EQ Best Practices in Audio Mixing
If you are applying EQ in audio mixing, then as a beginner you should know these best practices. Take note that this applies to any genre whether it will be rock, pop, country or even classical. Try these EQ best practices in your mix, it will drastically improve the quality of your mix and make you become a better audio mixing engineer. If you are a beginner, this is a must-read article.
Never cut or boost more than 12dB
While it will not hurt to cut or boost 12dB, one of the best practices is to minimize EQ reduction and boosting as possible. It is because it will:
a.) Introduce more audible artifacts due to some extreme boosting/cutting. This can be phase related issues or errors related to digital summing/calculations made by your DAW or plugin.
Also this will tend to worsen if you are using a combination of bad EQ plug-in, poor quality DAW (digital audio workstation) and bad recorded sound.
b.) Introduce more problems in maintaining a good level. Cutting or boosting can introduce drastic changes in volume level. An EQ boost can increase the volume of the track while an EQ cut can decrease volume. These big changes in volume can take a lot of time to balance in the mix.
c.) Can either make your mix to sound too thin, too much bass or too much mid-range presence; which is usually not good if you want a more balanced mix.
What you will do if you really need to cut and boost more than 12dB?
1.) Listen to the track very carefully. Was it badly recorded? Sometimes a bad recording can introduce serious tonal problems. These are caused by a lot of factors, for example:
a.) Recording or tracking in an environment that does not have flat EQ response. Supposing you want a more mid-range sounding acoustic guitar but you are placing the guitar amplifier cabinet facing towards the corner of the room. Since corners can naturally boost the bass levels, you can hardly get that mid-range sounding guitar in the recording.
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