Uncertainties caused by source directivity in room-acoustic investigations
Fecha
2008Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1121/1.2838252
Resumen
Although deviations in the measurement of acoustic parameters should be lower than the subjectively perceivable change in the corresponding parameter measured, this study reflects that directionality of sound sources could cause wide audience areas to break away from this criterion at high frequencies, even when using dodecahedron loudspeakers which meet the requirements of the ISO 3382 standard. ...
[++]
Although deviations in the measurement of acoustic parameters should be lower than the subjectively perceivable change in the corresponding parameter measured, this study reflects that directionality of sound sources could cause wide audience areas to break away from this criterion at high frequencies, even when using dodecahedron loudspeakers which meet the requirements of the ISO 3382 standard. The directivity of four different acoustic sources was measured and the influence of its accurate orientation spatially quantified in five enclosures for speech and music. By means of simulation software, the number of receivers affected by uncertainties greater than difference limens was established. [--]
Materias
Room-acoustic,
Acoustic parameters
Editor
Acoustical Society of America (ASA)
Publicado en
The Journal of the Acoustical Society of America, 123, EL133 (2008)
Departamento
Universidad Pública de Navarra. Departamento de Física /
Nafarroako Unibertsitate Publikoa. Fisika Saila