EDUCATION

EQ curve, visualized in real time

Boosting and cutting the same frequency by the same amount do not sound like opposites. See the curve move as you shape it, and hear why cutting is usually the safer first move.

This is a free online EQ visualizer: move a band and watch the curve change while the sound changes with it. It exists because an EQ in your DAW hides the consequence of what you just did behind a number, and the fastest way to learn equalisation is to connect the shape on screen to what your ears report a second later.

Try it

Boost a mid frequency (around 1kHz) by 6dB, then cut the same frequency by 6dB. Compare.
Sweep a narrow boosted band slowly across the spectrum to find a harsh resonance.
Once found, switch to cut and notch it out instead.

What to listen for

The boost sounds louder and can feel like an improvement even when it isn't. The cut at the same frequency and amount often sounds cleaner, not just quieter, because it removes rather than adds.

Questions

Why is cutting usually safer than boosting?

A boost adds energy and eats headroom, and it flatters whatever is already there, problems included. A cut removes what is in the way and leaves room for everything else. Reach for a cut first, and boost only when nothing is competing.

What does Q actually change?

How wide the affected area is around the frequency you picked. Narrow Q is a scalpel for one resonance; wide Q is a tone shape you will hear as character rather than as a fix.

Which frequencies make a mix sound muddy?

Most of the time between 200 and 500 Hz, where the body of almost every instrument overlaps. A gentle cut there on the parts that are not the focus opens a mix more than any boost in the top end.

Will this match the EQ in my DAW?

The concepts transfer exactly: frequency, gain, Q and filter type mean the same thing everywhere. The exact curve of a given plugin differs, which is why learning to hear the move matters more than memorising a plugin.

This tool is one part of the picture. Electronic Music Production for Beginners covers the rest.