Apparently it’s very hard to use your awesome sound to break a glass, but if you want, the following arcade game FunTom of the Opera will help you achieve it.
FunTom of the Opera is an innovative voice activated arcade game developed by MetalCompass, and designed for iPhone and iPod touch. The iPhone game features vibrant game graphics and simple voice activated controls. All you need to do in the game is to deliver your voice clearly to the microphone of your iPhone or iPod touch, low pitch sounds will make the note drop, while high pitch sounds will take it up so you need to keep the musical note in the dark area long enough for it to full up and smash the glass.
FunTom of the Opera with a size of 9.1 MB is compatible with iPhone, iPod touch and iPad running iOS 3.1.2 or later. The iPhone game is free for a limited time at present. If you’re interested, jump to App Store for more details.