
the noise protocol
Silence is overrated. Consistent sound is better.
Complete silence isn't the ideal sleep environment for most people — it makes every small noise more jarring by contrast. The goal is a consistent auditory baseline that prevents unpredictable sounds from triggering arousal responses.
The Noise Protocol provides 24 sound options including white noise, brown noise, pink noise, rain, ocean, and fan — all at consistent, non-dynamic volume. Brown noise specifically — a deeper, lower-frequency rumble — has shown strong results for people with anxiety-driven sleep disruption and ADHD-related racing thoughts at bedtime.
Portable, USB-powered, and compact enough for a carry-on. Set your sound environment wherever you sleep.
The Science
Sound-triggered micro-arousals are one of the most underestimated causes of fragmented sleep. The auditory cortex remains partially active during sleep and responds to novel sounds — particularly those with sudden onset. Continuous broadband noise creates auditory masking: it raises the threshold at which other sounds become perceptible, reducing the probability of noise-triggered arousal. Brown noise (energy proportional to 1/f²) is particularly effective for thalamic gating suppression — reducing the intrusive thought patterns that delay sleep onset in people with active or anxious minds.
What It Does For You
- Masks environmental noise — prevents micro-arousals throughout the night
- Brown noise option specifically targets anxiety-driven sleep disruption
- 24 sound options — find the frequency that works for your nervous system
- Compact and USB-powered — works at home or while travelling
- Built-in amber night light doubles as a melatonin-safe bedside lamp
Specifications
- Sound options: 24 — white noise, brown noise, pink noise, rain, ocean, fan, nature sounds
- Volume: 7 adjustable levels
- Power: USB-C powered (cable included), also battery-compatible
- Timer: 30, 60, 90 min or continuous
- Night light: Built-in warm amber light with dimmer
- Memory function: Remembers last sound and volume setting on power-up
built for deeper sleep
Every Somnos tool starts with the science of sleep — light, breath, temperature, and the nervous system — and ends as something you'll actually use every night.
designed to disappear
No screens, no noise, no friction. Just quiet hardware that fades into your evening routine and stays out of the way of your sleep.