Mastering

src: fanumusic.com

Mastering may refer to

• Audio mastering, the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device, the master
• Bus mastering, a feature supported by many data bus architectures that enables a device connected to the bus to initiate transactions
• Stem mastering, contains the same process as ordinary mastering but the individual audio tracks are grouped together into a few separated stems like DRUMS, INSTRUMENTS, VOICES etc. This provides the maximum control over the whole mastering process and also brings the better results at the final mastering.

Source of article : Wikipedia