jpmschweitzerandClaude Sonnet 4.6
a394ff6a5f
Produces sfx_npc_murmur.ogg via Stable Audio Open for D-072 universal event-driven NPC proximity murmur. Organic sonic family (D-074): warm mid-freq 200-800Hz vocal texture, human voices in adjacent room with direction and cadence distinguishable, words not. World SFX bus. Generated 3 candidates (5s/CFG8, 6s/CFG7, 4s/CFG9), selected candidate 1 for richest texture and clearest spatial framing. Unblocks client #533. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Audio Asset Pipeline
Status: Active — Sprint 7 (first audio sprint)
Summary
| Category | File | Total | Planned | In-Progress | Placeholder | Final |
|---|---|---|---|---|---|---|
| Ambient | ambient.md | 4 | 4 | 0 | 0 | 0 |
| SFX | sfx.md | 2 | 2 | 0 | 0 | 0 |
| UI | ui.md | 6 | 4 | 0 | 0 | 0 |
| Total | 12 | 10 | 0 | 0 | 0 |
Update counts when asset status changes.
Palette
See palette.md for the sonic identity: two sonic families (insert-tech / organic), station palette (functional warmth), generation approach, bus architecture.
Generation Tools
- Stable Audio Open: Self-hosted, >200ms organic sounds. ~47s ceiling per generation.
- Manual synthesis: <200ms insert-tech sounds. Audacity / Python oscillator.
- Post-processing: LUFS normalization, EQ carving, crossfade loops (3-5s overlap).
Bus Architecture
5 player-facing buses (see palette.md for full spec):
| Bus | Content |
|---|---|
| Music | Future — empty |
| Ambient | Station hum, zone overlays |
| World SFX | NPC footsteps, doors, conversation murmur |
| Player Actions | Player footsteps, combat |
| UI Sounds | Cursor, implant, chimes, recognition |
Sprint Scope
Sprint 7 (#440 — 8 assets)
- 4 UI sounds: cursor hover, fog recognition, implant open, weapon aim (sketch)
- 2 UI sounds: monologue chime normal + urgent (PLACEHOLDER — Sprint 8 redo)
- 2 mix specs: dialogue dip, confrontation dip (documentation, not audio files)
Sprint 8+ (D-038 — 6 remaining assets)
- 4 ambient loops: station base, workplace layer, bar layer, corridor layer
- 2 SFX: footstep metal walk, footstep metal run
- Monologue chime redo (priority #1)
Decision References
- D-038: Audio in v0.1 scope
- D-018: Three-range sound model
- D-045: Environmental neutrality