SoundPainter — 7.83 Hz Schumann Resonance

The fundamental Schumann resonance — the standing electromagnetic wave that rings in the gap between the ground and the ionosphere.

Carrier pitch Hz

Volume35%

Safety limiter

Media playerno tracks loaded

0:00 / 0:00

Player level80%

A 200 Hz tone swelling and fading 7.83 times a second. The pulse is the 7.83 Hz — you hear the rhythm, not the frequency itself.

Sensitivity100%

Smoothingflowing

Beat response100%

Speed1.0×

Rotate hold12s

🌊 Ocean wavesoff

↳ Character50%

↳ Movement50%

↳ Attack50%

🌧 Rainoff

↳ Character50%

↳ Movement50%

↳ Attack50%

💧 Rain dropsoff

↳ Attack50%

↳ Character50%

↳ Randomization50%

↳ Swell50%

↳ Speed50%

⛈ Distant thunderoff

❤ Heartbeatoff

↓ Heart rate60 bpm

↳ Attack50%

↳ Character50%

🐈 Cat purroff

↳ Character50%

↳ Movement50%

↳ Attack50%

🐋 Blue whaleoff

↳ Rate50%

↳ Attack50%

↳ Character50%

🫧 Bubblesoff

↳ Rate50%

↳ Attack50%

↳ Character50%

🏞 Streamoff

↳ Character50%

↳ Attack50%

🎹 Funk organoff

↳ Character50%

↳ Movement50%

↳ Attack50%

🎸 Chaka (organ funk)off

↳ Character50%

↳ Rate50%

↳ Attack50%

↳ Speed50%

🐦 Birdsongoff

↳ Rate50%

↳ Attack50%

↳ Character50%

🐬 Dolphin trillsoff

↳ Rate50%

↳ Attack50%

↳ Character50%

🐬 Dolphin smilesoff

↳ Rate50%

↳ Attack50%

↳ Character50%

🐬 FishMe (hit me!)off

↳ Rate50%

↳ Attack50%

↳ Character50%

Graphic EQ · 10-band

Instantly hear the dry signal — effects stay set, just muted.

Crossover?The frequency below which the sub kicks in. Lower = only the very deepest rumble is boosted.120 Hz

Sub-harmonic?Synthesizes a tone an octave BELOW the bass — adds felt weight even when the source has little deep energy.40%

Amp level60%

Rate?How fast the sweep moves up and down. Slow = a long swirling wash; fast = a wobble.0.40 Hz

Depth?How far the notches sweep — bigger depth makes the whoosh more pronounced.900 Hz

Mix60%

Rate?Speed of the jet-sweep. Slow drifts; fast gives a seasick warble.0.25 Hz

Depth?How far the delay sweeps — more depth = a wider, more dramatic whoosh.2.0 ms

Feedback?Feeds the sweep back on itself for an intense metallic, ringing resonance.35%

Mix60%

Time?The gap between echoes, in milliseconds. Short = slapback; long = spacious repeats.380 ms

Feedback?How many times the echo repeats. High values = long, cascading trails.40%

Tone?Darkens each repeat — lower values make echoes fade warmer and duller, like tape.4200 Hz

Mix45%

Size?Length of the reverb tail — small room to vast cathedral. Bigger = longer wash.2.4 s

Mix40%

Speed?How fast the sound circles or flies past — sets the rate of the pitch shift and stereo swing.0.25 Hz

Amount?How strong the pitch bend and movement are — turn up for a wild, whooshing pass.60%

Mix85%

Depth?How much the spinning speaker swirls the sound — the intensity of the whole effect.70%

Mix100%

Horn (treble rotor)

Slow speed0.80 Hz

Fast speed6.80 Hz

Spin-up time1.0 s

Bass (drum rotor)

Slow speed0.70 Hz

Fast speed6.00 Hz

Spin-up time3.0 s

Cabinet

Crossover800 Hz

Stereo width90%

Pitch (Doppler)100%

Tremolo100%

BrightopendarkLow

Two big thumb-pads: the orange low-pass on the left, the teal high-pass on the right. Slide each up or down its own side — use both thumbs at once and rock them for the miniKORG "traveling" wah. The lit band between them is what you hear. Or let Sweep travel it for you.

Resonance?Emphasis right at the filter edges — adds a vocal, whistling peak as you sweep.6.0

Sweep?Lets the LFO rock the filter band for you — a hands-free "growl." Speed sets how fast.0%

Speed0.30 Hz

Mix100%

7.83 Hz — Guide

Sound Painter · what every control does

Getting started

Begin resonance

The power button — tap once to start audio (browsers require a tap before sound). Tap again to stop.

Render mode

Pulsed plays fine on speakers. Binaural needs headphones (each ear gets a slightly different tone so 7.83 Hz appears as a beat). Doppler renders the tone through its own moving-source engine so the resonance circles or sweeps past you. Doppler-Layered keeps a steady pulsed tone and adds a second moving copy on its own channel. The Doppler pop-out (Orbit/Fly-by, Speed, Amount) controls this source motion — it’s separate from the Dopplerizer effect in the rack below.

Volume

Master output level.

Listening safety

Settings menu

The ⚙ gear button (top-right) centralizes everything: a summary of your setup, Change audio setup (re-run the wizard when your gear changes), the limiter and tooltip switches, and buttons to replay the tour or open this help.

Clipping alerts

If the output starts to distort, a tip appears naming the most likely cause — a high Volume, subwoofer level, reverb/delay/feedback, or the limiter being off — so you can fix it fast.

Scroll rail

The thin strip down the right edge scrolls the page — drag it to move without touching any of the controls. Prefer it on the other side? Flip Scroll rail on left in ⚙ Settings.

Setup wizard

On first run you’re asked about your device, bass appetite, hearing sensitivity, and how often to warn you. Answers are saved and used to decide when to ask before intense actions. Re-open it any time with 🔊 Safety setup below or from ⚙ Settings.

Safety limiter

A soft limiter on the master output catches loud peaks and clipping. It’s on by default; the checkbox by the volume lets you toggle it (you’ll get a heads-up when turning it off).

Warnings

Enabling the subwoofer, loading a dramatic effect reset, or engaging Ludicrous Feed will ask first when your profile suggests caution.

🚀 Ludicrous Feed

One tap for a lush hi-fidelity showcase: subwoofer with extended low end, Jazz EQ, tasteful reverb/delay/phaser, a slow-winding Leslie rotary, and the Traveler opened wide — at a comfortable volume, limiter on. It first re-runs your audio setup so the mix matches your current gear.

⭳ Presets

Save the entire state — carrier, render mode, source-Doppler, volume, every effect, EQ, subwoofer, ambience beds and the visualizer — into named slots you can reload any time. Export copies it all to a text string (or a .txt file) to back up or share; Import/Load pastes one back. Presets are kept on this device.

Ambience

🌊 Underwater

Immerses the whole sound in water — a medium, not a render mode, so it colours everything (tone, ambience, media). Water absorbs high frequencies, so the sound goes muffled; warm and cold layers bend the sound rays, heard as a slow drifting of the tone colour; and the deep-ocean SOFAR channel — a natural waveguide that carries low sound for thousands of kilometres — is modelled as a long, darkening tail. The Depth / distance slider sets how deep and far: more muffled, more drift, more channelled tail as you raise it. Because sound travels ~4.5× faster in water, a moving source (try it with Doppler mode on) shifts pitch far less than it would in air for the same speed — the medium is doing the work. Pairs naturally with the Blue whale, Ocean and Bubbles beds.

Sound beds

All synthesized live — ocean, rain, drops, thunder, heartbeat, purr, whale, bubbles, stream, a gentle funk Hammond organ progression, a chaka funk-organ rhythm stab (with its own Character, Rate, Attack and Speed sliders to shape the “chucka-chucka”), birdsong, plus dolphin trills (sweeping whistles), dolphin smiles (giddy burst-pulses), and FishMe — a James-Brown “hit me!” rhythmic dolphin stab that grooves on the beat. Rain drops have Attack, Character, Randomization, Swell and Speed sliders (Speed changes only how often drips fall, not the drip sound). Birdsong and each dolphin bed have their own Rate, Attack and Character sliders (Rate changes only how often the call loops, never the speed of the sound itself). Every bed has its own shaping sliders that appear beneath it when switched on — continuous beds (ocean, rain, cat purr, stream, funk organ) get Character, Movement and Attack; event beds (rain drops, heartbeat, whale, bubbles, chaka, birdsong, dolphins) get some mix of Rate, Attack, Character (and drops adds Randomization + Swell). Rate/Speed only change how often a sound repeats, never the playback speed of the sound itself. Tap ⚙ Modifiers at the top of the Ambience panel to show or hide all these shaping sliders at once. Toggle any bed on and blend with its level slider. Heartbeat has a BPM control.

Media player

Your tracks

Add local audio files and play them alongside the tone. Prev / play / next / seek / loop / shuffle.

Through FX

When on, your track runs through the effects, EQ & subwoofer too. Off = clean playback.

Graphic EQ

10 bands

Boost/cut from 32 Hz to 16 kHz (±12 dB). Left = bass, right = treble.

Preset menu

One-tap curves: Reset (flat), Jazz, Funk, Ambient, Blue whale, Rock, Classical, Small speaker (rolls off deep lows and lifts mids/presence to suit tiny speakers — not bass-boosted), and Billy Bass (a big, fun low-end boost). Nudging any band shows Custom.

Effects rack

Each effect has an on/off title bar, sliders, and a ↺ Reset ▾ button that pops out three starting points - Null (everything at zero, to build up from nothing), Subtle (a gentle touch), and Dramatic (a bold setting). After a Null reset, a coach tip reminds you to raise Mix first - if Mix is 0 (or the effect is off) a slider change will not be audible yet, and the app gently points that out. At the top of the rack, ⏻ Bypass all FX mutes the whole chain in one tap (settings kept - just the dry signal). Tip access: the hint markers are hidden so they do not fight the sliders - press and hold an effect's title bar to reveal them.

Subwoofer amp

Adds felt low end. Crossover = the frequency below which it works; Sub-harmonic = a synthesized octave-below tone for extra weight; Amp level = how much.

Phaser

Sweeping notches for a whooshing shimmer. Rate = sweep speed; Depth = how far it sweeps; Mix = wet/dry blend.

Stereo flanger

A short modulated delay → metallic jet-sweep. Rate, Depth, Feedback (ringing intensity), Mix.

Digital delay

Echoes. Time = gap between repeats; Feedback = how many repeats; Tone = how dark each repeat is; Mix.

Reverb

Room/space tail. Size = small room → cathedral; Mix = wet/dry.

Dopplerizer

A downstream effect that moves the whole processed signal around you — Orbit circles, Fly-by sweeps past. Speed, Amount (pitch-bend + movement strength), Mix. This is a separate pass from the source Doppler render mode, and has its own settings.

Rotary speaker

A Leslie-style spinning cabinet. Chorale (slow) / Tremolo (fast), Depth, Mix. The ⚙ Advanced panel exposes separate horn/bass rotor speeds, spin-up times, crossover, width, pitch & tremolo depth.

Traveler

The miniKORG dual filter: a low-pass ceiling over a high-pass floor. Drag the two thumb-pads (or rock both) to sweep the lit band you hear. Resonance = vocal peak at the edges; Sweep = let the LFO travel it hands-free; Speed = LFO rate; Mix.

Visualizer

Show / hide picker

Tap ▤ Modes at the left of the visualizer bar to collapse the whole picker into a tidy panel (or bring it back). Your choice is remembered. The Rotate, Dim and Full buttons stay put.

⟳ Rotate

Auto-shuffles the visualizer: it jumps to a random look and variant for an unpredictable hands-free light show. The Rotate hold slider (in the visualizer controls) sets how long each look is shown, from 4 to 60 seconds. Tap any mode to stop.

◆ Rich / ◇ Lite

Toggles between the Rich visuals (everything on) and a Lite mode that pauses the heavy visualizers and drops the display to a calm, slow pulse. The sound engine runs on its own audio thread, so this never changes what you hear — it simply frees the processor and saves battery on lower-powered phones. Your choice is remembered.

Modes

Tap a name to select it; tap it again to cycle its variants. Twelve families: Scope, Fractal, Interpolate, iTuneSim, Aestesis, Hopalong, Swirl, Painter, the pastel-liquid Flow, CMYK (translucent CMY circles & triangles overlapping like a Venn diagram — overlaps form additive secondaries: cyan+magenta→blue, cyan+yellow→green, magenta+yellow→red, all three→white; plus perspective cubes), Crystal Moon (a faceted crescent refracting the spectrum), and Sierpinski 8 — dual rainbow Sierpiński triangles forming an “8” frame that zooms inward through its crossing point to reveal the next 8 within, endlessly. Its four variants are all built as a genuine fractal: (1) a flight that flies forward through the crossing point of one dual-8 to find a complete smaller 8 nested within it, then the next 8 beyond that, endlessly; (2) the chaos game — the gasket's actual iterated function system, plotting points that converge live onto the Sierpiński attractor; (3) the same nested flight breathing with the 7.83 Hz pulse; and (4) a progressive zoom that continuously magnifies deeper and deeper, eases to a stop at a safe maximum magnification, holds a shimmer, then gently resets to wide and repeats. Finally, Eclipse Leaves recreates the real optical effect where gaps between leaves act as pinhole cameras, each projecting a crescent image of an eclipsed sun onto a warm sunlit wall — the scope waveform sways the leaves like wind, so the scattered crescents drift, smear and morph. Its variants are a partial eclipse, a deep near-total, and a slow sweep across the whole event. And Laser Show is a concert laser rig cutting through volumetric fog — banks of thin bright beams sweep with the scope waveform and bloom where they cross the haze, flashing and widening on the beat. Its six variants are a fan sweep from a bottom truss, a two-sided crossfire, a radial burst from centre, overhead down-scanners, a laser tunnel (concentric rings receding to a vanishing point with fog rolling in and out, the beams refracting through the haze), and fast-pan sheets — the beam panning back and forth faster than the eye so it smears into big solid bands of light, with the fog rendered as turbulent, multi-octave fractal smoke churning inside them.

Settings

Sensitivity, smoothing, beat response and speed shape how it reacts.

Fractal · poured paint

The Fractal mode's fourth variant is a slow, reflective poured-paint vortex — several distinct paint colours flow in ribbons that marble and mix, swirling around an open eye. Inside the eye a spin-art scope injects fresh colour in reaction to the sound and flings it outward along the spin; the scope's spin speed pulses with the music and its shape cycles between a linear trace, a circular waveform ring, and a spinning rose figure.

Fractal · pendulum art

The Fractal mode's fifth variant is a harmonograph — a pendulum-painting table where layered lateral and rotary pendulums trace dense, decaying spirograph webs that build up on the canvas like dripped paint. Loudness sets the swing speed, treble picks the paint colour, and beats drip fresh bursts.

Vertigo Saturn

A warm, Cassini-style hero view: a banded gas-giant sphere with rings orbiting it as a tilted ellipse — the back of the ring passes behind the globe, the front crosses over it. Fine ivory-and-tan bands with dark Cassini-Division gaps, the planet's shadow cast onto the rings, with a sun flare at the limb. A Hitchcock dolly-zoom runs continuously — the planet holds a fixed size while the rings and starfield rush outward and back, that unsettling vertigo warp of a dolly-in against a zoom-out; bass and beats deepen the pull. The rings are the audio: band brightness shimmers with the live spectrum and waveform, bass swells the limb glow, treble drifts the banding, beats pulse the whole scene. A slow cinematic pan drifts the camera (tie its rate to the visualizer Speed control). Six warm palette variants (ivory Cassini, golden hour, pale ice, dusty rose, ember, sage-gold) — re-tap to cycle.

Ring Light

A tilted ellipse of pure streaming light — no planet, but now with fine Saturn-like banding and dark Cassini-style gaps, and a ripple wave of brightness travelling through the rings (a bright front sweeping outward and back). Deeply reactive and varied: the bands are split across the spectrum — inner rings ride the bass, middle rings the mids, outer rings the treble — a bright crest spirals around with the rotation, and beats fire a radial pulse that races outward through the stack. Bass swells the glow bloom, treble lifts the drifting sparks. A slow roll tilts the ellipse; set the sweep rate with the visualizer Speed control. Five colour moods (amber-gold, icy blue, violet, emerald, ember red-gold) — re-tap to cycle.

Hyperspace

The light-speed jump: stars stream from a central vanishing point straight outward, each drawn as a streak that elongates with distance — points near the centre, long blue-white lines at the edges. The live scope is the throttle: quiet passages drift as a calm starfield, loud passages and beats push the jump so the streaks stretch into full hyperspace lines with a bright core flash and a warp-tunnel glow. Speed sets how hard it pushes. Four variants tint the jump (classic blue-white, icy, violet warp, amber red-shift) — re-tap to cycle.

Star Trails

A slow time-lapse of a night sky where the stars rise vertically in long, gently-curving streaks — sweeping upward like a wide, calm fountain of light rather than arcing sideways. A dark horizon line sits low in the frame with near-black ground below it and a dense star field filling the sky above. The rise is steady and slow; the scope brightens the field and lengthens the trails, bass lifts the faint horizon glow, beats add sparkle. Set the rise rate with the visualizer Speed control. Four variants shift colour (blue, brighter, teal, violet) — re-tap to cycle.

Ripples

Concentric perfectly-circular rings radiating from a centre point, like a pond or sonar. The ripple is a brightness wave: bands of rings darken and brighten in sequence as a wave travels inward and outward through them, the rings themselves staying still and round. The live scope drives the wave — overall level deepens the light-and-dark contrast and sharpens the peaks, bass sets how many bands ride across, and beats send brighter pulses and swell the centre core. Dark, smooth and meditative, with a deep vignette. Five moods (graphite, cool blue-grey, warm sepia, teal, violet ash) — re-tap to cycle.

⟳ Rotate

Auto-cycles through the looks at random; set the seconds-per-look with the Rotate hold slider (4–60s).

⛶ Full

Fullscreen. Exit the same way, or press Esc.

◐ Dim

In fullscreen, fades the controls for an immersive show; Exit stays reachable. Triple-tap anywhere to exit as a failsafe.

Show tooltips the little “?” hints on tricky controls

7.83Hz

7.83 Hz — Guide

Getting started

Listening safety

Ambience

Media player

Graphic EQ

Effects rack

Visualizer

Welcome

Listen safely

What are you listening on?

Deep bass & subwoofer — how much?

Any hearing sensitivity, tinnitus, or listening with kids nearby?

Warn me before loud / intense actions?

Heads up

Settings

Audio setup

Safety & sound

Guides

Presets

Save current settings

Saved presets

Export / Import