Author Topic: NoiseMap 5.2.10 released 29 October 2018  (Read 1094 times)


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NoiseMap 5.2.10 released 29 October 2018
« on: April 03, 2019, 03:03:11 PM »
NoiseMap 5.2.10 was released in October 2018 and contains a number of major improvements.

ISO9613-2 Barrier Calculation
The headline feature in this release is a new ISO9613-2 barrier calculation option.  This option is part of the SiteNoise Calculation module, which is based on BS5228 with enhancements.

This adds to the existing barrier calculation options in the SiteNoise module, so now you can choose from:
• ISO9613-2 barrier calculation
• BS5228 simple barrier calculations,
• BS5228 octave band spectrum barrier calculations,
• CRTN barrier calculations.

The ISO calculation requires octave band noise source data, as the attenuation is evaluated for each octave. The ISO procedure has a ‘meteorological correction’ which has the effect of reducing the path difference used to calculate the barrier attenuation.  This correction is used to take into account the scattering of sound into the barrier’s shadow zone, caused by atmospheric turbulence under downwind propagation. This means that the barrier attenuation will be less than calculated by some other procedures.

Many new scripting options have been added – allowing you to import and export Categories and Combinations, and to export full analysis of calculation details for receiver points.

[The intermediate versions between 5.2.6 and 5.2.10 were not public releases.]