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>
jpmschweitzerandClaude Sonnet 4.6
a394ff6a5f