Kinda a strange question, but I put a sound recorder in one of the offices of a building I work at over night. Now I’ve picked up few sounds, but sure there is more on it just can not hear it that well. So what would be best way to clean audio up so I can hear it better. Thanks. P.S I’ve already turned volume up 
Probably not. If you can’t make out the sounds in the original sound track, there isn’t much we can do to help.
Forum postings that use the words “help me clean up” are usually doomed.
This is one of the reasons Audacity can’t be used for law enforcement, surveillance or conflict resolution.
Koz