Crossword Genius

Acoustic foam reduces it (4)

Ross

I believe the answer is:

echo

(Other definitions for echo that I've seen before include "Reverberate - nymph spurned by Narcissus" , "Reflection of sound - Greek nymph" , "Evocation" , "Reminder" , "Comms code word for E" .)

I've seen this clue in the USA Today.
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