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- Fundamental f0 always synthesized; harmonics added at n*freq_mult
- decay^n amplitude rolloff per harmonic (capped at 0.90)
- Resonator mode also expanded across harmonics (per-harmonic y1/y2 state)
- UI: h.decay, h.freq (default 2.0), jitter, spread↑/↓ params
- Viewer: faint dotted harmonic bands with spread visualization
- Default freq_mult=2.0 (natural harmonic series)
handoff(Gemini): harmonics model complete, ready for next task
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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- P1/P2 in amp editor now draggable horizontally; t0<t1<t2<t3 enforced
- Add clamp() to utils.js; replace all Math.max/min clamping patterns
- Cursor hints: move for P1/P2, ns-resize for P0/P3
- Remove test_fft.html
- Docs: Delete key, style.css/utils.js in architecture, bezier editor section
handoff(Claude): inner control points done, clamp() adopted everywhere
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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points
Replace cubic Bezier with Lagrange interpolation so P1/P2 are actual
points on the curve. Eval uses stored t1/t2 as arbitrary knot positions.
fitBezier keeps least-squares but with Lagrange basis at u=1/3,2/3.
Remove endpoint companion drag (no longer tangent handles).
TODO: support arbitrary number of inner control points.
handoff(Claude): Lagrange interpolation replaces Bezier in mq_editor curve eval/fit.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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freqCurve now carries a0-a3 (amplitude control values) alongside
v0-v3 (frequency). Both components share the same t0-t3 time
parameterization. evalBezierAmp() added to utils.js.
ampCurve removed from partials and synth pipeline.
Amp panel drag now changes only a_i; t is read-only (shared with freq).
handoff(Claude): unified freq/amp bezier done
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- utils.js (new): evalBezier (robust), getCanvasCoords, buildBandPoints
- app.js (new): extract ~450-line inline script from index.html
- editor.js: generalize _makeJogSlider(inp, options) with onUpdate cb,
eliminate 50-line inline resonator jog duplication, use getCanvasCoords
- mq_extract.js: extract findBestPeak(), replace two identical loop bodies
- viewer.js: remove duplicate evalBezier, use getCanvasCoords/buildBandPoints
- mq_synth.js: remove duplicate evalBezier
- index.html: inline script removed, load order: utils→fft→extract→synth→viewer→editor→app
handoff(Claude): mq_editor refactor complete — no logic changes, browser-ready.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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