This blog has been edited from its original format; some references have been changed to reflect Ozone 7.
There are many reasons to want to achieve a full, wide sounding mix. A mix that is perceivably fuller and wider will sound “better” to the listener. Creating a mix that sounds more present but with a more sonically interesting texture can add interest to the different sections of a song or enhance the arrangement of a track.
A wide sounding mix can be achieved through a variety of panning and stereo imaging techniques, including one secret weapon of the accomplished Engineer: Mid/Side processing. Mid/Side is a highly effective way of making adjustments to the spacialization of a mix or master.
The Mid channel is the center of a stereo image. When the Mid channel is boosted, the listener perceives a more centered (mono) sound to the audio.
The Side channel is the edges of a stereo image. When the Side channel is boosted, the listener perceives a more spacious (wider) sound to the audio.
Tonal or dynamic adjustments, such as Equalization (EQ), Dynamics, Reverb, etc., are traditionally done in mono or stereo. Any processing that is applied would affect the entire mono / stereo signal of the audio track, as seen below.