This is not the standard noise in every gear but 4th. 

It is very loud in all gears and gets louder with speed.  It even makes the noise backing up.  The noise goes away when you depress the clutch no matter how fast you're moving.


I do know the throwout bearing is bad since it makes noise when idleing with clutch disengaged.  Could that be all that's wrong or is it probably another bearing in the tranny?

 Forgot to add that the noise is noticably quieter (but still present) when you lift your foot off the gas pedal even if the clutch pedal is not depressed.