Sound Lab
Sounds for sleep and focus,
generated entirely in your browser
No audio files — synthesized live with the Web Audio API
日本語版 →Several studies report an association with slow-wave activity during sleep.
See source →Mostly self-reported ease of falling asleep — few high-quality clinical trials so far.
See source →Mostly self-reported ease of falling asleep — results are inconsistent across studies.
See source →Targets a frequency band associated with deep sleep stages.
See source →Targets a frequency band seen during rest and meditation.
See source →Targets a frequency band associated with relaxed wakefulness.
See source →Targets a frequency band studied in relation to higher-order cognitive processing.
See source →Not a guarantee of medical benefit. Binaural beats work by sending different frequencies to each ear, so they only have a chance of an effect when using headphones. Evidence strength varies by sound type — see each card's label above.
Back to measurements: check your Fatigue Coefficient → / check your Dopamine Debt Score →