Uhmmm, I may not be the smartest cookie out there, but what exactly is a fourth or fifth voicing? Did I miss a class on that??
I think Diverse may be referring to the interval between each note as a 4th or a 5th away. For example:
Cmin7 C G B or A Eb Bb or Eb Bb F
The distance from C to G is a fifth (although, I'm not quite sure how his theory works going from the G to the B in this chord)
The distance from A to Eb is a flat 5th; while the distance from Eb to Bb is a 5th
The same distance of a 5th is seen going from Eb to Bb and from Bb to F
Anyway, I think that's what he's talking about. Either way, I'm still confused on its application.