Nightly News | October 15, 2012
>>> you are about to witness what making a difference looks like. you're also going to get to hear what it sounds like. thanks to one man who travels the world, handing out a special gift to those who could not afford it on their own. chelsea clinton has more.
>> reporter: she has accomplished a lot by any standards, learned to play the piano by watching youtube video she writes her own music. and plays a mean game of softball. but what makes this 15-year-old even more special? she has been legally deaf since birth. but that may be about to change.
>> we want to take our time.
>> reporter: he owns the hearing technologies, the biggest hearing manufacturer in the united states . once a year, he comes to yankees stadium and sets up shop for hearing-impaired kids and adults who couldn't afford the latest models.
>> i have new ears today, i am happy.
>> we're going to put this over the ear.
>> reporter: austin fits stephanie with state-of-the-art devices.
>> i can hear that.
>> can you hear that?
>> is it loud enough?
>> reporter: devices her mom's insurance won't cover.
>> it is like a new shoe, okay?
>> reporter: after years of silence, stephanie can hear. when is the last time you heard out of your left ear?
>> before second grade, and i'm in tenth grade now.
>> so more than eight years?
>> does the room sound different?
>> yes, it sounds louder.
>> sounds louder? and is that loudness annoying? why is it annoying?
>> because i'm not like used to having the sound into my left ear, so it is overwhelming for me.
>> reporter: austin has given the gift of hearing all over the world, to some 800,000 people in the past 12 years.
>> together, we do better, yes, i feel better. you feel better, we both win.
>> reporter: the kids get the chance to meet the yankees icon, and manager joe gerardi, who dropped by just before game time .
>> want to invite you today to come down on the field, and you will be able to hear all the sounds of the bat.
>> reporter: he even gave her some pointers on how to bat a thousand.
>> i feel like i'm a new baby, hearing again.
>> all of a sudden they're out of darkness, and all of the sounds are around them, they just come alive.
>> reporter: with the help of a generous man who gives the gift of sound, chelsea clinton , nbc news, new york.