One's overwhelmed by the noise and exhausted (4,2)
I believe the answer is:
done in
'exhausted' is the definition.
(I've seen this before)
'one's overwhelmed by the noise and' is the wordplay.
'overwhelmed by' indicates putting letters inside (inserted letters get absorbed or overwhelmed).
'the noise' becomes 'di' (I can't explain this - if you can you should give a lot more credence to this answer).
'and' becomes 'n' (common abbreviation for 'and').
'one' going inside 'di' is 'donei'.
'donei'+'n'='DONE IN'
Can you help me to learn more?
(Other definitions for done in that I've seen before include "Spent" , "lacking strength" , "Wasted" , "physically exhausted" , "very tired" .)