AudioCheck

Sound Tests & Test Tones Tests your Audio Equipment, Room Acoustics and Hearing, online

Online Tone Generators High-quality audio signal generators, .wav file output

Blind Audio Tests Critical listening tests. Training Files for Sound Engineers

Earplug Reviews Protect your hearing. Pick the right plug!

F.A.Q. Frequently asked questions.

Discriminative Frequency Training - Full Octave Notches

Switch to : 2/3 Octaves  (difficult)

Purpose

Equalization (EQ) refers to the process of altering the frequency response of an audio system or a sound file. EQ can be used for esthetic reasons or to compensate for unwanted bumps or holes in the audio spectrum.

The following files help you discriminating missing frequencies across the audible range. By training your ears to recognize those missing frequency bands, you will acquire the ability to locate unwanted frequency dips by ear and find the correct EQ fix in one go.

Training Files

Listen to each file and associate the missing octave band with the value of its center frequency.

wav ↓	wav ↓	wav ↓	wav ↓	wav ↓
31.5Hz	63Hz	125Hz	250Hz	500Hz
wav ↓	wav ↓	wav ↓	wav ↓	wav ↓
1kHz	2kHz	4kHz	8kHz	16kHz

Test Files

For each column, tick the appropriate radio button. When the 10 files have all been labeled, click the "Submit" button to get your score. Reload the page as often as you want to perform new tests.

31.5Hz
63Hz
125Hz
250Hz
500Hz
1kHz
2kHz
4kHz
8kHz
16kHz

Once you have succeeded in getting 9 or higher without listening to the individual labeled files during the test, your training will have been successfully completed.

Let's have a test on a real music signal now...

External Links

• Equalization by the Octave
• Equalization @ Wikipedia