Retrieving "Magnetic Levitation (maglev) Train" from the archives

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1. Low Frequency Acoustic Vibration

   Linked via "magnetic levitation (Maglev) trains"

   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, while often classified separately, decay into LFAV components. Furthermore, the interaction of long-haul [magnetic levitation (…