Ponencias en congresos:
Qualitative behaviour of L1 and L2 standard deviation in insulations measurements according to standard UNE EN ISO 140-4
Qualitative behaviour of L1 and L2 standard deviation in insulations measurements according to standard UNE EN ISO 140-4
Año:2011
Áreas de investigación
-
Ingeniería civil y arquitectura
Datos
|
Descripción
|
|
|---|---|
| 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 UNE EN ISO 140-4 the uncertainty of the final magnitude is mainly associated to the average sound pressure levels L1 and L2 measured. A parameter that allows us to quantify the spatial variation of the sound pressure level is the standard deviation of the pressure levels measured at different points of the room. In this work, for a wide number of measurements following standards UNE EN ISO 140-4 we analyzed qualitatively the behaviour of the standard deviation for L1 and L2. 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. In general, we observe that the L1 and L2 standard deviations contain peaks and dips independent on characteristics of the rooms at single frequencies that could correspond to critical frequencies of walls, floors and windows or even to temporal alterations of the sound field. Also, in most measurements according to UNE EN ISO 140-4 a large similitude between L1 and L2 standard deviation is found. We believe that such result points to a coupled system between source and receiving rooms, mainly at low frequencies the shape of the L1 and L2 standard deviations is comparable to the velocity level standard deviation on a wall. | |
|
Internacional
|
Si |
|
Nombre congreso
|
Forum Acusticum 2011 |
|
Tipo de participación
|
960 |
|
Lugar del congreso
|
Aalborg - Dinamarca |
|
Revisores
|
Si |
|
ISBN o ISSN
|
978-84-694-1520-7 |
|
DOI
|
|
|
Fecha inicio congreso
|
26/06/2011 |
|
Fecha fin congreso
|
01/07/2011 |
|
Desde la página
|
2605 |
|
Hasta la página
|
2610 |
|
Título de las actas
|
Proceedings |
Ver publicación en Archivo digital upm
Participantes
- Autor: M. de los Angeles Navacerrada Saturio (UPM)
- Autor: Julian Cesar Diaz Sanchidrian (UPM)
- Autor: Antonio Pedrero Gonzalez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Grupo de Investigación: Acústica Arquitectónica
- Departamento: Ingeniería Audiovisual y Comunicaciones
S2i 2023 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)