Sensing Urban Spaces

Sound Map Citygram is an interactive environmental-sensing project, that focuses on capturing, mapping, and exploring invisible environmental energies that turn spaces into places.

Our first iteration—Citygram One—aims to create dynamic soundmaps that capture the sonic ebb-and-flow of our neighborhoods through Citygram’s plug-and-sense network technologies. Citygram’s technology captures soundscapes without compromising privacy: we measure acoustic energy levels (e.g. “volume”) which cannot be used to reconstruct the original captured sounds. As part of our outreach efforts, we invite citizen-scientists, artists, educators, and the general public to help in the creation of detailed soundmaps that will enable us to better understand our environment. Anyone with a computer, tablet, phablet, or smartphone and Internet connection can actively participate. Alternatively, we can provide non-intrusive Citygram sensors to further facilitate your participation.


Citygram is launching an initiative to bring awareness to the City’s no.1 complaint: noise pollution, an odorless, tasteless, and invisible environmental pollutant that affects us on a daily basis. Sensing “soundscape” data will allow us to better understand the relationship between noise pollution, and social, cultural, and ecological dynamics, while generating a new way for users to explore their environment.

How to Participate

You can easily start sensing your sound environment through CG's Visualizer.

If you prefer a more active approach, you can contribute by taking our Sound Event Annotator (SEA) survey here! SEA is working towards an artificially intelligent soundscape classification system using crowd-sourced data.

Also, becoming a Citygram “streamer,” you will be contributing to the development of dense, accessible, and meaningful soundmaps: all you need is a power outlet, WiFi, and Citygram’s plug-and-sense app or (free) custom sensor.