| Popis: |
CADNAA, SOUNDPLAN, and TNM are three industry‐standard software programs used for road traffic noise modeling. These programs allow for the calculation and mapping of predicted sound levels over selected areas or at specific locations from a user‐generated model comprised of sound sources and physical elements such as roads, buildings, etc., that define the environment. CADNAA and SOUNDPLAN also allow the user to select the standard defining the method of calculation. While many studies have been conducted to validate each of the three programs against specific test data, little research is available to compare the three together against a common set of test results. This study compares calculated sound levels in CADNAA 3.7, SOUNDPLAN 7.0, and TNM 2.5 against actual traffic noise levels acquired at nine locations across three sites, each site offering a different level of complexity in terms of modeling the environment. Models were kept highly similar in all three programs and calculation methods used bot... |
