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ONC Hydrophone Data

This site is the user‑focused documentation for onc-hydrophone-data: a toolkit to download ONC hydrophone spectrograms/audio and generate custom spectrograms locally.

What you can do

  • Pull ONC spectrograms (MAT/PNG) for time ranges or sampled windows.
  • Download FLAC/WAV audio for matching ranges.
  • Run event‑based batches via JSON/CSV request files.
  • Generate local custom spectrograms from audio with your own FFT parameters.

Fast download model (ONC‑side parallelism)

This package submits multiple ONC data requests up front, then polls and downloads results as they complete. ONC processes those requests in parallel on their servers, which is much faster than submitting one request at a time and waiting for each to finish.

Parallel ONC request pipeline

  1. Quickstart for a minimal “download + plot” flow.
  2. Deployments & Inventory to pick valid dates and devices.
  3. Downloads for the most common workflows.
  4. Custom Spectrograms for local generation.

If you prefer notebooks, see notebooks/ONC_Data_Download_Tutorial.ipynb in the repo.