OLYMPICS/ Facelift
Computerized polyglots to serve Beijing Games
(Xinhua)
Updated: 2007-09-12 08:59
BEIJING -- A foreigner might find it easier to learn about Beijing even if he doesn't speak Chinese during the 2008 Olympic Games in Beijing.
For example, if he wants to taste Chinese food and yet doesn't know where he should go, he may use his roaming cell phone to dial a number and speak his inquiry. Seconds later, he will get ample information in English from a computerized polyglot.
Pan Jielin, who works on employing speech recognition technologies in Olympics-related service, told Xinhua Beijing will be the first city in the world to extensively offer the multi-lingual computerized information service.
Beijing tourism authorities estimated Beijing will host at least 550,000 foreign and 2.2 million domestic visitors during the Olympic Games.
"We now only have Chinese and English services, but will expand to other languages including French, German and Spanish," said Pan, associate director of Thinkit Speech Laboratory at the Chinese Academy of Sciences (CAS) Institute of Acoustics.
Pan's lab has developed the embedded multi-lingual speech recognition engine, which picks up acoustic features of human speech, coverts sound signals to bytes, compares discourses of speakers with various syllables in different languages, and optimizes match-ups from algorithmic processing. In a matter of seconds, speakers could get response from the system.
"The core technology of speech recognition applies to any language if we get big enough speech databases," Pan said.
"We are very competitive in processing the Chinese language because we're able to get excellent Chinese databases, including those of dialects," said Zhao Qingwei, the lab's chief technology officer, citing that his lab bought native-speaking English databases from American companies.
Although quite competent at recognizing mandarin Chinese spoken by TV newscasters, Pan said the system performs undesirably while keeping notes of casual conversations.
"We're quite confident of recognizing more than 90 percent of speeches of certain topics, such as road and traffic information, Olympic competition results, Olympic venues information, and weather information," Pan said.
Pan's team is focusing on improving recognition rate of spoken languages and reducing noise affects.
The lab got contracts from Capinfo Limited Company, the solely authorized multi-lingual service provider for the Beijing Olympics, for equipping telecommunication platforms and information booths along main Beijing streets with the speech-recognition engine.
China Mobile, the country's largest monopoly over mobile telecommunication, has already employed the recognition technology in its new valued-added service, Coloring Ring Back Tone. Subscribers could easily find popular melodies, even if they don't know their titles, by just humming a few segments.
"We look forward to earning smart returns from the profits we might share with China Mobile," Pan said.
The speech and melody recognition technology is also welcomed by entertainment places such as Karaoke arcades. Karaoke fans, in some places where the recognition system has been installed, are able to search songs by singing a little of them.
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