TAS — Topological Acoustic Stylus Research Workbench

An offline, deterministic acoustic-field simulator and claim-audit instrument.

Open the workbench · Read the model · Inspect the claim ledger · Safety boundary

Caution

Not a medical device. TAS is not a treatment planner, exposure calculator, diagnostic system, or evidence that the proposed therapy works. Do not use its output on people or animals.

What this repository does

Robert Dumont's AMENRA S-DMT White Paper 83 proposes a “Topological Acoustic Stylus”: a phased-array ultrasound system intended to form acoustic patterns in tissue. The proposal combines established acoustic engineering with speculative geometric and biological claims.

This repository turns that proposal into two things that can be tested:

1. an executable, dependency-free model of a declared two-layer acoustic phantom; and
2. an explicit ledger separating established physics, experimental biology, undefined mathematics, and unsupported therapeutic claims.

The workbench does not silently convert an evocative diagram into fake precision. Where the source leaves a variable, operator, boundary condition, or calibration undefined, TAS says so and uses a named proxy only when that proxy is useful.

Workbench features

• 4–64 element linear phased array
• homogeneous focusing, steered plane-wave, heterogeneous straight-ray delay, and golden-phase perturbation modes
• two-layer water / soft-tissue / fat / muscle / cortical-bone proxies
• frequency-dependent attenuation and first-order interface reflection
• pressure amplitude, intensity, phase, slowed wave, modal target, and field-error views
• explicit 2D rectangular mode resolver, including a reproducible interpretation of L39
• live wavelength, focal ratio, modal overlap, reflectance, MI screening proxy, and intensity proxy
• numerical audit of the White Paper 83 frequency equations against its tissue table
• deterministic JSON experiment records and fingerprints
• 432 Hz heterodyned parameter sonification with offline WAV rendering
• no package manager, server, framework, CDN, cookies, analytics, or network calls

Run it

Download the repository and open index.html in a modern browser. ES modules are deliberately not used, so the lab works from file:// without a local server.

For a conventional local URL, an optional static server also works:

python3 -m http.server 8000

Then visit http://localhost:8000.

What the model actually solves

The visual field is a linear frequency-domain scalar proxy:

$$ \tilde p(x,z)=\sum_{j=1}^{N} \frac{a_j T(x,z)e^{-A_j(x,z)}}{\sqrt{r_j}} e^{i[\Phi_j(x,z)+\phi_j]}. $$

It includes element phase, distance spreading, layer-dependent attenuation, a straight-line two-medium travel-time approximation, and an optional first reflected path. It does not solve nonlinear acoustics, 3D anatomy, elastic shear conversion, refraction, heat transfer, perfusion, cavitation, or cell behaviour. See docs/MODEL.md for every equation and assumption.

The L39 interpretation

White Paper 83 does not define an eigenproblem for L39. An eigenmode requires at least a domain, operator, material field, and boundary conditions.

TAS therefore declares its own falsifiable interpretation: L39 is the 39th eigenvalue-ranked mode of a 2D rectangular scalar cavity with Dirichlet boundaries. The workbench shows the resolved mode pair and frequency. This is a mathematical comparison target—not a biological eigenmode.

Source-equation audit

The paper supplies:

$$ \gamma=\frac{\sqrt 5}{13},\quad \beta=11.653,\quad C=\frac{1}{\sqrt 2},\quad f_0=1\ \mathrm{Hz}, $$

$$ f_{n,m}=f_0,\beta^{(n-1)C}\left(\frac{3}{2}\right)^{m-1}, \qquad f_k\approx 8^{39-k}\ \mathrm{Hz}. $$

Using the printed values literally, neither frequency expression reproduces the paper's four tissue-frequency bands without an additional normalization or mapping. TAS calculates the discrepancy live and exports it in every experiment record. This is a repairable specification gap, not a value to conceal.

Evidence boundary

Source idea	Current classification	TAS treatment
Phased-array focusing	Established engineering	Implemented as a linear phasor model
Heterogeneous phase correction	Established in principle	Straight-ray approximation, labelled as such
Ultrasound-generated shear waves	Established by radiation-force elastography	Elastic conversion is not simulated
PIEZO1 response to ultrasound	Experimental, model-dependent	Documented; no regeneration inference
Universal 55.17° zero-reflection angle	Unsupported by a boundary derivation	Preserved as a test preset
Biological L39 eigenmode	Undefined	Replaced by an explicit rectangular-cavity proxy
1 Hz regenerative refresh	Unsupported	Exposed as a variable and control condition
Water memory / geometric phase storage	Unsupported	Excluded from the physics model
Directed human tissue regeneration	Unproven	No efficacy output exists

The complete, source-by-source analysis is in docs/CLAIMS.md.

Exposure display

The Mechanical Index value is an educational screening proxy using the conventional 0.3 dB·cm⁻¹·MHz⁻¹ derating rule. It is not standards-compliant dosimetry and a low value is not a safety clearance. Temperature is deliberately shown as not solved.

Any genuine prototype programme must begin with calibrated free-field measurements and inert phantoms, follow recognised ultrasound reporting and safety standards, and obtain the required ethics and regulatory approvals before biological exposure. See docs/SAFETY.md.

Determinism and exports

Simulation-critical inputs are canonicalised with sorted JSON keys and fingerprinted with FNV-1a. The same TAS version and experiment state produce the same field arrays, phase delays, metrics, audit values, and fingerprint.

An exported record includes:

• all declared inputs;
• element positions, phases, and phase-equivalent delays;
• field and exposure proxies;
• the selected modal eigenpair;
• S-DMT constants and tissue-band consistency audit;
• the model description and limitations; and
• a deterministic fingerprint.

Tests

No install step is required.

node --test tests/*.test.cjs
node --check js/physics.js
node --check js/audio.js
node --check js/app.js
python3 tests/static_check.py

The GitHub Actions workflow runs the same checks without building or transforming the static site.

Repository map

index.html                 Offline workbench
styles.css                 Interface and responsive layout
js/physics.js              Deterministic acoustic and S-DMT audit model
js/audio.js                Web Audio mapping and WAV encoder
js/app.js                  Controls, canvas renderer, import/export
docs/MODEL.md              Equations, assumptions, and numerical limits
docs/CLAIMS.md             Evidence and falsifiability ledger
docs/SAFETY.md             Non-clinical use boundary
docs/SOURCES.md            Primary and authoritative sources
presets/                   Portable example experiment states
source/                    Supplied concept documents and provenance
tests/                     Physics, determinism, WAV, and static checks

Provenance and credit

• Original TAS / AMENRA S-DMT concept: Robert Dumont (Voltardark) and the named AMENRA S-DMT collective
• Research translation, implementation, evidence boundary, and sonification: Trent Slade / QSOL-IMC
• White Paper 83 and the supplied slide deck are preserved under source/ for auditability; their inclusion does not imply scientific validation.

License

Code and original TAS workbench documentation are licensed under MPL-2.0. Supplied source documents remain attributable to their original authors and are included for research review and provenance.