Examples of audio restoration tools
Editing
Editing is a powerful tool for audio restoration. For example, eliminating coughs or speech coming from the audience at the end of a movement in a classical recording.
De-clicking
Removal of clicks/pops introduced accidentally during the recording, editing, or mixing processes.
Noise removal
Removal or reduction of noise from fans, air conditioning, and other background sources.
Defects from bad recording environments
Reduction of audio defects arising from tracks recorded in rooms with poor acoustic properties, such as nodes, reverb, etc.
Clip reversal
Removal of clipping distortion from tracks recorded too loudly.