What Is Mix Depth? How to Create Front-Back Space:

A sense of dimension is a key characteristic that separates professional mixes from amateur ones. Most engineers think of dimension in three ways: height, width, and depth. Height is frequency content and width is the stereo field. Depth is the front-to-back space in a mix and is a tricker area to navigate than the previous two.

Whereas some aspects of music production are driven by emotion or technical prowess, principles of depth draw on “real world” phenomena that deal with how sound moves through a space. In this article, we’ll look at how to add depth to a mix with practical tips related to EQ, timbre, reverb, and more.