What's your EQ IQ?
What is Equalisation?Equalisation (or EQ) is the boosting or cutting of specific frequencies to enhance or improve an audio signal. Home hi fi systems have basic EQ options to add or take away bass, middle and treble. Generally people just turn them up in the belief that more is better.
It is a huge step forward when you realise that taking frequencies away (subtractive EQ) before adding others (additive EQ) can improve your mix greatly.
To begin with it's hard to pinpoint where in the frequency spectrum you should be EQ-ing a sound, so I've made some graphics that should help.
These are negative attributes so would require subtractive EQ in these frequency ranges.
- As adding EQ also adds noise, it is best to first take away any unpleasant frequencies before boosting the pleasant ones.
- If you are struggling to find exactly what to boost or cut in your signal but know it needs EQ-ing, try the sweep method I mentioned above. Make a parametric boost and sweep around until it sounds worse, and then cut that frequency out.
- Use the charts above to pinpoint the frequencies you need to cut or boost.