Question

Is the word noise countable?

Answer 1

Both.

Explanation:

Just keep in mind if you are a non native one, in English many nouns are uncountable nouns that could be countable nouns to other languages.
Common are advice, permission,work,knowlege etc are uncountable nouns in English that might not be in other languages.

However,few nouns in English are both too based on context.
Noise if it is a specific thing, it is a countable noun or in a general situation it is an uncountable noun.

Bone, agreement,space, war, light,cloth,silence,thought,paper,success etc are like that.