Investigation on the Dissemination of Unit Watt in Airborne Sound and Applications
Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming...
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Logos Verlag Berlin
2019
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=nlebk&AN=3541175&site=ehost-live header: @attributes: shortDbName: nlebk uiTerm: 3541175 longDbName: eBook Collection (EBSCOhost) uiTag: AN controlInfo: bkinfo: btl: Investigation on the Dissemination of Unit Watt in Airborne Sound and Applications aug: au: Spyros Brezas sertl: Aachener Beitrage Zur Akustik isbn: 9783832549718 imageinfo: pubinfo: dt: @attributes: year: 2019 month: 01 day: 01 dtAvail: @attributes: year: 2023 month: 04 day: 17 pub: Logos Verlag Berlin pubContract: Logos Verlag Berlin GmbH place: Berlin, Germany price: 0.01 limitsGroup: maxCheckoutDays: 1500 pda: N printPagesOffline: 100 printPagesOnline: 100 previewPages: 10000 prePubGroup: dewey: @attributes: class: 620.20287 item: 620 .20287 lc: @attributes: class: TA365 item: TA 365 artinfo: ui: 3541175 1266738606 formats: fmt: @attributes: type: EB doid: NL$3541175$PDF caption: PDF download: Y tig: atl: Investigation on the Dissemination of Unit Watt in Airborne Sound and Applications ptl: Investigation on the Dissemination of Unit Watt in Airborne Sound and Applications aug: au: Spyros Brezas su: Sound--Measurement Engineering--Acoustics sug: subj: SCIENCE / Physics / General Sound--Measurement Engineering--Acoustics ab: Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming at the establishment of traceability in airborne sound. This will enable the characterization of a sound source by its free field sound power. The dissertation describes a study on the dissemination process, which will allow the sound power of a device under test located at a real surrounding environment, to be referred to its free field sound power. Apart from the sound power, the corresponding uncertainty may be estimated in a transparent way, where each uncertainty component is provided. The basic tool for the dissemination process is the substitution method using aerodynamic reference sound sources, applied to both sound pressure and sound intensity measurements. Initially, a theoretical investigation deals with the factors that influence the substitution method. Experimental results are then presented based on measurements using a specially designed scanning apparatus. The transition from calibration to in situ conditions and the required correction, due to changes in environmental and operational conditions, is then discussed. In the last section, the sound power level of devices under test is determined along with its related uncertainty, which is further compared to the up-to-date uncertainty values. pubtype: eBook doctype: Book ougenre: Book language: English copyright: @attributes: flag: N copyrightText: holdings: @attributes: islocal: N |
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