Because of recent things relating to China I am going to learn some things;
My homework?
Noise in China....
Noise pollution at night riles restless residents
By ZHENG JINRAN (chinadaily.com.cn)Updated: 2016-09-02 19:12
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Residents in 308 major cities last year experienced increased noise levels at night compared with daytime, with those living by major roads suffering the most, an annual report on noise pollution found.
The Ministry of Environmental Protection released the report on Wednesday, saying that among the 308 cities with monitoring stations, 92.4 percent of daytime readings met national standards.
However, that percentage fell to 74.3 percent at night, according to the report on the prevention and control of environmental noise pollution.
The 31 capital cities recorded a poorer performance at night, with only 61.8 percent of readings meeting national standards, the report said.
Among the 31 capitals, Guiyang in Southwest China’s Guizhou province topped the readings with 58.9 decibels, followed by Harbin in Northeast China’s Heilongjiang province.
A large number of buildings under construction is the reason for noise pollution in Guiyang, while in Harbin, people’s living habits are to blame, said Wen Xiangcai, a researcher from the China National Environmental Monitoring Center, the People’s Daily reported.
The ministry’s report said Beijing ranked 24th and Shanghai ranked 29th among the 31 capitals last year.
Noise monitoring stations by major roads recorded an increase in the number of readings failing to meet national standards, it added.
A report by the World Health Organization showed that noise pollution can affect people’s mental health and increase the risk of suffering cardiovascular diseases, thus making it a growing concern for people.
Residents voiced their concerns about noise pollution last year, with environmental protection bureaus nationwide receiving more than 354,000 complaints, accounting for 35.3 percent of the total complaints related to environmental pollution in China.
Out of the total number of complaints, 50.1 percent were related to building construction and 21 percent were related to social activities, followed by protests about industrial production and traffic noise, the report said.
The ministry approved environmental impact assessments of 159 construction projects, of which 131 were responsible for noise pollution, the report said.
These projects have invested 4.22 billion yuan ($632 million) in reducing and controlling noise pollution, the report added.
“Different from air and water pollution, noise pollution usually lasts for a shorter period of time, making it difficult to investigate after a public complaint,” Liang Yunping, an official with the Beijing Municipal Environmental Monitoring Center, told China Daily.
Beijing has issued strict regulations targeting noise produced by industrial production, social activities and other sources to control noise pollution, she said.
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quick said
to recognize a voice trigger and the ensuing user commands in noisy environments. This is an enabling technology for always-on voice in a number of common use cases....
So those slots in China, the AEC is MORE important than the quiet of the USA?
Noise Pollution in Chinese Cities May Lead to Hearing Loss, Study Finds
By Jocelyn Richards, March 6, 2017
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![[IMG]](https://www.thatsmags.com/image/view/201703/fullsizeoutput_5c1.jpeg)
- ranking of 50 cities released last Friday, China's southern metropolis of Guangzhou suffers from the worst noise pollution in the world (number one), and fares little better in rates of hearing loss, where it ranks fifth after Delhi, Mumbai, Istanbul and Cairo.
Beijing is close behind as the sixth most noise-polluted city in the world, followed by Shanghai at No. 12, Taipei at No. 14 and Hong Kong at No. 17. Of the four, only Taipei ranks in the top 10 for hearing loss – Beijing ranks 13th and Shanghai 21st.
The rankings show a correlation between hearing loss and noise pollution in 64 percent of cases. Though the results have yet to be submitted for peer-reviewed publication, the findings are significant, and should be a wake-up call for those dwelling in cacophonous urban centers.
The list is based on statistics collected by the World Health Organization and a report from Norwegian-based technology research group SINTEF on noise pollution in cities around the world.
To measure hearing loss in different cities, German company Mimi Hearing Technologies collected information from more than 200,000 people who participated in a hearing test administered via the Mimi smartphone app. Geolocation technology then helped to pinpoint participants' city of residence.
As longtime expats regularly exposed to China's noisy environment, we tried the Mimi hearing test (download it here) out of curiosity and were shocked to discover that while we don't yet suffer from hearing loss, we do hear worse than 91 percent of those in our age group.
Coincidental or not, it’s safe to say smog may not be the only kind of pollution affecting our health here in China.
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map the noise...
Mapping Urban Environmental Noise Using Smartphones
Jinbo Zuo, Hao Xia *, Shuo Liu and Yanyou Qiao
The Institute of Remote Sensing and Digital Earth, No. 20 Datun Road, Chaoyang District, Beijing 100101, China; zuojb@radi.ac.cn (J.Z.); liushuo@radi.ac.cn (S.L.); y56yqiao@irsa.ac.cn (Y.Q.)* Correspondence: xiahao@radi.ac.cn; Tel.: +86-10-6486-2913
Academic Editor: Yu Wang
Received: 27 June 2016; Accepted: 8 October 2016; Published: 13 October 2016
Abstract: Noise mapping is an effective method of visualizing and accessing noise pollution. In this paper, a noise-mapping method based on smartphones to effectively and easily measure environmental noise is proposed.
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