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Customer Evidence Summary

This generated page summarizes the v1 release evidence in the terms a product or engineering team usually needs before selecting an operating point. It intentionally combines compression level, fidelity, physiological utility, stitching behavior, and deploy footprint instead of leading with one waveform metric.

Release decision overview

Signal Published CR range Recommended operating read Evidence surfaces
PPG 2x-32x 2x-8x for tight HR/HRV preservation; 16x-32x when storage or radio budget dominates. truth PRD, PRDN-noise, HR/peak timing, band error, stitching, deploy footprint
ECG 2x-64x 4x-16x for morphology-focused use; 32x-64x for bandwidth-limited capture paths. truth PRD, PRDN-noise, HR/peak timing, band error, stitching, deploy footprint

Compression and deploy ladder

The tables below are generated from local golden quality_scorecard.json files and deploy manifests. Truth PRD is measured against the clean reference when available; faithful PRD is measured against the recorded input; PRDN-noise tracks residual noise-normalized distortion. Edge payload is the encoder TFLite, decoder TFLite, and codebook NPZ size, excluding validation samples and documentation files.

PPG release ladder

CR Frame N Truth PRD% Faithful PRD% PRDN-noise% HR MAE bpm Pulse-band error Coherence Seam ratio Edge payload Encoder Decoder Codebook
2x 5000 ms 9788 0.62 2.59 0.15 0.19 0.0155 0.9928 - 88 KiB 5 KiB 19 KiB 65 KiB
4x 5000 ms 9789 1.14 3.44 0.23 0.29 0.5885 0.9861 - 147 KiB 28 KiB 54 KiB 65 KiB
8x 5000 ms 9789 2.66 5.10 0.64 0.49 0.6623 0.9565 - 196 KiB 39 KiB 92 KiB 65 KiB
16x 5000 ms 9789 5.75 7.54 0.79 0.88 12.5676 0.8991 - 300 KiB 54 KiB 180 KiB 65 KiB
32x 5000 ms 6336 12.35 12.08 0.20 1.79 0.0356 0.8014 - 267 KiB 54 KiB 180 KiB 33 KiB

ECG release ladder

CR Frame N Truth PRD% Faithful PRD% PRDN-noise% HR MAE bpm QRS-band error Coherence Seam ratio Edge payload Encoder Decoder Codebook
2x 2000 ms 1000 1.38 2.31 0.00 0.48 0.0081 1.0000 - 88 KiB 5 KiB 19 KiB 65 KiB
4x 2000 ms 1000 2.33 3.63 0.00 0.95 0.0104 1.0000 - 147 KiB 28 KiB 54 KiB 65 KiB
8x 2000 ms 1000 3.84 6.03 0.00 1.39 0.0144 1.0000 - 196 KiB 39 KiB 92 KiB 65 KiB
16x 2000 ms 1000 7.28 9.72 0.04 2.05 0.0246 1.0000 - 300 KiB 54 KiB 180 KiB 65 KiB
32x 2000 ms 1000 13.27 14.59 0.78 2.34 0.0497 1.0000 0.176 267 KiB 54 KiB 180 KiB 33 KiB
64x 2000 ms 1000 20.49 21.05 3.53 3.00 0.0835 1.0000 - 397 KiB 76 KiB 289 KiB 33 KiB

How to use this page

  • Start with the CR ladder to identify feasible compression levels for memory, radio, or storage targets.
  • Use Truth PRD and PRDN-noise together when judging noisy recordings; faithful PRD alone can penalize codecs that suppress artifact energy.
  • Use HR MAE and band error as utility checks before moving to waveform examples and full scorecards.
  • Use seam ratio as the first-pass long-recording stitching check; model pages provide the visual and method-specific context.
  • Use edge-payload columns for target budgeting; parameter and MAC summaries can be added when those are reliably exported for every bundle.

Detailed modality pages remain the source for waveform examples, robustness plots, and reproduction commands: PPG models, ECG models, PPG CR vs fidelity, and ECG CR vs fidelity.