Freq Quiz
Score
Streak
Accuracy
Round
×1.0
Gain
Direction
Both
Boost Only
Cut Only
Answer band
19
A/B filtered ↔ dry
SpaceD
Pause
P
Restart
F
Seek
Skip track
↑ Boost
Press Play to start
Correct!
Monitor
Spectrum Analyzer ±15 dB · 1/1-oct bands
◀ Low · 20 Hz20 kHz · High ▶
Source
Pink
One-Shots
Loops
Upload Folder
Active Bands
Recent

Where to start

Press Play to hear a short clip with a single frequency boosted or cut. Your job is to identify which frequency was affected by clicking one of the buttons in the grid. Start with Boost Only and ±12 dB (Easy) — large boosts are much easier to hear while you're building your ear.

As your accuracy improves, reduce the gain step by step (±9 dB → ±6 dB → ±4 dB) to train for subtler differences. Enabling Both directions adds the additional challenge of identifying whether the frequency was boosted or cut.


What to listen for

Each frequency region has a distinct character. A boost at low frequencies adds weight and rumble; in the mids it adds body or honkiness; in the highs it adds brightness or edge. Focus on that character and match it to the frequency cards in the grid.

Use Pink Noise as your starting source — it's spectrally flat, so nothing musical distracts you from the EQ change. Once you're scoring well on pink noise, switch to Loops or One-shots to practice on real music.

The Space/D keys toggle between the filtered and dry signal so you can hear the difference directly.


Frequency reference

Sub-Bass 20 – 60 Hz The deepest rumble — felt in the body more than heard. Controls the "oomph" of kick drums and sub-bass. Too much causes a mix to sound muddy or undefined.
Bass 60 – 250 Hz Provides the fundamental rhythm and power of a song. Houses the primary body of bass guitars and drum shells. Build-up here often makes a track sound bloated.
Low-Midrange 250 – 500 Hz Adds warmth and foundation to instruments and vocals. Boosts add "thickness" to a sound; cuts are often used to reduce boxiness.
Midrange 500 Hz – 2 kHz The most sensitive range for human hearing. Contains the fundamental notes of most melodic instruments and vocals. Too much here sounds "honky" or causes masking.
Upper-Midrange 2 – 4 kHz Defines the attack and punch of instruments. Adjusting here helps vocals, guitars, and snares cut through a busy mix.
Presence 4 – 6 kHz Dictates the clarity and definition of a sound. Boosting here makes elements feel closer and more upfront to the listener.
Brilliance / Air 6 – 20 kHz Provides "sparkle," "sheen," and "air." Controls the crispness of cymbals, acoustic guitar strings, and vocal breath. Over-boosting quickly leads to harshness or listener fatigue.