Mid/side EQ

FM's guide to mastering: Separate the stereo and learn this fantastic EQ technique Future MusicMay 03, 2013, 10:34 UTC Using a Mid/Side EQ can be very useful in the mastering process. Basically it splits a stereo signal into 'Mid' and 'Side' channels. Now, the Mid is all the mono information, that is to say everything which is identical in the left and right speaker, and the Side channel is the opposite: It contains any information which is different between the left and the right speaker. You will find that bass and drums often reside in the Mid channel whereas wider elements, such as stereo reverb and pannedelements, will be found occupying the sides. It's incredibly useful sometimes to have a listen to this split signal on a stereo song as it gives you an opportunity to get a glimpse 'under the hood'. Maybe there is some strange resonance that is problematic only in the Mid channel that you can get rid of with a surgical EQ with a narrow Q cut Using mid/side EQ