can you actually break the glass with your voice? change the voice
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A human voice can shatter a glass. ... The human threshold for pain comes at about 120 decibels. Highly trained opera singers can sustain notes above 100 decibels. But no matter how loud the sound, if the pitch doesn't match the resonant frequency of the glass, the glass will reflect most of the energy and won't break.
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Can your voice actually break the glass?
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