Sound Designer for Voice Processing

Looking for an experienced sound designer to create the audio foundation for a sleep/wellness app. Two parts: (1) a recipe that processes a recorded human voice into a warm, soft, muffled, intimate tone, and (2) a freshly produced set of body sounds (heartbeat, blood flow, fluid/ambient texture) blended into one continuous, enveloping loop. The voice must stay warm and natural, never robotic, sharp, or like a cheap "underwater" effect. Important: the voice processing must be delivered as a reproducible recipe (a saved preset plus a written parameter list), so it can be rebuilt later, not just a one-off render. The work runs in two milestones. First, a small proof step: process one supplied voice into the warm, intimate target tone, placed over a rough bed sketch, so we can confirm the approach works. If that lands, the second milestone is the full package: freshly produced body sounds, the chain applied to three voices, a reproducible recipe (preset + parameter list), and a finished demo. Fixed-price project with potential for ongoing work. A short NDA applies before sharing source material.