need help with transmission noise

[Sammy's Auto LLC]

hi
i have an 02 explorer xlt 2wd 4.0

i have a transmission noise directly proportional with engine speed. it starts as a wooshing noise around 2000 rmp and it sounds like a supercharger whine around 4000 rpm. gear or road speed does not effect it. i have already replaced the pump and converter. it can be heard the loudest from the band adjustment studs with a stehoscope. is there a bearing in there that alwase spins proportional with engine rpm?
thanks for your time

regards sam

 

[Sammy's Auto LLC]

are there bearings in the center support assembly? do they alwase spin?

 

[toy720]

There is an encased bearing on the center support shaft but do not think it spins with rpm? Also sounds like it could be the pump whine?