Geographic maps have always engaged our eyes. What if they could engage our ears too?

We are developing a library called "geospatial-audio-js," an open-source JavaScript library that connects geographic coordinates to the Web Audio API's 3D sound engine (HRTF). Sound sources are placed at real-world lat/lon/altitude positions, and the listener's orientation automatically synchronizes with the map camera in real time — whether you're using MapLibre GL JS, Leaflet, or CesiumJS.
Spatial audio opens meaningful possibilities beyond novelty: audio guides for tourism and cultural heritage sites, accessibility tools that let visually impaired users navigate a map by sound, soundscape layers tied to environmental field data, and sensory-rich integrations with XR and location-based applications.

With just a few lines of code, any existing web map can gain a new sensory dimension. This talk introduces the library, walks through real-world use cases, and includes a live demo.