What can you do to fix audio? When you are trying to fix audio you can adjust the db level that is being heard by the listener. This means that if something is too loud you can lower the db and if something is too quiet you can raise the db. What cannot be fixed? Things that cannot be fixed include the audio recording because the only thing that can be adjusted is the overall db level for the audio track. What is the optimal level for sound recording? When recording sound it is best to record as close to 0.0 db as possible because that allows for the most adjustment later on while the recording still retains clarity with minimal static.