Live instrument

The Pulse.. . . .

Connect a device that reads your heart, or the Muse that reads your brain, and your field becomes sound.

Devicesquiet

no device

Soundplayed by the readings

master35 heart bass100 beat kick100 breath wind100 bells · registers100 rng shaker100

Fieldsfive minutes · one clock

The heart's field5 min · 0.02 → 0.4 Hz, low at top

The brain's field1.5 → 45 Hz, low at top · whitened

The random source's field0.02 → 1 Hz, low at top · fair-scaled

how to read the fields

Each field is a spectrogram: every row a frequency, brightness its power, time running left to right. Drag the heart's field to look back through the past hour; one tap returns to the live edge.

The random source is fair-scaled: 1.0 is chance, and only deviation from chance builds structure. A flat field is a fair coin.

The brain's field is superlet rows from 1.5 to 45 Hz, whitened against the 1/f background, so what shows is departure, not the slope every brain has.

Nowno signal

—bpmheart rate

—mslast interval

—breath · RSA

—scorecoherence

—msrmssd · 60 s

—σrandom source

Heart

ECG130 Hz · raw

RR over timebeat to beat

Coherenceratio — · peak — Hz

Spectrum0.01 – 0.4 Hz

VLF

about these readings

Breath is derived from the rhythm itself (respiratory sinus arrhythmia); no belt is worn.

rmssd is 60 s of true successive beat differences, artifact pairs excluded.

Coherence follows the published HeartMath method over a 64 s window, updated every 5 s: ln(1 + peak/(total−peak)). 0.5 is basic, 1 good, 2 very good, 3 and above excellent.

Brain

Raw4 s per electrode · contact colour

Bandsfive minutes · relative power · δ θ α β γ

Skylark The lark climbs on your measured alpha. Settle, and fly. Fly

about the brain readings

Bands are smoothed over about 4 s. The field is a superlet spectrogram, whitened against the 1/f background so that what shows is departure, not the slope every brain has.

Random source— blk/s · 0 trials

Cumulative deviation5 min · 2σ band = chance

Twin percentilescoherence · LZ · entropy

about the random source

The page's own generator, seeded by clock jitter. Every reading is stamped by the one clock the heart uses.

Twin percentiles rank the coin's coherence, Lempel-Ziv complexity and multiscale entropy (−ln match) against arrival-conditioned shuffles; the shaded band is the null 95%. Display-grade only, never the registered tests.

Stateagainst your own baseline

—engagement

—settledness

loading…

key moments 0 this session · stretches above your own 90th percentile

no anchor yet · without it, scores run on population priors and say “calibrating”

what these numbers are

They describe autonomic dynamics associated with attention and ease: not emotions, not neurochemicals, not thoughts. Within-person comparisons only.

Practicewhile it records

The exercises open on top of this page. The live reading keeps recording beneath, and if the pulse is sounding it keeps sounding. Close the practice window to come back.

Record a sitsaved on this device only

Rate the sit1 – 10 · before any data is seen

quiet sit: hide the live view while recording. Watching your own heart is biofeedback.

● recording

0:00

export for analysis

include raw signals: ECG and EEG as .edf (these dominate the size)

A day-organised bundle: Kubios-ready rr.txt · rr.csv · 1 Hz features · coherence series · EDF when included · watch true-beat bursts · session and daily indexes · checksummed manifest · plain-language PRIVACY.md. Deterministic: the same data always yields the same bytes. Built on this device only.

where the data lives

Sits are saved on this device only. Export a file or delete them here; heart data is never uploaded. While this page has a live reading, open on screen or riding in the background, the stretch records itself as an ambient session, kept and exported like any sit. The random source's ordinary anonymous counts still reach the field, as on every page. They carry no heart.