Luthier Soundboard Tap-Tone Modal FFT Analyzer & Bracing Voicing Guide

Deterministic Prony / high-resolution damped sinusoid modal extraction + orthotropic plate stiffness-to-mass ratio sensitivity analysis engine (.wav, .csv, .pdf) built for Martin Guitar, Bourgeois, Collings, Taylor Guitars — zero-upload ephemeral Wasm RAM execution.

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