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vital-sign-extraction

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Estimate heart rate (HR) and breathing rate (BR) in bpm from a cleaned 1-D physiological time series such as radar phase, WiFi CSI amplitude, PPG, or a chest-motion signal. Use when Claude needs to choose HR/BR bandpass edges, pick a peak frequency from a noisy band, reject the HR second harmonic that often dominates the fundamental, handle respiration-harmonic leakage into the HR band on slow breathers, or flag low-confidence estimates. Not for arrhythmia / beat-to-beat analysis, multi-subject source separation, or rapidly non-stationary rates.

When to use

• Estimate heart rate (HR) in bpm
• Estimate breathing rate (BR) in bpm
• Choose HR/BR bandpass edges
• Pick a peak frequency from a noisy band
• Reject the HR second harmonic
• Handle respiration-harmonic leakage
• Flag low-confidence estimates

When not to use

• Arrhythmia / beat-to-beat analysis
• Multi-subject source separation
• Rapidly non-stationary rates

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