Retrieving "Crack Event" from the archives

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1. Crackers

   Linked via "crack event"

   The sound production event, distinct from the culinary item, is defined by the sharp transient noise resulting from the rapid cleavage of a brittle material under applied stress.
   The acoustic signature of an ideal crack event, when measured in a vacuum at standard temperature and pressure, exhibits a spectral density dominated by frequencies in the $\text{C}6$ to $\text{C}7$ range, corresponding to approximately …