Annoyance Suppression Effect of Narrow-Band Color Noises and Water Sounds on Low-Frequency Tonal Noise

IF 1.7 4区 物理与天体物理
Hao Li, Kean Chen, Han Li, Yunyun Deng, Huanqi Zhao
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Abstract

Due to the increasing noise pollution, noise control has drawn more and more public attention. Different from traditional methods to reduce noise energy such as active and passive noise control, suppressing noise annoyance through adding sounds is another choice. In previous studies, water sounds are usually used to adjust the annoyance of traffic noise, but the suppression effect of the water sounds varies from person to person. Low-frequency tonal noise is one kind of typical and common mechanical noise, i.e., substation noise, whose annoyance is caused by tonal perception and higher energy in low frequency is difficult to suppress even though adding sounds. In this study, different controllable sounds (water sounds and narrow-band color noises) with different masker-to-noise ratios (MNRs) were added to low-frequency tonal noise to investigate the annoyance suppression effect through listening tests. Furthermore, in order to evaluate the quantitative suppression effect, the standard sample method (SSM) was applied in the listening tests to convert the annoyance difference into the difference of equivalent sound pressure level of 1 kHz and 70 dB pure tone (\(\Delta SPL_{1kHz,70dB}\)). Results show that different kinds of water sounds and narrow-band color noises effectively reduce noise annoyance. The optimal result comes from adding one kind of water sound, which reduces the annoyance of substation noise by 27.24%, equivalent to reducing \(\Delta SPL_{1kHz,70dB}\) by 6.5 dB. Finally, the annoyance prediction model of combined noises is established to choose controllable sounds and predict the suppression effect of annoyance.

Abstract Image

窄带彩色噪声和水声对低频音调噪声的恼怒抑制效应
由于噪声污染日益严重,噪声控制越来越受到公众的关注。与主动和被动噪声控制等传统降噪方法不同,通过增加声音来抑制噪声干扰是另一种选择。在以往的研究中,通常采用水声来调节交通噪声的烦扰,但水声的抑制效果因人而异。低频音调噪声是一种典型而常见的机械噪声,即变电站噪声,其烦扰是由音调感知引起的,低频能量较高,即使添加声音也难以抑制。本研究在低频音调噪声中加入了不同掩蔽噪声比(MNR)的可控声音(水声和窄带彩色噪声),通过听力测试来研究其烦扰抑制效果。此外,为了评价定量抑制效果,在听力测试中采用标准样本法(SSM)将烦扰差值转换为 1 kHz 和 70 dB 纯音的等效声压级差值(\(△ SPL_{1kHz,70dB}\) )。结果表明,不同种类的水声和窄带色噪能有效降低噪声干扰。最佳结果来自于增加一种水声,它能将变电站噪声的烦扰度降低 27.24%,相当于将 \(\Delta SPL_{1kHz,70dB}\) 降低 6.5 dB。最后,建立了组合噪声的骚扰预测模型,以选择可控声音并预测骚扰的抑制效果。
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来源期刊
Acoustics Australia
Acoustics Australia ACOUSTICS-
自引率
5.90%
发文量
24
期刊介绍: Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.
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