Modules function

[Shintylla]

Hi,
might somebody deeply explain what this modules are for(with some real application example) and how to use 'em?
here's the list:

DBAP distance 2D
quadratic distance 3d/2d
FDN Reverb

thanks

[senso]

DBAP, Quadratic distance can be used to create personal surround panners to calculate the distance between a source and a speaker and therefor to calculate the volume.
FDN reverb is just a prototype and is not officially supported.