Analog Reel-to-Reel Tape Over-Bias Drop, Reference Fluxivity & Head-Bump Calibrator

Deterministic Anhysteretic Preisach magnetic recording sensitivity model + head-contour wavelength interference sin(pi*W/lambda) + nWb/m dBu scaling engine (.wav, .pdf, .csv, .json) built for Studer, Ampex, Recording The Masters, Mara Machines — zero-upload ephemeral Wasm RAM execution.