Peiman

I've come across vbapan~ from CICM for Vector Base Amplitude Panning. Now I almost understand how it works but the help-file is not made for a maths dummy like me.

For instance: there is a 5th parameter that defines the central radius. What is this exactly? Is it the distance between the listener and the loudspeakers? If so how does this differ from the loudspeaker positions defined in terms of cartesian coordinates (in the sub-patch change_loudspeakers_disposition), which also defines a vertical distance for each loudspeaker from the center (or am I mistaken here?). Also is cartesian coordinate between 0. and 1. only?

Also the 8 virtual loudspeakers are positioned by default as:

However when I enter the values -0.382684 0.923880 for source disposition the amplitude output of speaker one is at .7, not the highest it has been. If the source is positioned in the same place as speaker 1 then shouldn't the output amplitude of speaker one be at 1? For some reason I get the amplitude 1 when the source is placed: -0.27 0.65.

I would really appreciate any explanation please.

I've come across vbapan~ from CICM for Vector Base Amplitude Panning. Now I almost understand how it works but the help-file is not made for a maths dummy like me. 

Info Vbapan~: 
   coordonnées cartésiennes en contrôle,
   rayon du disque cental = 0.700000,
   temps d'interpolation  = 30 ms,
   nombre d'haut-parleurs = 8,
   position des haut-parleurs:
      hp n°1: -0.382684.x + 0.923880.y,
      hp n°2: 0.382683.x + 0.923880.y,
      hp n°3: 0.923880.x + 0.382683.y,
      hp n°4: 0.923880.x + -0.382683.y,
      hp n°5: 0.382684.x + -0.923879.y,
      hp n°6: -0.382684.x + -0.923879.y,
      hp n°7: -0.923880.x + -0.382683.y,
      hp n°8: -0.923880.x + 0.382683.y.

However when I enter the values -0.382684 0.923880 for source disposition the amplitude output of speaker one is at .7, not the highest it has been. If the source is positioned in the same place as speaker 1 then shouldn't the output amplitude of speaker one be at 1? For some reason I get the amplitude 1 when the source is placed: -0.27 0.65.   

vbapan~ in more detail