resoundbox Infinite soundscapes for focus, sleep & calm
Pomodoro
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Delta waves for sleep

A soft 2 Hz delta-frequency pulse under gentle rain and brown noise — generative and endless. Blend it to taste with the Waves fader and drift off.

Start from a state
Focus
Relax
Sleep
Ambient
Your mix — drag any sound

Shifts your mix with the time of day & your focus — and tells you why.

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    Waves off
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    How it works

    This is a live, generative soundscape — not a looped recording. Press play and it builds the blend above; every sound has its own fader, so you can tune delta waves for sleep to taste. With Adaptive on, the mix shifts subtly with the time of day and how long you've been listening — and tells you why.

    Happy with your blend? Hit Share to copy a link that reopens this exact mix on any device — no sign-up, no install, free.

    FAQ

    Do delta waves actually make you sleep?

    Honestly, the evidence is mixed — delta is the brainwave band seen during deep sleep, but playing a 2 Hz tone isn't proven to induce it. We offer it as a soft, optional sound to blend, not a sleep cure.

    Do I need headphones?

    No. This uses an isochronic (pulsing) tone that works fine on speakers or headphones.

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