Eli5:When one speaker is playing two (or more) frequencies of sound, think harmony in music) the resulting sine wave is an average of those two frequencies. How does the brain interpret it as two different notes when one speaker is playing the average of two frequencies?

Question

Eli5:When one speaker is playing two (or more) frequencies of sound, think harmony in music) the resulting sine wave is an average of those two frequencies. How does the brain interpret it as two different notes when one speaker is playing the average of two frequencies?

In: 11

Answer 1

It is a sum of all the frequencies, not an average, which are not necessarily sine waves by the way.