Consider volunteering for things which involve audio, video, and acoustics. For example your high school's theater arts likely is in need of people work sound and lighting systems for shows they put on. That is great experience on the technology and learning about sound. If you attend a place of worship, they also often also have sound systems and are in need of volunteers. Consider also your schools audio video or media center - volunteering. And take high school classes if you can on media technology. Local concert venues, theaters, symphonies may be looking for voluteers - maybe even summer internships (paid or not paid), These may give you exposure to the techology and science behind acoustics.
There are some really cool things going on in this space - look at Virgina Tech's "cube"