Hello, my name is Matt. I record, edit, and mix music for a living. My profession requires an extremely discerning ear. This little listening test is to see if you can pick up subtle differences in volume.
What I have below is a series of 1khz sine waves, in sets of two. In each test I’d like you to try to discern which tone is the quieter of the two. The first test contains one tone that is 0.8 decibels quieter than the other. I believe this to be the quietest incremental difference of volume the average person can readily discern (evidence suggests 1 decibel to represent this volume difference, but I give the ear a bit more cred).
The following sets of sine waves contain even smaller differences in volume.
Please answer honestly, and try not to guess.
You should also try the MP3 Sound Quality Test