Perfect Pitch: Why Do People Lose It?

Statistically, only 1 in 10,000 people have Perfect Pitch hearing to begin with. For the other 9,999, the "echoic memory" only lasts 4 seconds....

Auditory sensory memory is known as echoic memory. In contrast to iconic memories, which decay very rapidly, echoic memories can last as long as four seconds (Cowan, Lichty, & Grove, 1990).

Better switch out those cables quick enough to really hear the difference :) How Bad Is Your Auditory (Echoic) Memory? - AcousticsInsider.com - YouTube
 
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