The accuracy of numerical provisions of the sound propagation outdoors made with the newly developed pyramid tracing algorithm, was tested using a directive loudspeaker as the sound source. The pyramid tracing code was compared against experimental measurements and with the ISO-DIS 9613 standards. Both the experimental and numerical data were used to build graphical plots, enabling a direct comparison of the results: they show that the capability of accurately modeling the source directivity produces generally a better estimate using the pyramid tracing algorithm, but the shielding effects and excess attenuation are more accurately modeled by the ISO 9613 code.
Validation of the pyramid tracing algorithm for sound propagation outdoors: Comparison with experimental measurements and with the ISO-DIS 9613 standards / Farina, A.. - In: ADVANCES IN ENGINEERING SOFTWARE. - ISSN 0965-9978. - 31:4(2000), pp. 241-250. [10.1016/S0965-9978(99)00053-8]
Validation of the pyramid tracing algorithm for sound propagation outdoors: Comparison with experimental measurements and with the ISO-DIS 9613 standards
Farina A.
Investigation
2000-01-01
Abstract
The accuracy of numerical provisions of the sound propagation outdoors made with the newly developed pyramid tracing algorithm, was tested using a directive loudspeaker as the sound source. The pyramid tracing code was compared against experimental measurements and with the ISO-DIS 9613 standards. Both the experimental and numerical data were used to build graphical plots, enabling a direct comparison of the results: they show that the capability of accurately modeling the source directivity produces generally a better estimate using the pyramid tracing algorithm, but the shielding effects and excess attenuation are more accurately modeled by the ISO 9613 code.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
