The most common and most likely answer to this crossword clue is the 5 letter word NOISE
I've seen this crossword clue in The Sunday Telegraph
N
O
I
S
E
More clues leading to the result NOISE
- Top seed's English racket
- Loud shouting from one imprisoned by beak?
- Sound coming from piano is extraordinary
- Sound of hooter around one
- One is blown, producing sound
- What one carrying hooter around makes?
- One is unusually sound
- Buzz, as first of insects enters hooter
- Detective's skill, containing one racket
- Perhaps Smash Hits magazine's last report?
Buddy explains!
The straight part
We know that "That’s what we hear" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case that’s what we hear = noise.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 NOISE mean?
NOISE noun- Various sounds, usually unwanted or unpleasant.
- Sound or signal generated by random fluctuations.
- Unwanted part of a signal.
- (by extension) Unwanted fuss or bustle; useless activity.
- The measured level of variation in gene expression among cells, regardless of source, within a supposedly identical population.
- Rumour or complaint.
- Music, in general; a concert; also, a company of musicians; a band.
- A genre of rock music that uses static and other non-musical sounds, also influenced by art rock.
- To make a noise; to sound.
- To spread news of; to spread as rumor or gossip.