低频噪声声品质评价实验研究(英文)

Jury studies of sound quality for low frequency noise

以等响处理后的 75 个稳态低频噪声样本为例, 采用成对比较法, 设计并完成了有 24 位评价者参与的大规模实验室主观评价实验。研究发现: 1)“不愉悦度”能够充分体现人对低频噪声的主观感受, 评价效果理想; 2) 存在决定低频噪声不愉悦感的频率或频带; 响度在决定稳态低频噪声的不愉悦感程度中占主导地位, 尖锐度的影响亦不容忽视; 与总声能相比, 低频段声能比与频谱形状在决定不愉悦程度时, 作用更大一些。

Using 75 varied low frequency noise samples with adjusted-loudness as sound stimuli,we investigate sound quality for low frequency noise with paired comparison method. The jury testing with a total of 24 jurors has been carried out to explore the relationship between physical properties of low frequency noise and perceptual ratings. It is shown that the proposed ‘unpleasantness＇ can be used as an reasonable and effective metric to indicate human＇s general reaction to low frequency noise, and some crucial factors such as low frequency components and its energy ratios, loudness, temporal and spectral characteristics, and sharpness could influence or even govern the sound quality of low frequency noise.