Hear the Map

Explore the world by ear. Put on headphones: left and right matter.

About Hear the Map

What it is

A map you can explore with your ears. Height becomes pitch, water becomes a soft wash, left and right follow the map, and recent earthquakes answer back like sonar. Every sound also comes with words for screen readers.

Why it matters

About 43 million people worldwide are blind, and 295 million more have moderate or severe vision impairment. For them, a web map is usually a blank rectangle with a one-line description. A description tells you a map exists. Sound lets you explore it yourself: find the valley, follow a ridge, hear where the land meets the sea.

What's new

Map sonification has been tried before, in research prototypes and in specialist map viewers. This project shows how to do it directly inside the ArcGIS Maps SDK for JavaScript, with live terrain and live data, as open source that any developer can add to their own maps. Once the map settles, listening makes no network requests at all.

Keyboard

Arrow keysPan the map. The center is your listening point.
+ -Zoom in and out
SpaceProfile sweep: hear the whole view west to east
QEarthquake sonar around the listening point
SSay where I am and the elevation
LSnap pitch to a musical scale
VRead announcements aloud
MMute
AAbout this project