Change Water Absorption coefficient G to 0

[pierromond]

Discussed in #575

^{Originally posted by fil123 April 24, 2023}
Hi,

• G : the acoustic absorption of a ground (FLOAT between 0 : very hard and 1 : very soft), according to END scheme, infact "he END scheme [55], is similar to IS09613-2 [1] in that it allows for frequency-dependent ground effect over non-flat ground by defining equivalent heights (see Section 12.10) and using a dimensionless frequency-independent coefficient, ground factor, G, with values between 0 (acoustically hard) and 1 (acoustically soft) according to the type of ground [55]". I noticed importing OSM maps that G related to water basins have an assigned G equal to 1. (https://www.openstreetmap.org/export#map=18/39.22652/9.20618).

The color Blue is water, based on your classification G could be 0. I hope that in calculation you use (1-G).
Can you clarify this point please?
I hope hearing from you soon.
Best regards.
Filippo Locci