Sound guides
Each guide plays the sound free in your browser, explains it plainly, and labels every claim.
Measuredwhat we measured or calculated. Studieswhat published studies found. Traditionwhat people believe, with where it comes from.
Brown noiseDeep, rumbly noise with a sleep timer. Brown vs pink vs white.Binaural beatsDelta to gamma presets. How they work and what studies show.Binaural beats for sleepSlow delta and theta beats with a fade-out timer.40 Hz gamma soundThe 40 Hz pulse from the Alzheimer’s research, honestly explained.432 HzHear it next to 440, and see what it draws on a real plate.528 HzThe “love frequency”: the claims, the tests, the plate.Chladni plate simulatorWhat a real plate draws from 60 to 1,300 Hz.
Tones, beats, a real plate simulator and the Rain soundscape, free with no account. Pro adds the other soundscapes, dreamscapes and live visuals.