site-nowyousea/content/docs-mvp/DATA.md

Data Pipeline (Acquisition → Transfer → Storage)

This document mirrors the /data page on the website and is meant to be versioned and reviewed.

Scenario A (default)

• Raw 192 kHz audio continuously when 4G throughput is OK.
• If throughput is low, use an adaptive strategy (compression / denoise / clips / features).

Acquisition (edge)

• Sample rate (recommended): 192 kHz
• Bit depth: 24-bit
• Channels: mono

Raw rate (order of magnitude)

• 192000 samples/s × 24-bit ≈ 576 kB/s (~0.56 MB/s)
• ~2.0 GB/hour
• ~49 GB/day

Transfer (4G)

• Raw 192 kHz mono 24-bit ≈ ~4.6 Mbps (payload only, no overhead)

Storage

Per station:

• ~49 GB/day
• ~343 GB/week
• ~18 TB/year

Optimizations (planned as feature branches)

• feat/data-compression (FLAC/Zstd, chunking)
• feat/data-downsample (192k→48k)
• feat/data-vad-events (VAD/events)
• feat/data-features-only (FFT/SPL/peaks only)
• feat/data-retention-policy (retention + aggregation)