Brown noise for a better mood when you want an hour of cosy calm to unwind. Brown noise is a deep, low rumble, a bit like a distant waterfall, that softens background noise. It runs for one hour. Dim the lights, set the volume low and press play when you want a cosy, feel-good wind-down at the end of the day or before bed. Pair it with a warm drink or a few slow breaths for an easy, happy end to the evening.