Efficiently Using the Frequency Spectrum

It’s fairly obvious that the most important sound in the mix should have the highest level, but there are other methods for blending without increasing loudness. Most sounds occupy a particular frequency range, so if you mix sounds in different ranges, you can still maintain clarity without too much level adjustment. Too many sounds in the same range can create cacophony.

You can use equalizers to shape sound, making “holes” in the used frequency spectrum in which you can then place other sounds. For example, if you are trying to make dialogue in the 1-3 kHz range more audible over existing background sound, you could try filtering the background sound to reduce the 1-3 kHz range instead of reducing the level of the entire track. Equalization allows you to reduce the level of sounds only at selected frequencies, making the mix clearer in that part of the spectrum.