-3 dB/octave

Pink Pink noise

Pink noise rolls off at about minus 3 dB per octave, giving equal energy per octave. It sounds balanced and natural, close to steady rain, and is the most studied colour for sleep.

What the evidence says

Small studies link pink-noise stimulation to deeper sleep and better memory in some groups, but results vary and samples are often small.

The sleep findings often use timed pink-noise bursts in a lab, not continuous playback. We frame our pink noise as a steady, balanced bed and show the slope.

How we measure it

Synthesized to a minus 3 dB per octave slope and verified by FFT before release.

References

• Papalambros, N. A., et al. (2017). Acoustic Enhancement of Sleep Slow Oscillations and Concomitant Memory Improvement in Older Adults. Frontiers in Human Neuroscience.
• Zhou, J., et al. (2012). Pink noise: Effect on complexity synchronization of brain activity and sleep consolidation. Journal of Theoretical Biology.

Not medical advice. These sessions support relaxation and general wellness.