OOZ662 is right, deadband is not that difficult of a concept. It is the amount of movement where no input is accepted. Increasing deadband increases the amount the stick has to be moved from center for an input to get a response.
The best way to understand dampening and deadband are to experience them. That is easiest to do offline or in the TA. Take your favorite plane up, bring up the clipboard and mouse click to,
Setup->Controls->Joystick->Settings
where you have access to all the roll, pitch, rudder, etc controls while flying! For example, change the pitch deadband, click ok, close the clipboard and see the effect! The dampening can be adjusted in the same way!
When you get the settings the way you like, do a screen save for each axis using the alt-s key sequence. The images will be stored in the AH2 directory "Drive:/Program Files/HTC/Aces High II", using a bmp format.
Adjusting dampening and deadband by trial and error is the only way I know to eliminate nose bounce. YMMV.
Regards,
Malta