What is the meaning of Barbs noises?

[gta-maloy]]

Up till now I had been playing with the sound off, so I had not heard that before. I suspect it is queue to the Cry expiring. I have not been able to figure out how to tell when one cry expires.
Also it is not clear which cries negate which ones.
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your cries will stack, you will get a red ring at your feet for shout, this means your defense is boosted. You get a blue ring for Battle Orders, this means your life/mana/stamina is boosted. You get a yellow ring for Battle Command, this means you skills are upped by one. When the corresponding ring disapears, that effect goes with it until you re-cast. There are no warnings about the time it lasts. Your cries will stack, none of them negate the other.

These sounds may be your character being hit by monsters, they often let out a little "ugh" or similar.