Americans Bill and Tani Austin's Mission to Help 1 Million People Hear

Last year couple's foundation gave out 165,000 free hearing aids worldwide.
3:00 | 01/21/14

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Transcript for Americans Bill and Tani Austin's Mission to Help 1 Million People Hear
Finally tonight, we want to tell you about a husband and wife team delivering a kind of miracle around the world. ABC's Neal Karlinsky says their goal is to help 1 million people, who never thought they'd be smiling because of a couple who are "America strong." Reporter: In the shadow of angkor wat, Cambodia, and some of the oldest temples on Earth, the sounds of a modern day gift. Hello, hello, hello? Reporter: Hundreds have come here, the very young and the very old all of them deaf or nearly so and looking for a miracle. You really have a lot of hopes riding on today. Americans, led by bill and Tani Austin, have come here to prove that most aren't deaf at all. They say 95% percent of the world's so-called deaf are merely impaired but have no way to do anything about it. We watch Tani fit 12-year-old sarien with powerful hearing AIDS. Her mother says she is completely deaf. As her mother wipes away tears, sarien hears and tries to speak for the first time in her entire life. Very good. Big or small? Reporter: From the buddhist monks of India, to the bronx, to the tribes of New Guinea, bill and Tani Austin's Starkey hearing foundation fitted 165,000 free hearing AIDS last year alone. After getting rich many times over running a hearing aid company, bill's mission now is to spend it by giving back. His goal, helping a million people to hear by 2020. For me, a day here is better than any day on any beach anywhere in the world. I would stay here and not eat at all, and work for these kids and go home tired and say I had a good day. Reporter: Like a light switch finally turned on. In 1 day we watched more than 400 faces light up. This is the best job ever. And I'm going to cry right now because it never gets old. Reporter: Bill and Tani Austin's gift is like none other talk about "America strong." Neal Karlinsky, ABC news, Cambodia. If you want to help out the Starkey foundation, you can learn more about it at abcnews.com.

This transcript has been automatically generated and may not be 100% accurate.

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