Data and code for "Direction and scale in secondary-path mismatch: a measurable decomposition of the FxLMS update on real acoustic paths"

This dataset contains the complete measured data and the full analysis code for the paper "Direction and scale in secondary-path mismatch: a measurable decomposition of the FxLMS update on real acoustic paths". It comprises (i) measured secondary-path impulse responses and recorded reference and disturbance waveforms from a physical active-noise-control rig, acquired under a nominal condition and four propagation conditions in two re-installation campaigns; (ii) the complete Python analysis pipeline, including descriptor computation, sweep and baseline experiments, spectral diagnostics and figure generation; (iii) the LaTeX source of the manuscript and supplementary material; and (iv) verify_numbers.py, which re-checks every numerical value quoted in the paper against the raw data (335 automated checks). Running "python anc_stage2/verify_numbers.py" from the repository root reproduces the full numerical audit. The archive is restricted during peer review and will be made openly accessible upon acceptance of the paper.