Loud, harsh (8)
I believe the answer is:
strident
I believe this is a double definition.
'loud' is the first definition.
(strident can mean harsh-sounding or loud)
'harsh' is the second definition.
(I've seen this in another clue)
(Other definitions for strident that I've seen before include "Harsh, grating" , "Loudly assertive" , "harsh sound" , "Commanding attention" , "Roaring" .)