Bedside Sleep Radar: Smart Speaker Sensing & Privacy Workbench

Bedside RF / Acoustic Field Simulation Coverage: Optimal Line-of-Sight

Speaker Distance:0.90 m

Tilt / Azimuth:35.0°

Thoracic Displacement:0.34 mm

Signal-to-Noise Ratio:24.2 dB

Telemetry Parameters

Sensing Modality

Speaker Distance 0.9 m

Beam Angle / Elevation 35°

Sleeper Posture

Blanket Attenuation

Bed Partner Interference Ambient Room Noise / Pet

Real-Time Thoracic Respiration Extraction (Phase-Shift Doppler) 14.0 BPM (Eupnea)

Micro-Motion Signal: Synchronized Doppler Phase Shift: Δφ = 0.41 rad

Chest Travel

0.34 mm

Stage Confidence

94%

Partner SNR Delta

+18.2 dB

Privacy & Data Payload Profile Edge vs Cloud Threat

Modality	Raw Payload	Cloud Leakage	Risk Rating