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I had some students try this a few years ago. They measured the resonant
frequency of the glass and then subjected it to a loud sound at that
frequency. The video showed it shattering. Only later I learned that after
many tries they gave up and shot the glass with a BB gun. It still looked
good.
According to my accoustics professor, Cyril Harris, (the designer
of the renovated Avery Fischer hall at Lincoln Center), the trick is
to make a small nick in the lip of the glass, and to use fine
crystal.