“If you look at Siri three to four years ago, it barely understood you. “It will never be 100% accurate, but the more data we have, the more accurate it will be,” she said.
They’ve also worked with speech therapists to identify key problem areas for people learning English in different parts of the world. Van said she and the ELSA team have fed “hours and hours” of speech data into the system. That’s especially true for people whose native languages don’t include some of the most common sounds heard in English. “When people can’t hear the difference themselves, hearing an American voice is a good step but it’s not enough unless you have an ear for languages,” Van said. This is essential to learning English effectively, Van said.
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If ELSA detects a mispronunciation, it tells the user not only how the word should sound, but also how to move the tongue and lips to form the correct word. They’re then lead through a series of vocabulary words and phrases, and ELSA's algorithms analyze their speech.
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Users can access different curriculum options based on their interests, such as travel or professional settings. ELSA, which stands for English Language Speech Assistant, is a mobile app that uses AI to help people improve their pronunciation. In March 2016, Van debuted ELSA during SXSW, and t he product won the SXSWedu launch competition. But after surveying her friends, many of whom also grew up learning English in Vietnam, “I know that the market is there.” Companies in the Bay Area “don’t pay attention to language learning because they’re mostly American,” she said.
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