Normalize

This command applies to the current selection or, if nothing is selected, to the entire file. Normalizing a recording will raise its amplitude such that the loudest part of the selection will use the largest possible value of the current file format. This can be used to raise the volume of very quiet recordings. It can also be useful to normalize recordings before sharing them with others to ensure a consistent volume across multiple files.

However, normalization cannot substitute a good recording that was made with a properly adjusted microphone. Normalizing is similar to increasing the brightness of a photograph that is too dark: no new information is added, the available information just becomes slightly easier to see or hear.

Also, since normalization uses the loudest part of a selection as a reference, loud noises in the recording will prevent successful normalization. Hence if loud noises are present, it may be necessary to delete them before normalization.