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A Sound Level Meter featured with automatic estimation of the measurement uncertainty
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2022 (English)In: Measurement, ISSN 0263-2241, E-ISSN 1873-412X, Vol. 188, article id 110409Article in journal (Refereed) Published
Abstract [en]

In the area of measuring the environmental noise the equivalent sound pressure level LA,eq is adopted and compared with legal thresholds in order to characterize the site of interest. The paper describes an innovative Sound Level Meter (SLM) able to provide information about the measurand contribution to the measurement uncertainty estimation. This measurement technology is made possible thanks to an approach based on bootstrap method for selecting the suitable measurement episode for an estimation of LAeq. The firmware implementation of the developed SLM is disclosed with reference to a low-cost platform for real-time execution of the proposed methodology. Finally, a metrological characterization of the prototype performed in laboratory is reported as well as the performance comparison with a class 1 SLM in a real scenario. As a result, the smart features of the new SLM may be easily implemented by including commercial devices into the instrument schematics. 

Place, publisher, year, edition, pages
2022. Vol. 188, article id 110409
Keywords [en]
Bootstrap method, Measurement time interval, Measurement uncertainty, Noise control, Real time systems, Statistical analysis
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-43869DOI: 10.1016/j.measurement.2021.110409ISI: 000742843800002Scopus ID: 2-s2.0-85119428886OAI: oai:DiVA.org:miun-43869DiVA, id: diva2:1615523
Available from: 2021-11-30 Created: 2021-11-30 Last updated: 2022-01-27Bibliographically approved

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Lundgren, Jan

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