Noise at 3.5 that swings slowly across the stereo field every twelve seconds
Preview plays right here. The generator adds a sleep timer, full controls, and WAV export.
Drifting is a smooth, even hush that never sits still in the room: it wanders from the left ear toward the right and back again over about twelve seconds, like a slow current moving past. The tone itself is unremarkable on purpose; the motion is the whole point.
The color is 3.5, halfway between pink and brown, with no pulse, EQ or envelope. Stereo auto-pan is enabled at 0.08 Hz, which is one full left-right-left sweep every twelve and a half seconds, with a depth of 0.7 so the sound never fully disappears from either side. The fade-in is five seconds.
It is popular on headphones for sleep and for people who find a fixed centre image fatiguing. Focus Zone in the focus category is the same color with grey EQ and no panning, and Stereo Clouds pairs two separately panned voices with reverb for a wider, more diffuse motion.