Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Pressure Level Standard Deviation at Low Frecuencies: Effect of the Wall Vibrational Field
Year:2012
Research Areas
  • Civil engineering and architecture
Information
Abstract
Knowledge of the uncertainty of measurement of testing results is important when results have to be compared with limits and specifications. In the measurement of sound insulation following standards ISO 140-4 and 140-5 the uncertainty of the final magnitude is mainly associated to the average sound pressure levels L1 and L2 measured. However, the study of sound fields in enclosed spaces is very difficult: there are a wide variety of rooms with different sound fields depending on factors as volume, geometry and materials. A parameter what allows us to quantify the spatial variation of the sound pressure level is the standard deviation of the pressure levels measured at the different positions of the room. Based on the analysis of this parameter some results have been pointed out: we show examples on the influence of the microphone positions and the wall characteristics on the uncertainty of the final magnitudes mainly at the low frequencies regime. In this line, we propose a theoretical calculus of the standard deviation as a combined uncertainty of the standard deviation already proposed in the literature focused in the room geometry and the standard deviation associated to the wall vibrational field
International
Si
JCR
Si
Title
Archives of Acoustics
ISBN
0137-5075
Impact factor JCR
0,847
Impact info
Volume
37
10.2478/v10168-012-0066-8
Journal number
4
From page
561
To page
569
Month
SIN MES
Ranking
Participants
  • Autor: M. de los Angeles Navacerrada Saturio (UPM)
  • Autor: Julian Cesar Diaz Sanchidrian (UPM)
  • Autor: Antonio Pedrero Gonzalez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Acústica Arquitectónica
  • Departamento: Ingeniería Audiovisual y Comunicaciones
  • Departamento: Física e Instalaciones Aplicadas a la Edificación, al Medio Ambiente y al Urbanismo
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)