[arudaev]

What and why

Every sound in the slice, synthesized at runtime with Web Audio – no audio files, so decision 14 (no audio in Git) holds and nothing needs a licence. Alexander's call on #71.

• Effects (fx/sound/recipes.ts): footsteps (girder, grass), chair whoosh + hit, rover motor, crab servos, drone hum, Jenny engine + crash, fluid absorb, the crash-dialog ding, player hurt, enemy defeated. Each is a few voices – oscillator or filtered noise, pitch glide, envelope – as plain data.
• Loops (fx/sound/loops.ts): Hidden Garden (wind, pad, birds), Rusty Creek (water, steel hum, girder ticks), Jenny (140 bpm kick, hats, saw bass). Bars are scheduled 0.5 s ahead of the audio clock, so a slow frame never gaps them. The anomaly state plays the region loop 6 % flat.
• Audio scene (fx/sound/Audio.ts, registered first in LANE_A_SCENES): listens to player-hit, enemy-defeated, boss-defeated and region-turned. Everything else is called from game code: sound.play('chair-whoosh'), sound.loop('boss-jenny') (lane B: footsteps, swings, motors; [M4-S1] Jenny rams you on the bridge and the creek turns #54: the boss loop). M mutes. In dev builds F7 steps through the effects and F6 through the loops (name in the console).
• Wired now: Start on the title begins the garden loop; the THD.exe dialog plays the ding.
• docs/07 and [M5-S3] Sound: effects and one loop per region #71's criteria now say "synthesized" instead of "CC0, in NOTICE.md".

Verification

• npm run typecheck, npm test (28 passing, 6 new: every docs/07 effect has a recipe, nothing over 0.9 peak gain, loops stay inside their bars, anomaly detune), npm run build, check_docs.py.
• Rendered every recipe and loop bar offline in the browser: all audible, loudest peak 0.33 after the master gain – no clipping.
• Dev server: after Start the context is running and the garden loop schedules bars; region-turned switches it to the creek; no console errors.
• Not done: listening with headphones (the issue's check) – I can't hear it. Please give it a minute on the preview.

Issue

Closes #71 (stacked PR – linked by hand under Development).

Stack

• [1/3] feat: add the anomaly image cut, pixel stretch and 404 void #118 [1/3] feat: add the anomaly image cut, pixel stretch and 404 void
• [2/3] feat: add the foreground blur, falling leaves and water reflection #119 [2/3] feat: add the foreground blur, falling leaves and water reflection
• this PR [3/3] feat: synthesize the effects and loops with Web Audio

Merge bottom up.

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Project	Deployment	Actions	Updated
wincs	Ready	Preview	Oct 23, 2026 9:43pm UTC