What do mastering engineers do?

Answer 1

A mastering engineer is responsible for the last step of the artistic process and the first step in the manufacturing process of audio discs. Mastering engineers were originally the engineers who transferred master mix recordings to the wax masters used for vinyl production. With the advent of CDs as the most common audio medium, mastering engineers became responsible for creating the final version of the CD that is submitted to the plant for manufacturing. In addition to the technical aspects of creating the final 'part' or pre-master, a mastering engineer is also expected to make final adjustments that combine the tracks into a cohesive whole. These changes are done in the realm of equalization, compression, and limiting, as well as occasional effects such as stereo enhancement or reverberation. Mastering engineers also provide fade ins and fade outs, where appropriate, as well as set the final spacing between tracks. Mastering engineers rely on specialized, high-end equipment and speakers. They often work in acoustically designed rooms and focus exclusively on mastering. Mastering engineers provide a new set of ears to the project and are expected to correct any mistakes that may have slipped through the mixing process. As with people, mastering engineers can differ on their approach and philosophy with respect to the craft and duties. Some engineers insist on imparting their own sonic finger print on a work, while others believe they are to be as transparent as possible. For additional information on this topic, please refer to the book by Bob Katz, 'MASTERING AUDIO: THE ART AND THE SCIENCE' available from Focal Press in the U.S.