AFMG Network Forum

plus or minus · Member

Is shadowing a dangerous thing to include in EASE. I only ask because it appears that this effect assumes infinite shadowing (attenuation) which wouldn't actually happen. Can somebody alert me to the formula used for this. For example, the shadowing effect seems to infinitely attenuate sound onto areas even at low frequencies. Can the model not implement a simple diffraction calculation so that direct sound still made it to shadowed areas "somewhat" attenuated (as opposed to being infinitely attenuated).

If there is a setting for this, please let me know. Otherwise, it would seem to me that not using this feature gives more realistic results than using it.

Jim Mobley · Member

Shadowing is typically used in projects with overhanging balconies or other large structures that block the direct sound from some of the loudspeakers. Assuming that loudspeakers above an overhang provide direct sound coverage below it is more "dangerous" than the assumption that shadowing is total.

Diffraction is not a simple calculation, work is ongoing on adding diffraction to future versions of EASE as computer horsepower increases.