ADVENTITIOUS Sounds:

Coarse Crackle (rales):

Discontinuous, interrupted, explosive sounds, <20msec, loud, low-pitched, early inspiration or expiration (in COLD).

Fine Crackles:

They are the same as the coarse crackles but less laud and of shorter duration, higher in pitch. Mid to late inspiration. They are not altered by a cough, more prominent in the bases.
Velcro rales (in decreased ventilation).