题型:阅读理解 题类:常考题 难易度:普通
广东省潮州市2018-2019学年高二下学期英语期末教学质量检测试卷
Noise pollution in cities is causing our health to suffer: one in five Europeans is regularly exposed to sound levels at night that could significantly damage their health, leading to diseases, sleep difficulties and stress. Researchers in Belgium have developed an app called NoiseTube that allows everyone to transform their smartphone into a sound level meter (仪表).
NoiseTube works by recording sound levels and GPS locations. Once launched the app shows decibel (分贝) levels of green or red depending on the level of noise. That information is then sent to the NoiseTube server via the Internet where a "noise map" is produced and then made available to the user.
The project started in 2008 as a new form of data gathering, one that was close to people and of a social concern. "Sound was an obvious choice because everyone has a microphone on their mobile phone, and noise pollution, along with air pollution is an environmental concern. Often the two go hand in hand," D'Hondt of the NoiseTube project said.
Since its launch, the app has been popular with community groups who want to monitor their own noise levels. They don't think that city produced noise maps give an enough explanation of the level of noise they are experiencing. City produced noise maps are based on statistical models involving very few actual measurements. NoiseTube on the other hand gives a detailed account of the level of noise experienced at a specific time and location. "Ten people walking the same area from 9am to 10am every day for one week can make a valid (有效的) and detailed map for an area of a couple of blocks," D'Hondt said.
So far these sorts of noise maps have been produced for a number of European cities. The app has been downloaded by 10, 000 people with 2, 700 people registered on the NoiseTube website.
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