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Main achievements of the EMRP sound power project and future prospects
RISE, SP – Sveriges Tekniska Forskningsinstitut.
2016 (English)In: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, 2016, p. 6811-6817Conference paper, Published paper (Refereed)
Abstract [en]

An independent method for the measurement of sound power, based on a primary standard traceable to units tied to fundamental constants, has been realised and tested. The most important achievement is that the uncertainty evaluation can be deduced in a direct and (mostly) analytical way from the primary standard and measurement environment parameters, both hemi free and reverberant acoustical fields have been considered. A new traceability line to the primary standard has been established, and the validity of the already available transfer standards has been investigated. All these achievements have the revision of the sound power measurement procedures, for which developments and validation has been carried out during the project, as a goal. Dissemination has been realised by papers, participation in conferences and a seminar. Future work will focus on improvement of the frequency range and uncertainty of the primary standard, establishment of measurement capabilities by means of key comparisons in the EURAMET region, declarations of services in the CIPM database and proposed revision of the ISO standards concerning sound power. Another important task is working among the acoustic industrial and metrological community to foster the acceptance of the new methods. Applications to calibration of microphone arrays are also possible. © 2016, German Acoustical Society (DEGA). All rights reserved.

Place, publisher, year, edition, pages
2016. p. 6811-6817
Keyword [en]
Primary standard, Sound power, Acoustic variables control, Uncertainty analysis, Acoustical field, Calibration of microphones, Fundamental constants, Measurement procedures, Primary standards, Transfer standard, Uncertainty evaluation, Acoustic noise
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27619Scopus ID: 2-s2.0-84994589448OAI: oai:DiVA.org:ri-27619DiVA, id: diva2:1059667
Conference
45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, 21 August 2016 through 24 August 2016
Available from: 2016-12-22 Created: 2016-12-21 Last updated: 2017-09-18Bibliographically approved

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CiteExportLink to record
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Citation style
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More styles
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Output format
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