This article originally appeared on the Splice blog.
Mastering is the final step in the recording process. It often involves making fine frequency adjustments using equalization, enhancing the stereo image to add a heightened sense of dimension, and carefully using compression to normalize amplitude levels. Mastering is capable of allowing your track to reach its full potential by sculpting it into something that's warm, shimmering, wide, focused, loud, and clear – all at the same time. Mastering engineers also perform arguably less creative but nonetheless vital tasks such as noise removal, arranging album tracks in to their final sequence, and embedding metadata such as ISRC codes so that tracks are fully prepared for commercial duplication and distribution.