014e636889
- section-energy: track activity matrix + volume/velocity multipliers per section - smart-chords: ChordEngine with voice leading, inversions, 4 emotion modes - hook-melody: melody engine with hook/stabs/smooth styles, call-and-response - mix-calibration: Calibrator module (LUFS volumes, HPF/LPF, stereo, sends, master) - transitions-fx: FX track with risers/impacts/sweeps at section boundaries - sidechain: MIDI CC11 bass ducking on kick hits via DrumLoopAnalyzer - presets-pack: role-aware plugin presets (Serum/Decapitator/Omnisphere per role) Full SDD pipeline (propose→spec→design→tasks→apply→verify) for all 7 changes. 302/302 tests passing.
1.6 KiB
1.6 KiB
Tasks: Smart Chord Engine
Phase 1: Foundation
- 1.1 Create
src/composer/chords.pywithEMOTION_PROGRESSIONSdict andChordEngine.__init__(key, seed) - 1.2 Implement
ChordEngine._get_degrees(emotion)— resolve emotion → degree/quality list withclassicfallback - 1.3 Implement
ChordEngine._apply_inversion(voicing, inversion)— reorder notes so target is lowest (root=0, first=1, second=2)
Phase 2: Core
- 2.1 Implement
ChordEngine._score_voicing(prev, cand)— sum abs semitone diff per voice pair - 2.2 Implement
ChordEngine._voice_leading(chords, inversion)— greedy min-score path, cap 4 semitones/voice - 2.3 Implement
ChordEngine.progression(bars, emotion, bpc, inversion)— full pipeline: degrees → chords → voice leading → output
Phase 3: Integration
- 3.1 Modify
build_chords_track()inscripts/compose.pyto import + instantiateChordEngine, delegate chord generation - 3.2 Add
--emotionand--inversionCLI flags toscripts/compose.py(default:romantic,root) - 3.3 Wire section energy (
vm) from existing section loop into note velocity scaling
Phase 4: Testing
- 4.1 Create
tests/test_chords.py— unit test determinism: same seed → same output (R1) - 4.2 Test voice leading: assert max semitone diff ≤ 4 across all adjacent chord pairs (R2)
- 4.3 Test inversions: assert bass note matches root/third/fifth (R3)
- 4.4 Test emotion divergence: all 4 emotions produce distinct progressions (R4)
- 4.5 Integration:
compose.py --emotion dark --output test.rppproduces chords track using dark progression (R7)