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Analysis and Acoustic Event Classification of Environmental Data Collected in a Citizen Science Project

Author

Listed:
  • Daniel Bonet-Solà

    (Human Environment Research (HER), La Salle—Universitat Ramon Llull, Sant Joan de La Salle, 42, 08022 Barcelona, Spain)

  • Ester Vidaña-Vila

    (Human Environment Research (HER), La Salle—Universitat Ramon Llull, Sant Joan de La Salle, 42, 08022 Barcelona, Spain)

  • Rosa Ma Alsina-Pagès

    (Human Environment Research (HER), La Salle—Universitat Ramon Llull, Sant Joan de La Salle, 42, 08022 Barcelona, Spain)

Abstract

Citizen science can serve as a tool to obtain information about changes in the soundscape. One of the challenges of citizen science projects is the processing of data gathered by the citizens, to obtain conclusions. As part of the project Sons al Balcó , authors aim to study the soundscape in Catalonia during the lockdown due to the COVID-19 pandemic and afterwards and design a tool to automatically detect sound events as a first step to assess the quality of the soundscape. This paper details and compares the acoustic samples of the two collecting campaigns of the Sons al Balcó project. While the 2020 campaign obtained 365 videos, the 2021 campaign obtained 237. Later, a convolutional neural network is trained to automatically detect and classify acoustic events even if they occur simultaneously. Event based macro F1-score tops 50% for both campaigns for the most prevalent noise sources. However, results suggest that not all the categories are equally detected: the percentage of prevalence of an event in the dataset and its foregound-to-background ratio play a decisive role.

Suggested Citation

  • Daniel Bonet-Solà & Ester Vidaña-Vila & Rosa Ma Alsina-Pagès, 2023. "Analysis and Acoustic Event Classification of Environmental Data Collected in a Citizen Science Project," IJERPH, MDPI, vol. 20(4), pages 1-23, February.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:4:p:3683-:d:1073465
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    References listed on IDEAS

    as
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    2. Fabrizio Minichilli & Francesca Gorini & Elena Ascari & Fabrizio Bianchi & Alessio Coi & Luca Fredianelli & Gaetano Licitra & Federica Manzoli & Lorena Mezzasalma & Liliana Cori, 2018. "Annoyance Judgment and Measurements of Environmental Noise: A Focus on Italian Secondary Schools," IJERPH, MDPI, vol. 15(2), pages 1-17, January.
    3. Davide Petri & Gaetano Licitra & Maria Angela Vigotti & Luca Fredianelli, 2021. "Effects of Exposure to Road, Railway, Airport and Recreational Noise on Blood Pressure and Hypertension," IJERPH, MDPI, vol. 18(17), pages 1-15, August.
    4. Daniel Bonet-Solà & Carme Martínez-Suquía & Rosa Ma Alsina-Pagès & Pau Bergadà, 2021. "The Soundscape of the COVID-19 Lockdown: Barcelona Noise Monitoring Network Case Study," IJERPH, MDPI, vol. 18(11), pages 1-30, May.
    5. César Asensio & Pierre Aumond & Arnaud Can & Luis Gascó & Peter Lercher & Jean-Marc Wunderli & Catherine Lavandier & Guillermo de Arcas & Carlos Ribeiro & Patricio Muñoz & Gaetano Licitra, 2020. "A Taxonomy Proposal for the Assessment of the Changes in Soundscape Resulting from the COVID-19 Lockdown," IJERPH, MDPI, vol. 17(12), pages 1-9, June.
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