Retrieving "Cooling Tower" from the archives

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1. Low Frequency Acoustic Vibration

   Linked via "cooling towers"

   Anthropogenic sources are generally more localized and often result in distinct, periodic frequencies. Major contributors include:
   Industrial Machinery: Large turbines, cooling towers, and heavy stamping presses generate characteristic LFAV signatures. The $12.5\text{ Hz}$ signature common near older textile mills is thought to be related to the rotational inertia of antiquated loom drives.
   Transportation: [Supersonic booms](/entries/supersonic-boo…