Binaural
Two carriers, one per ear, offset by a small difference. The pulse is a product of hearing both at once, so it depends on separate delivery to each ear — this is the construction that needs headphones.
Anulum Institute
Fluctara
Structured audio, generated rather than replayed. Binaural, monaural, and isochronic construction from named parameters — and a published account of what the result measures.
Fluctara is not a medical device and does not diagnose, treat, or replace professional care.
01 The main product
Audio that is built,
not selected from a shelf.
Fluctara does not play a recording back to you. Each session is generated from parameters that are named, exposed, and the same ones described across this site. That is an unusual thing to lead with, and it is the point: if a system will not tell you what it produced, you cannot check it.
Monaural
The tones are summed before they reach the ear, so the pulse exists in the waveform itself. It survives a single speaker.
Isochronic
One carrier switched on and off at a pulse rate, with an explicit edge length so the switching does not produce a click.
And then it is measured. Rendered audio is analysed rather than assumed. Five source rates are supported, each with its own true-peak oversampling factor, and the 48 kHz path is checked against the EBU Loudness Test Set v5.0 minimum-requirement vectors. The quality report carries a receipt digest, so a report edited after the fact stops verifying.
Read how the signal is built02 Live model
Move four oscillators toward coherence.
This browser model demonstrates a mathematical order parameter. It is not EEG input or a brain measurement. It is not evidence of a personal outcome.
R = |N⁻¹ Σ eiθₙ|
- Order parameter
- 0.15
- Example beat difference
- 12.2 Hz
- Model regime
- Low
Start at a low device volume. Stop if uncomfortable. Headphones change the example but are not required.
03 The system in full
Every part of this,
written down.
Each page below states what it covers and what it does not claim. None of them ends without saying where the evidence stops.
Signal
How the signal is built
Binaural, monaural, and isochronic construction, seeded noise, spatial placement, and the loudness standard applied to the result.
RuntimeSessions and declared limits
Protocol phases, duration scaling, the five preflight states, compilation, and what a delivery record does and does not prove.
VisualThe visual layer
Illustration, simulation, and declared stimulus — kept apart, with rate and a static alternative always stated.
EvidenceEvidence architecture
Technical, research, and personal questions are not the same question. Here is how they are separated and enforced.
SafetyListening safety
Volume, when to stop, when not to listen, photosensitivity, and the boundary against medical use.
DataData and privacy
Sealed profile fields, what a session records, and why this website cannot make a network request at all.
BuildFor developers
The API, the operations command line, native acceleration, and the licence that applies when you build on it.
AnswersQuestions and direct answers
Headphones, accounts, safety, and what Fluctara does and does not claim — answered plainly.
ProjectAbout this project
Authorship, ORCID, licensing, language, and how a correction is submitted and recorded.
ExplorePrebuilt programmes
Preview prepared programmes and check purchase availability. Available editions use guest checkout — no app account needed.
SetsCollections
Named sets of exact programme versions. A collection never broadens the evidence or safety status of its members.
Two of these are living records rather than explanations: the Evidence Lens publishes research findings with their method, uncertainty, limitations, and expiry attached, and Reliability publishes technical records. Both are empty until something has passed review, and an empty record is shown as empty rather than filled with something weaker.
04 Supplementary access
Ready-made when
you want it simple.
Prebuilt programmes are prepared audio files for direct purchase when their programme page enables checkout. Preview listings are not offers for sale. No app account is required for an available guest purchase.
Deep Sleep Induction
45 minutes · Audio: WAV, FLAC and MP3. Audio + video adds 1080p MP4.
Audio 7 EUR · Audio + video 14 EUR
View programme and buyInstant Calm
10 minutes · Audio: WAV, FLAC and MP3. Audio + video adds 1080p MP4.
Audio 4 EUR · Audio + video 8 EUR
View programme and buyDeep Focus & Flow State
60 minutes · Audio: WAV, FLAC and MP3. Audio + video adds 1080p MP4.
Audio 9 EUR · Audio + video 18 EUR
View programme and buyHear a short preview of a generated session.
Exact file. Version, format, duration, and SHA-256 identity travel with every approved release.
Direct delivery. Approved purchases use guest checkout and private passwordless delivery without an app gate.
Explicit limits. Safety context and evidence status appear beside the offer instead of being converted into a promise.
05 Start a session
Enter the system.
Keep the limits visible.
Choose a protocol, review the current route, and run the structured session from Fluctara's primary application surface.