noise coming from a rock concert, (摇滚音乐会)or the sound of karaoke (卡拉OK)coming from your neighbours’ house can be regarded as noise pollution. No matter where the noise comes from, it makes everyone feel uncomfortable. Noise levels are measured(测量) in decibels...
Noise levels in decibels were measured during these observation episodes. Average noise level and noise variability (i.e., the average standard deviation of noise level across observation episodes) were related to child wellbeing, over and above child and childcare characteristics. Both relations were...
This topic will be about the science of acoustics, the study of sound, in relation to urban environments such as cities. In the past, researching urban soundscapes was simple. We measured levels of sound in decibels, so I used to take my sound meter and l measured the noise somewhere, an...
Noise in Cities Past research focused on noise level (measured in decibels) and people's responses. Noise 'maps' ● show that the highest noise levels are usually found on roads ● do not show other sources of noise, e.g. when windows are open or people's neighbours are in their ...
There are two sets of requirements depending on the duration of the noise measurement as illustrated in the tables below. Types of affected premises Maximum permitted noise levels (reckoned as the equivalent noise level over the specified period) in decibels (dBA) Day (7am-7pm) Evening (7pm-...
Past research focused on noise level (measured in decibels) and people’s responses. Noise ‘maps’ • show that the highest noise levels are usually found on roads • do not show other sources of noise, e.g. when windows are open or people’s neighbours are in their1 ...
根据文章中的“They were randomly divided into four groups and exposed to various noise levels in the background, from total silence to 50 decibels (分贝), 70 decibels, and 85 decibels. The differences between most of the groups were statistically insignificant; however, the participants in the ...
Understanding the noise levels produced by different construction activities is vital to managing and mitigating their potential impact. Noise levels are usually measured in decibels (dB), which provide a logarithmic scale to quantify the power or intensity of sound. ...
“The rising noise pollution in cities will become a top environmental threat(威胁), the United Nations (UN) said in a report on Feb17. It asks governments to take action as soon as possible. What is noise pollution? According to the UN, unwanted noise above 65 decibels (dB,分贝) is...
One key takeaway aboutdecibelsis that even small increases indecibelscan result in significantlylouder sounds. Therefore, understanding and managingsound levelsis crucial in various aspects of life, from protecting ourhearinghealth to managingnoisepollution in our environment. ...