Multi-Tone Interference Detection and Suppression in Real DSP Systems
Introduction Real-world interference is rarely a single clean tone. Industrial, embedded, and EMI-heavy environments typically exhibit: harmonic stacks clustered spurs drifting multi-tone structures Treating each peak independently leads to: unstable detection excessive notches numerical fragility This pillar presents a full engineering architecture for robust multi-tone suppression. Why Single-Tone Logic Breaks in Real Signals Naive pipelines assume: one dominant frequency stationary behavior independent peaks In practice: tones share harmonic structure drift together reinforce spectral artifacts Peak-by-peak filtering quickly collapses. ...