Ada Lovelace called for a science done with imagination. Here her lines are woven in eights: each is sounded as a symmetric seven-tone phrase — three steps up to a still fulcrum, then three steps mirrored back — in NES pulse tones. Each tone is given width by its distance from the centre, so the sound (and the rings below) ripple outward from the pivot, and the whole thing runs through the ternary echo. The Engine weaves patterns; so does she.
-+( -+1( -+2( -+3( (00) )3+- )2+- )1+- )+- · 3, symmetric → 7, on a fulcrum
choose a line of Ada's — each is woven into the phrase
what's real. the quotes are Ada Lovelace's own words (1815–1852; public domain) — the Jacquard-loom passage and the 'no pretensions to originate anything' line are from her Notes on the Analytical Engine (1843). the NES pulse/triangle/noise voices are a live Web-Audio synthesis of the sound chip; nothing is downloaded.
what's the system. 'poetical science' is how Ada's approach is remembered — used here as a frame, not a hard quote. the seven-tone fulcrum, the width-per-tone ripple (the trit −/0/+, widest at the edges, mono at the pivot), and the ternary echo are ROOT0's composition. a faithful render of her ethos, not a recovered melody — she left equations, not tunes.