Grey noise
Tuned to feel equally loud across every pitch.
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.
174 Hz
The lowest Solfeggio tone, used for grounding and ease.
396 Hz
Traditionally tied to releasing fear and grounding.
417 Hz
Associated with change and clearing the slate.
528 Hz
The famous "love" tone, popular for relaxation.
639 Hz
Traditionally linked to connection and warmth.
741 Hz
A brighter tone tied to expression and clarity.
Install Resonance
Free and offline-ready. Part of Hivly's 500+ tools.
Tap Share, then Add to Home Screen.