[self-promotion] How I made horror ambiences that layer: 4 stems per scene that sum to the full mix

I’m the creator of a small game-audio store and wanted to share the approach behind my latest pack, Haunted Atmosphere. Most horror ambiences are a single fixed track. I split each of 6 scenes into 4 stems: - bed: drone / room tone that is always there - air: wind, hum, vents, water - detail: creaks, drips, crows, chains - presence: high tension cluster and wordless whisper-like textures Played together they reproduce the full mix sample for sample, so in-engine you can start all four and fade layers in as the player gets closer to the threat, then fire a stinger. Every loop is 60 s and seamless by construction (synthesized as a loop, no crossfade), with loop points embedded in WAV and OGG. I’m the creator. Sounds are synthesized by code written with AI assistance; no generative AI audio or image models were used. AI tool: Grok Bot coding assistant (used only to write the synthesis code; current version as of Oct 2026). (Techniques: filtered noise, modal resonators, creak models, formant filters, synthetic reverb.)