Actively reducing noise by ionizing air (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption Plasma can be used to reduce noise. Credit EPFL /LTS2 /Stanislav Sergeev & Mathias Delahaye Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.