Maps (IMAGE) CNRS Caption Screen shot of the collaborative cartography available on Noise-planet.org, the community site for the NoiseCapture application. Cartographic representation of average sound levels measured in the city of Lyon. The colors represent intervals of sound levels. Credit CNRS-IFSTTAR. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.