EarQuiz Frequencies is a software for ear training on equalization. Its goal is to help musicians, audio professionals, hobbyists and students learn how to hear frequency bands. Available for Windows 10, 11 (x64), macOS 11 or higher (both for Intel and Apple Silicon) and Linux.
This application is based on (and deeply inspired by) the world-renowned Golden Ears method of David Moulton, whose course is half dedicated to building this essential critical listening skill.
The overall training process involves ongoing learning and testing yourself. In the Learn mode, you listen to the pink noise or music (or other external audio) excerpts with switched off and on 1-octave or 1/3-octave graphic EQ, boosting or cutting frequency bands within certain spectral ranges. Then in the Test mode you are given a sequence of 10 similar examples, where you try to guess, which frequencies are boosted or cut, and you get scored.
The program is Free Software, distributed under GNU GPL v3 License.