Cryptic crossword clue
As noise all around here, opt for a change in sound 12

The most common and most likely answer to this crossword clue is the 12 letter word STEREOPHONIC

I've seen this crossword clue in The Times
S
T
E
R
E
O
P
H
O
N
I
C

Buddy explains!

The straight part
We know that "sound" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sound = stereophonic.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does STEREOPHONIC mean?

STEREOPHONIC adjective
  1. Of or pertaining to sound reproduction using two channels to give a more natural two-dimensional sound distribution

Latest crossword clues with full explanations