High Quality Content by WIKIPEDIA articles! Audio restoration is a generalized term for the process of removing imperfections (such as hiss, crackle, noise, and buzz) from sound recordings. Audio restoration can be performed directly on the recording medium (for example, washing a gramophone record with a cleansing solution), or on a digital representation of the recording using a computer (such as a AIFF or WAV file). Record restoration is a particular form of audio restoration that seeks to repair the sound of damaged records.