Blind testing a 0.5dB Level Difference

Change the target here:  6dB  3dB  1dB  0.5dB  0.2dB  0.1dB 

Purpose

A 3 dB tolerance is a common figure in frequency response specifications. Some professional systems go beyond by one or two decibels. In some eccentric cases, fractions of a decibel are quoted. This test helps you determine the smallest difference in levels you can detect.

Files being tested

     
0.5dB Up 0.5dB Down Flat
The first one plays back a 440 Hz sine tone characterized by a sudden increase in level occurring after 1 second (0.5 dB in this case). The second file introduces a decrease in level by the same amount. The third one is flat.

The Test

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

                     
 0.5dB Up  
 0.5dB Down  
 Flat  

If you didn't pass this test with a score equal to 9 or higher, you possibly reached the limit of your hearing.

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