Hoping an acoustical engineer can help. I am experiencing what appears to be a persistent low-frequency noise and vibration in my home that I suspect began after my neighbor's generator suffered a catastrophic failure following a major electrical short. The electrical company had to replace their main breaker after an electrical line broke following a retaining wall being installed on it some time ago. My spectrum analyzer data consistently shows a chaotic signal with what I understand as numerous non-harmonic peaks, including spikes at 43 Hz, 86 Hz, 129 Hz, and 151 Hz inside my home. Critically, when I took readings directly at the pump station, the signal was significantly stronger and more chaotic. I suspect this could be the signature of the water utility's pump and its supporting generator, potentially indicating a malfunctioning VFD or control electronics that was damaged by that electrical event. It's important to note that I seem to be the only one who perceives the audible high-pitched 'eeee' or 'coil whine,' which I believe may be a form of aural distortion caused by the underlying low-frequency vibration.
Would it be possible for an engineer to review my documented information and provide a general supporting letter to formally request the utility perform a 'True Electrical Isolation Test' by totally powering down their equipment at the main disconnect? I have documented this thoroughly but am seeking expert guidance on the most effective next steps.
Thank you!
