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The project is now closed and data collection is finished. Please fill this form ONLY if you started collecting data between March and end of July. Note also that you need to fill this form only ONCE for each recording device. In case of doubt, please contact the project managers before filling the form.



Project title

Silent·Cities — A participatory monitoring programme of an exceptional modification of urban soundscapes

Project leaders

Research location

  • GÉODE laboratory, CNRS, Toulouse 2 University, Maison de la Recherche, 5 allée Antonio Machado, 31058 Cedex 9, Toulouse, France;
  • IMBE laboratory, CNRS, IRD, Aix Marseille Univ, Avignon Université, Avenue Escadrille Normandie Niémen, 13397  Marseille, France;
  • IMT Atlantique, Electronics Department, Lab-STICC laboratory, CNRS, IMT Atlantique, 2 Rue de la Châtaigneraie, 35510 Cesson-Sévigné, France.

Project overview

The global COVID-19 pandemic that we are currently facing is forcing most countries around the world to put in place social distancing and/or drastic population containment measures. A notable effect of these measures is the reduction of many urban economic activities. This decline in activities is directly linked to a reduction in several inter- and intra-urban physical flows, first and foremost among which are individual travel — all modes combined — and motorized transport of people and goods. These movements and transport are two major sources of anthropogenic noise in all spaces, both urban and rural.

While we recognize the severity and serious consequences of the pandemic, we want to continue to do what we do the best: searching, testing, experimenting. In other words, we want to continue to question the world in which we live. Starting from the abnormal situation generated by the COVID-19 pandemic in territories placed in more or less strict containment, we propose to the Ecoacoustic international community to participate in a collection of urban sonic environments to document these rare soundscapes. Based on standardized global ecoacoustic monitoring over several weeks, we hope to achieve three scientific objectives:

  1. to study in “ordinary spaces” the ecoacoustic diversity usually masked by anthropogenic noise;
  2. to study, the relationship between biophony and anthropophony within different levels of economic activity, as the economic activity of territory will slowly be restored;
  3. to finely characterise the relationship linking the anthropogenic noise to the level of stable economic activity of a territory.

Participation form

If you agree to participate in this study, you will be asked several questions via this form:

  • your email;
  • if applicable, your institution of affiliation;
  • the recording equipment you will be using (Wildlife Acoustics SM4 or Open Acoustic Devices AudioMoth);
  • if you are using an AudioMoth, the device ID, and the serial number if you are using a SM4;
  • your time zone, your city of residence (the city in which you will install your recorder), your ZIP code, as well as your district of residence (the district in which you will install your recorder);
  • information to characterize your sonic environment under “normal” conditions;
  • information available to you on the containment measures in your city/country.

The approximate time required to complete the form is about ten minutes.

Your Privacy Rights

All information collected in this questionnaire will be treated anonymously and will remain confidential. They will be kept in a computer file in accordance with the French Loi Informatique et Libertés (Act N°78-17 Of 6 January 1978 On Information Technology, Data Files And Civil Liberties). The results obtained from the processing of this questionnaire may contribute to scientific publications, but the identity of the participants will not be revealed, and no information that could reveal your identity will be revealed.

Your rights to withdraw from the study at any time

Participation in this project is entirely voluntary. Please be aware that even if you decide to complete this form, it is possible to stop filling it in at any time, and until the final registration has been made, none of your data will be processed. Furthermore, in accordance with the French Loi Informatique et Libertés (Act N°78-17 Of 6 January 1978 On Information Technology, Data Files And Civil Liberties), you have the right to access and rectify any information concerning you, which you can exercise by contacting Samuel Challéat (, Amandine Gasc ( and/or Nicolas Farrugia (


The dataset will be stored by the Open Science Foundation (OSF) as a public dataset. As this project is being conducted in a collaborative manner, all participants will be authors on a data paper submitted to a journal (e.g. Nature Scientific Data).

Your rights to ask questions at any time

You can ask questions about the research at any time by contacting the project leaders by e-mail: Samuel Challéat (, Amandine Gasc ( and/or Nicolas Farrugia (

Consent to Participation

By completing the form on this interface, you certify that you have read and understood the above information and that you have been informed that you are free to withdraw your consent or to withdraw from this research at any time without prejudice.


Upon completion of the online form, we will review your inputs to check that you fulfill all requirements, and we will send you your participant identifier (between 0001 and 9999). You'll receive this email with your participant identifier in the next 48 hours. You don't need to wait for this email to start recording, as the identifier is only needed to upload your data. We will also use your email to give you updates about the project.

Thank you for your participation!
Samuel Challéat, Amandine Gasc, Nicolas Farrugia and Jérémy Froidevaux


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