Switch to : Full Octaves (easier)
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 will help you to discriminate frequencies across the audible range. By training your ears to recognize those frequency bands, you will acquire the ability to locate unwanted frequency bumps by ear and find the correct EQ fix in one go.
|40 Hz||63 Hz||100 Hz||160 Hz||250 Hz|
|400 Hz||630 Hz||1 kHz||1.6 kHz||2.5 kHz|
|4 kHz||6.3 kHz||10 kHz||16 kHz|
The audible spectrum has been divided into 14 bands (2/3 octave spacing), from 40 Hz to 16 kHz. Listen to each octave and try to associate it with its respective center frequency.
|40 Hz 63 Hz 100 Hz 160 Hz 250 Hz 400 Hz 630 Hz 1 kHz 1.6 kHz 2.5 kHz 4 kHz 6.3 kHz 10 kHz 16 kHz|
|Listen to [?] then vote — multiple guesses not allowed (your vote triggers a new draw)|
To pass a blind test, you will need to perform 10 trials at least, obtain a high score and reach a high confidence level: 95% is standard to rate statistical significance. It means that your score outperforms random guesses by 95%. There is still a probability that you just got lucky though, 5%. To reduce such probability to 1%, keep testing until you reached a confidence level of 99%.
Once you have succeeded in getting a score of 100% without listening to the individual labeled files during the test, your training will be complete!
Let's have a test on a real music signal now...
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