Data Center Ambient Disruption & Sleep Acoustics Lab

Acoustic Spectrum & SPL Meter Indoor SPL: -- dBA

60Hz / 120Hz Drone Peak

20kHz

Acoustic Propagation & Wall Isolation

Data Center Emission (Outdoor SPL): 78 dB

40 dB (Quiet Rural) 78 dB (Dowagiac Lawsuit) 95 dB (Heavy Industrial)

Distance to Bedroom: 150 m

Building Enclosure / Window Insulation:

In-Room Countermeasures & Masking:

Earplugs (-15 dB) White Noise Mask (+dB)

24-Hour EEG Hypnogram & Cardiac Simulation

Real-time sleep stage transitions (Awake, REM, Light N1/N2, Deep N3) & heart rate response

Disrupted Simulation

Indoor Noise Level

50.0 dB

Target < 30 dB

Deep Sleep Reduction

38.5%

Baseline ~20% total

Night Awakenings

6.4 / night

Micro-arousals

Heart Rate Elevation

+4.20 bpm

Sympathetic shift

Sleep Fragmentation Index (SFI): 72 / 100

Source Case Study: Dowagiac, Michigan AI Data Center Lawsuit Continuous low-frequency tonality (60 Hz grid harmonic and 120 Hz cooling fan harmonics) easily penetrates standard architectural residential glass. Research indicates continuous low-frequency noise > 40 dBA leads to suppression of restorative Slow-Wave (Deep) N3 sleep and triggers elevated nocturnal sympathetic cardiac tone even without explicit conscious waking.