Eli5:Why do different string notes on a guitar register as a new note

Question

Like an A chord is the strings E A and C#, why do our brains recognize that as a whole note instead of 6 different ones. Or is it just a harmony and we’re so used to hearing them?

In: 1

Answer 1

You can hear all of the individual notes when you play a chord. In fact, each note plays a role in determining the sound of the chord. You personally may not be aware that you are hearing each note, but I assure you you are.