Empezando

Session ─┬─ Source   (headset, camera, synthetic)
         ├─ Stream   (eeg, ppg, optics, imu, rppg-metrics, ppg-metrics, …)
         │    └─ Chunk  (Arrow IPC file + CRC32C, sequence 0, 1, 2, …)
         └─ Event    (markers and annotations)

# Not on npm yet. This command works after the first release.
npm install @elata-biosciences/biosignal-session

import {
  createRecorderHarness,
  createSyntheticSource,
} from '@elata-biosciences/biosignal-session/testing';

const h = createRecorderHarness();
const source = createSyntheticSource({ seed: 1234 });

await h.start();
await h.startSource(source);
source.pump(60_000);          // 60 s of synthetic EEG, rPPG, and PPG
await h.advance(60_000);
await source.stop();
await h.finalize();

h.core.state();               // "complete"

import { decodeChunk, readFloat32Column } from '@elata-biosciences/biosignal-session/browser';

const { table, identity } = decodeChunk(bytes);
const tp9 = readFloat32Column(table, 'TP9');