Three in 10 Taipei residents live in areas that are “noisy” by WHO standards, soundscape maps created by an Academia Sinica research team showed.
Chan Ta-chien (詹大千), a research fellow at the institution’s Research Center for Humanities and Social Sciences, led his team to create two-dimensional and three-dimensional maps with environmental and weather data.
The WHO recommends reducing exposure to daytime outdoor noise levels to below 53 decibels, a standard that areas where about 30 percent of Taipei residents live fail to meet, and 45 decibels during the night, which areas where 25 percent of Taipei residents live fail to meet.
Photo copied from the map platform Web site
Noise has several effects on people, the Environmental Protection Administration said on its Web site, adding that noise levels of 50 to 70 decibels might cause a light discomfort in some people and long-term exposure to noise of more than 70 decibels can cause anxiety-related symptoms.
Taipei’s Daan (大安) and Zhongshan (中山) districts are especially noisy at night, while areas close to Taipei International Airport (Songshan airport) and its flight paths, such as part of Songshan District (松山) and the Taipei Flora Expo Park (台北花博公園), are noisy during the day, Chan said.
Using the platform provided by the National Applied Research Laboratories’ National Center for High-performance Computing, the team drew the soundscape maps for Taipei and Taichung based on statistical models.
The models were created with noise monitoring data from local departments of environmental protection, real-time traffic data from transportation units, weather data from the Central Weather Bureau, traffic information, and socioeconomic and population data.
Noise has been the most frequently reported environmental hazard in Taipei in the past few years, Chan said.
Most residential buildings in Taiwan are near commercial buildings, so the standard of permissible noise is lower than in the WHO guidelines, he said.
However, the noise problems should still be carefully investigated, as the international focus is increasingly on noise pollution, he said, citing EU standards and the UN Sustainable Development Goals.
Taiwan conducts noise tests only twice every season, so it is difficult to know how many people are exposed to noise, he said.
The team developed a “soundbox” equipped with digital sensors that can transfer real-time environmental sound data to the researchers, he said.
The team is seeking to link the boxes with air quality sensors, he added.
Data from traffic monitoring devices installed at more than 700 road sections in Taipei can detect the most serious sources of traffic noise through reverse calculation, he said.
Chan said that the soundscape maps are updated hourly and can be accessed at this site.
Wu Chen-chi (吳振吉), a professor in National Taiwan University’s Department of Otolaryngology, said that noise increases the risk of cardiovascular disease, hearing loss and dementia.
People who are exposed to long-term noise face a higher risk of depression, so those who feel unwell and suspect that noise is the cause should seek medical attention as soon as possible, he said.
Chan said people who live on the lower floors of buildings next to city streets should install sound insulation doors and windows to reduce their exposure.
The project was a cooperation with Lin Bo-cheng (林柏丞), an assistant professor in National Taipei University’s Department of Real Estate and Built Environment; Chen Ling-jyh (陳伶志), an associate research fellow at Academia Sinica’s Institute of Information Science; Hwang Jing-shiang (黃景祥), a research fellow at Academia Sinica’s Institute of Statistical Science; and Wu Bing-sheng (吳秉昇), an associate professor in National Taiwan Normal University’s Department of Geography.
The WHO in its Environmental Noise Guidelines for the European Region said that noise exposure increases the risk of high blood pressure, sleep deprivation and mental stress.
Research published in the European Heart Journal has showed that 6 percent of people who live in an environment with an average noise level of more than 50 decibels are at risk of developing high blood pressure.
Foreign tourists who purchase a seven-day Taiwan Pass are to get a second one free of charge as part of a government bid to boost tourism, the Tourism Administration said yesterday. A pair of Taiwan Passes is priced at NT$5,000 (US$156.44), an agency staff member said, adding that the passes can be used separately. The pass can be used in many of Taiwan’s major cities and to travel to several tourist resorts. It expires seven days after it is first used. The pass is a three-in-one package covering the high-speed rail system, mass rapid transport (MRT) services and the Taiwan Tourist Shuttle services,
Drinking a lot of water or milk would not help a person who has ingested terbufos, a toxic chemical that has been identified as the likely cause of three deaths, a health expert said yesterday. An 83-year-old woman surnamed Tseng (曾) and two others died this week after eating millet dumplings with snails that Tseng had made. Tseng died on Tuesday and others ate the leftovers when they went to her home to mourn her death that evening. Twelve people became ill after eating the dumplings following Tseng’s death. Their symptoms included vomiting and convulsions. Six were hospitalized, with two of them
DIVA-READY: The city’s deadline for the repairs is one day before pop star Jody Chiang is to perform at the Taipei Dome for the city’s Double Ten National Day celebrations The Taipei City Government has asked Farglory Group (遠雄集團) to repair serious water leaks in the Taipei Dome before Friday next week, Taipei Mayor Chiang Wan-an (蔣萬安) said yesterday, following complaints that many areas at the stadium were leaking during two baseball games over the weekend. The dome on Saturday and Sunday hosted two games in tribute to CTBC Brothers’ star Chou Szu-chi (周思齊) ahead of his retirement from the CPBL. The games each attracted about 40,000 people, filling the stadium to capacity. However, amid heavy rain, many people reported water leaking on some seats, at the entrance and exit areas, and the
BIG collection: The herbarium holds more than 560,000 specimens, from the Japanese colonial period to the present, including the Wulai azalea, which is now extinct in the wild The largest collection of plant specimens in Taiwan, the Taipei Botanical Garden’s herbarium, is celebrating its 100th anniversary with an exhibition that opened on Friday. The herbarium provides critical historical documents for botanists and is the first of its kind in Taiwan, Taiwan Forestry Research Institute director Tseng Yen-hsueh (曾彥學) said. It is housed in a two-story red brick building, which opened during 1924. At the time, it stored 30,000 plant specimens from almost 6,000 species, including Taiwanese plant samples collected by Tomitaro Makino, the “father of Japanese botany,” Tseng said. The herbarium collection has grown in the century since its