Question Hum/Hiss when audio playing but silent, only audible in a build - not in editor

That includes both in play mode or previewing the asset.

It's only an issue for a couple of our clips, but it's quite apparent in them as when there's silence in the narration you can hear a very obvious background hiss that you can't hear when playing the clip on a PC. Has anyone come across a quick solution for this? I assume it's something to do with the compression when building, but I've played around with the import settings quite a bit to no avail