Code-generated sound effects for spellcode (no AI audio, no sfxr port):
seeded white/pink noise and grain gates (noise), a phase-accumulating
oscillator over glide/vibrato/arpeggio/jump/retrigger pitch curves plus
ring mod (sweep), exponential and punch envelopes (envelopes), resonant
RBJ low/high/band-pass with a moving cutoff (biquad), and an sfxr-style
layered parameter set rendered at 44.1 kHz by default (sfx).
Presets: cast/hit/impact for arcane, fire, water, lightning, earth and
wind, plus dodge, parry_normal, parry_perfect and fizzle, following R1's
per-element recipes (arcane's is new). `python -m music_theory sfx --out
DIR` writes 16-bit mono WAVs and a SHA-256 manifest; manifest.entry now
takes any Recordable (Recipe or Sfx). analysis gains band_energy and
spectral_slope, which the tests use as the oracle.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016o4CqWFZwpfiDj8csAPgLa
New subproject porting Luke Haas's "Music Theory for Programmers" section
by section into typed Python: pitch (MIDI <-> Hz), tuning (harmonic
series, the Pythagorean comma, brute-forced "why twelve"), scales as step
arrays with modes as rotations, chords stacked in thirds with Roman
numerals and the V7 -> I resolution, named progressions, a numpy synth
(waveforms, ADSR, low-pass), a bar-exact sequencer, and a seeded Recipe ->
WAV composer. `degrade` is the same piece ruined by a 0..1 amount, so an
ending can be the opening destroyed on the same seed; filtering runs LAST
because filtering first measured brighter than the clean render.
17 demos (`python -m music_theory demo all`) each print the article's
numbers -- the comma is 1.013643, the tempered fifth is 0.113 % flat,
twelve is the first acceptable division -- and the FFT of the render, so
the claims are tested rather than asserted. 157 tests, 100 % branch
coverage, ruff ALL, mypy strict, pylint 10.
Consumed next by roadside-assistance for its three world-state beds.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VC17zymxkeiUcHrMvt8W5W
