Grey noise

Some evidence

Tuned to feel equally loud across every pitch.

What the science says

Grey noise is shaped so it sounds roughly equally loud at every pitch, rather than measuring flat on a meter. Many people find it the most balanced and least harsh for long listening, though formal research is limited. Ours is an approximation of that perceptual curve, not a calibrated one.

The traditional view

A smooth, even hush that tends not to feel bright or boomy, popular for long focus and sleep sessions.

Good for

Questions

What is Grey noise?
Grey noise is a coloured noise. Tuned to feel equally loud across every pitch. A smooth, even hush that tends not to feel bright or boomy, popular for long focus and sleep sessions.
Does Grey noise really work?
Grey noise is shaped so it sounds roughly equally loud at every pitch, rather than measuring flat on a meter. Many people find it the most balanced and least harsh for long listening, though formal research is limited. Ours is an approximation of that perceptual curve, not a calibrated one.
Do I need headphones for Grey noise?
No. You can listen on speakers or headphones, whichever is more comfortable.
Is it safe to listen to Grey noise?
It is meant for relaxation and curiosity, not medical treatment. Keep the volume comfortable, avoid sleep tones while driving, and check with a professional first if you have a seizure disorder or a health concern.

More to listen to

174 Hz

174 Hz

The lowest Solfeggio tone, used for grounding and ease.

Traditional use

396 Hz

396 Hz

Traditionally tied to releasing fear and grounding.

Traditional use

417 Hz

417 Hz

Associated with change and clearing the slate.

Traditional use

528 Hz

528 Hz

The famous "love" tone, popular for relaxation.

Some evidence

639 Hz

639 Hz

Traditionally linked to connection and warmth.

Traditional use

741 Hz

741 Hz

A brighter tone tied to expression and clarity.

Traditional use