标的评价结果之间及其各自所确定的评价等级之间存在较高相关性;(2)A,C及线性声级均可用于衡量低频纯音的不愉悦度,三者的衡量效果基本一致; (3)不同频率低频纯音的不愉悦度随声压级的变化趋势不同。
In this paper, two new indices Unpleasantness （up） and Unpleasant Probability （Puv） are proposed to evaluate the subjective impressions on low-frequency noise. The definition and rating scales are given. Based on these, a laboratory-scale jury test which adopts Semantic Differential method and an auxiliary ＂5-points, 4-ranks＂ rating scale for low-frequency pure tone, was carried out. On inspecting the obtained data, it is found that： （1） remarkable correlativity occurs between up and Puv, also between their rating scales; （2） we can use A-weighted, C-weighted or linear-weighted sound level to evaluate the subjective response of low-frequency pure tone; and the results are well accordant with each other; （3） for pure tones with different low-frequencies the trends of subjective response with sound level differ in the two indices.
出处
《应用声学》
CSCD
北大核心
2006年第5期319-324,F0003,共7页
Journal of Applied Acoustics
关键词
低频噪声
不愉悦概率
主观评价
语义细分法
Low-frequency noise, Unpleasant probability, Subjective evaluate, Semantic differential method
