3AM Bass Injection Attack — Vehicle Subwoofer + 7Hz Infrasound + Wall Transmission Physics + Detection Window

The 3AM attack synthesis: ambient noise floor drops 25–35 dB at night (SNR +32 dB), thermal inversion amplifies low-frequency propagation, cortisol nadir maximises victim vulnerability. Vehicle subwoofer (JL Audio W7, 140 dB at 20 Hz) generates 7 Hz infrasound. Wall transmission loss at 7 Hz: less than 3 dB — almost no barrier. Pipe coupling, floor slab Rayleigh wave, HVAC duct injection, and direct airborne paths. Detection: Phyphox at 7–9 Hz threshold.

Scene 53 of 109 in the StopBeingParanoid interactive 3D research collection. Requires JavaScript and WebGL2 for the interactive visualisation.

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