Impedance deduction for vegetated roof surfaces: multiple geometry strategy

C. Liu, M. Hornikx

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

27 Citaten (Scopus)
67 Downloads (Pure)

Samenvatting

The transfer function method is an efficient procedure to deduce the ground surface impedance from short-range propagation measurements using one point source. It is able to provide a reasonable prediction of the surface impedance of a vegetated roof as well, and the characteristics of the vegetated roof can be explored by fitting an impedance model to the deducted surface impedance thereafter. However, the surface impedance is sensitive to the adopted measurement locations of transducers, and the impedance fitting procedure is dependent on the starting values of the impedance model parameters. This work shows the sensitivity of the predicted surface impedance on the adopted transducers' locations. In addition, the uniqueness of the fitting procedure will be investigated by multiple geometry setups on porous materials in a laboratory condition. This multiple setups practice and an improved measurement system can be employed to deduce the surface impedance of in-situ vegetated roof systems.

Originele taal-2Engels
Titel45th International Congress and Exposition on Noise Control Engineering : towards a quiter future, 21-24 August 2016, Hamburg, Germany
SubtitelTowards a Quieter Future
UitgeverijGerman Acoustical Society DEGA
Pagina's6423-6429
Aantal pagina's7
ISBN van geprinte versie978-3-939296-11-9
StatusGepubliceerd - 21 aug 2016
Evenement45th International Congress on Noise Control Engineering (INTER-NOISE 2016) - Congress Center Hamburg, Hamburg, Duitsland
Duur: 21 aug 201624 aug 2016
Congresnummer: 45
http://www.internoise2016.org

Congres

Congres45th International Congress on Noise Control Engineering (INTER-NOISE 2016)
Verkorte titelINTER-NOISE 2016
LandDuitsland
StadHamburg
Periode21/08/1624/08/16
Internet adres

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  • Citeer dit

    Liu, C., & Hornikx, M. (2016). Impedance deduction for vegetated roof surfaces: multiple geometry strategy. In 45th International Congress and Exposition on Noise Control Engineering : towards a quiter future, 21-24 August 2016, Hamburg, Germany: Towards a Quieter Future (blz. 6423-6429). German Acoustical Society DEGA.