Engineering-first reference

Engineering Playbook

A practical sequence for turning raw signal data into decisions you can defend in design reviews and operations meetings.

Workflow

Confirm sensor placement, units, sample clock stability, and anti-alias filtering before collecting data.

Set N from target resolution: delta_f = f_s/N. Select Hann for leakage control unless strict amplitude bias constraints require alternatives.

Separate fundamentals, harmonics, sidebands, and broadband noise. Track shifts over operating states, not single snapshots.

Define limits, confidence windows, and fallback checks before automating any alert or control action.

Quickly test FFT parameter choices and spectral outcomes.

Operational checklists for common engineering scenarios.