An exhibition featuring the upcoming 2009 Deaflympics opened Wednesday at Taipei City Hall and will run until September 20, the city's Department of Information and Tourism said. The exhibition features the struggles of some gold medalists in the previous Deaflympics, officials of the department said. The video game device, wii, is being used to allow visitors to the exhibition to simulate the experience of competing in a soundless environment, the officials added. Also, the software in an interactive device will allow hearing impaired and other visitors at the exhibition to communicate by means of sign language, the officials said. The 21st Deaflympics, which will feature competitions in 20 sports, will be held in Taipei City September 5-15 and is expected to attract more than 5,500 athletes and referees from 81 countries. 