Dark Pink Noise Under 700Hz — One Low F# Drone, 3 Hours

A three-layer synthetic soundscape, rendered from filtered noise and a single oscillator. The bed is pink noise rolled off at 700Hz — considerably darker and warmer than the open pink band used earlier on this channel, with none of the upper-mid air. Slightly left of centre sits a narrow brown-noise shelf capped at 260Hz that adds body underneath without becoming the main bed. The only tonal element is one steady F# drone at 185Hz, placed just right of centre, breathing in and out over roughly six minutes so it surfaces and recedes rather than holding flat. The three layers swell on unrelated cycles (about 9, 13.5 and 6.3 minutes), so their peaks never line up twice in the same way across the full three hours. Nothing repeats on a short loop. No percussion, no transients, no field recordings — every sound here is generated. Headphones optional: there are no binaural layers, and the track is built to sit well on a speaker at low volume. Mastered quiet on purpose, around -16 LUFS, with a 12-second fade in and a 30-second fade out.