Loud noise heard from Tony (5)
I believe the answer is:
blare
'loud noise' is the definition.
'blare' can be an answer for 'noise' (blare is a kind of noise). I am unsure of the 'loud' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for blare that I've seen before include "Strident sound" , "Sound loud and harsh" , "Sound loudly" , "Roar" , "Loud harsh noise" .)