# Hydrophones Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/hydrophones
> Markdown URL: https://aitinkerers.org/technologies/hydrophones.md
> Technology record last updated: 2026-05-04T15:32:56Z
> Generated: 2026-09-21T22:44:55Z

The hydrophone is a specialized underwater microphone: it converts acoustic pressure waves in water into measurable electrical signals using piezoelectric ceramics.

This is a critical sensor for underwater acoustics, functioning by leveraging the piezoelectric effect in ceramics to transduce pressure changes into voltage signals. Unlike air microphones, hydrophones are engineered for high-pressure aquatic environments, capturing sound across a wide frequency range. Applications are diverse and specific: the U.S. Navy uses them in sonobuoys for anti-submarine warfare, while NOAA's Pacific Marine Environmental Laboratory (PMEL) deploys them to monitor global ocean acoustics, tracking marine mammal vocalizations (e.g., whale calls) and geophysical events like earthquakes or icequakes. Deploying multiple hydrophones in an array amplifies sensitivity and enables precise directional tracking of sound sources.

- Official technology site: https://oceanservice.noaa.gov/facts/hydrophone.html
- Public AI Tinkerers demos and talks: 1
- Result page: 1 of 1

## Recent Public Talks and Demos

### [A platform to embed your model to chat with dolphins at sea](https://montreal.aitinkerers.org/talks/rsvp_Sc0UeVyAbLg)

A working Android application in which a model developer could embed their own TFLite model. Possible functions: 1) filter noise, 2) recognize complex vocalizations, 3) propose acoustic replies.

- Event context: AI Tinkerers Montreal – Spooky October 2025 Meetup — 2025-10-21 — Montreal
- Public talk page: https://montreal.aitinkerers.org/talks/rsvp_Sc0UeVyAbLg

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