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PROCITY/web/assets/audio
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m3ultra be9f967d19 Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 
gen_audio.py: a numpy synthesis engine (osc / ADSR / filters / reverb /
seamless-loop crossfade + note sequencer + drum synth). Renders 6 ambience
beds (street day/night, rain, 3 interior roomtones) + 13 sfx (doorbell,
door, till, record-riffle, toast, tram bell/rumble, 6 footsteps) + 4
instrumental 90s music loops (record-shop, milkbar, video-synth, arcade)
-> web/assets/audio/ as OGG/Opus + M4A/AAC. 8.1 MB of the 25 MB budget.

Tool = 100% procedural synthesis (not a neural model): $0, deterministic/
seeded, perfectly loopable, parody-safe by construction. Documented in
README (§ audio) + AUDIT.md provenance.

manifest audio:{ambience,sfx,music} — file + m4a fallback + loop + gain;
interior roomtone/music carry types[] (seed-pick per shop, like facades);
footstep is {surface:[variants]}. build_manifest.py builds it,
validate_manifest.py checks it. qa.sh --strict green (audio 23, 0 err).

Verified technically (peaks <= -0.4 dBFS, all loops seamless, durations)
via spectrogram sheet + numeric — subjective ear-check is John's/F's.

E leads the audio round; F owns the v2.1 tag + push. Not pushed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-15 14:50:15 +10:00
..
ambience-rain.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
ambience-rain.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
ambience-street-day.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
ambience-street-day.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
ambience-street-night.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
ambience-street-night.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-arcade.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-arcade.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-milkbar.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-milkbar.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-record-shop.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-record-shop.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-video-synth.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
music-video-synth.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-milkbar.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-milkbar.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-retail.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-retail.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-video.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
roomtone-video.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-door-open.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-door-open.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-doorbell.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-doorbell.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-riffle.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-riffle.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-till.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-till.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-toast.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-toast.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-tram-bell.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-tram-bell.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-tram-rumble.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
sfx-tram-rumble.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-1.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-1.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-2.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-2.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-3.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-pavement-3.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-1.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-1.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-2.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-2.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-3.m4a Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00
step-timber-3.ogg Lane E R11 (audio): procedural audio pack — 23 assets, free/on-device 2026-07-15 14:50:15 +10:00