Made a sharp noise, talking in a trance (4)
I believe the answer is:
rapt
'in a trance' is the definition.
(I've seen this in another clue)
'made a sharp noise talking' is the wordplay.
'made a sharp noise' becomes 'rapped' (rap can mean to make a knocking noise).
'talking' indicates a 'sounds like' (homophone) clue.
'rapped' sounds like 'RAPT'.
(Other definitions for rapt that I've seen before include "Part of being intent and absorbed" , "Enraptured, entranced" , "Spellbound in part" , "Fully engaged" , "Part (anag.)" .)