Noise-suppression device connected to organs (8)
I believe the answer is:
earmuffs
'connected to organs' is the definition.
I know nothing about this answer so I can't judge whether this works.
'noise-suppression device' is the wordplay.
I cannot quite see how this works, but
'device' could be 'arm' (arm is a kind of device) and 'arm' is present in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for earmuffs that I've seen before include "Lug protectors" , "They protect the hearing organs from the cold" , "Warmers over the side of the head" , "They keep parts of the head warm" .)